- mbed-tls - lists.trustedfirmware.org

"packets lost" in DTLS in "Record" layer

by saghili

Hello, I have a question about DTLS. Because of the latency, I need to disable the "packets lost" feature. Does MbedTLS provide the flag that we can disable resending the packet in case of the packet lost? For instance, if I have 3 packets 42, 43, and 44, is it possible to decrypt packet 44 without receiving packets 42 and 43? It will be in the "Record" layer. Thank you. Best regards, Farhad

5 years, 8 months

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Re: [mbed-tls] mbedtls undefined behaviour

by Сысоев Андрей

Thank you for quick response. > Are you using blocking or non-blocking I/O? Non-blocking IO I've preset bio_send/recv callbacks I have pair of buffers, transport buffer and application buffer, for reading and writing (4 buffers total). Application buffers are protected by mutexes. Transport buffers are written/read in bio_send/recv (if no async op pending, otherwise WANT_READ/WRITE). mbedtls_ssl_xxx work with application buffers. > Are you using TLS or DTLS? What protocol version, what cipher suite and what extensions are negotiated? TLS (over tcp, no lossy channel involved) version 1.2 > Does your application call mbedtls_ssl_write() and mbedtls_ssl_read() again with the same buffer if they return MBEDTLS_ERR_SSL_WANT_READ or MBEDTLS_ERR_SSL_WANT_WRITE? Well, actually, no. AND it's quite possible, that application outgoing buffer (std::vector) has been relocated between mbedtls_ssl_write calls, because app could push data several times while async op was pending and bio_send returned WANT_WRITE, causing these buffers to resize. So buf.data() will not be equal to that from previous mbedtls_ssl_write call. Is this what causes trouble? It's somehow connected to partial sends? I do call ssl_write inside while-loop, counting sent and unsent bytes - thought this was enough. But if mbedtls somehow remembers addresses from previos calls - that might cause problems. > Do you close the TLS connection if mbedtls_ssl_xxx() returns an error other than WANT_XXX (or XXX_IN_PROGRESS if you use these features)? Yes, but that never happens (from handshake to until problem appears) > What is the value of MBEDTLS_SSL_MAX_CONTENT_LEN (or MBEDTLS_SSL_OUT_CONTENT_LEN if it's defined)? Not defined in config, looks like both 16834 >What operating system are you using? Ubuntu 20, Kali 20 > Is this a client or a server? What TLS stack does the other side run? Both are written same way, both using same library. I'll try to prepare test-case code, that reproduces the problem, and logs, but that will require some time. 10.12.2020 1:07, Gilles Peskine via mbed-tls пишет: > Hi Андрей, > > The behavior you describe is a bug. But there isn't enough information > to tell whether the bug is in Mbed TLS, in asio-standalone, in some > other third-party code, or in your application. > > Some things to consider: > > * Are you using blocking or non-blocking I/O? > * Are you using TLS or DTLS? What protocol version, what cipher suite > and what extensions are negotiated? > * Does your application call mbedtls_ssl_write() and mbedtls_ssl_read() > again with the same buffer if they return MBEDTLS_ERR_SSL_WANT_READ or > MBEDTLS_ERR_SSL_WANT_WRITE? > * Do you close the TLS connection if mbedtls_ssl_xxx() returns an error > other than WANT_XXX (or XXX_IN_PROGRESS if you use these features)? > * What is the value of MBEDTLS_SSL_MAX_CONTENT_LEN (or > MBEDTLS_SSL_OUT_CONTENT_LEN if it's defined)? > * What operating system are you using? > * Is this a client or a server? What TLS stack does the other side run? > > You'll give others the most chance to help you if you post small, > complete code to reproduce the problem. I realize this may be difficult. > A good intermediate way to see what is going on would be to post debug > logs. To get debug logs, make sure that MBEDTLS_DEBUG_C is enabled and > call these functions before opening the TLS connection: > > mbedtls_ssl_conf_dbg(&ssl_conf, my_debug, stdout); > mbedtls_debug_set_threshold(2); > > See https://tls.mbed.org/kb/how-to/mbedtls-tutorial for a sample version > of my_debug(). > > Calls to bio_send() are shown in the logs as > > => flush output > message length: %d, out_left: %d > ssl->f_send() returned %d > <= flush output > > If they don't show expected numbers, the rest of the logs should give a > clue as to why. > > Hope this helps, >

5 years, 8 months

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Re: [mbed-tls] mbedtls undefined behaviour

by Gilles Peskine

By the way, I notice you're using Mbed TLS 2.16.3. This version has known bugs, including security issues. Please upgrade to the latest Mbed TLS 2.16.x (currently 2.16.8, very soon 2.16.9) which is a security and bugfix update, or to the latest release (2.24.0, soon 2.25.0) which has all the latest bugfixes and features. Looking at the changelog, I don't see any mention of a bug that could explain your problem, but I might have missed something. -- Gilles Peskine Mbed TLS developer On 09/12/2020 22:17, Сысоев Андрей via mbed-tls wrote: > Hello. > > I need a little help with mbedtls 2.16.3. > I'm using it under x86-64 with asio-standalone. > > Here's a standard situation: > - I call mbedtls_ssl_write() to write let's say 8192 bytes of payload > - it calls my own bio_send() with (8192+21) bytes as len parameter > - bio_send() returns len=(8192+21), indicating transport data > correctly written > - mbedtls_ssl_write() returns 8192, indicating payload send > GOOD: next I use this value to shift application buffer (erase first > 8192 bytes), then send next chunk > > BUT after some time of running this situation happens: > - once again, a call to mbedtls_ssl_write() to write let's say 8192 > bytes of payload > - it calls bio_send() with smaller number, about 5500 bytes as len > parameter (?? but OK) > - bio_send() returns len=5500, indicating transport data correctly > written > - mbedtls_ssl_write() returns 8192 (??? why not 5500 ???), indicating > payload send > BAD: next I use this value to shift application buffer (erase first > 8192 bytes), this leads to data loss of (8192-5500)=2692 bytes and > ruins protocol > > As you can see, mbedtls_ssl_write() incorrectly reports about sent > application data (8192 instead of 5500) - is this a bug? How can such > situation happen under normal operation? > > Thanks in advance. >

5 years, 8 months

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Re: [mbed-tls] mbedtls undefined behaviour

by Gilles Peskine

Hi Андрей, The behavior you describe is a bug. But there isn't enough information to tell whether the bug is in Mbed TLS, in asio-standalone, in some other third-party code, or in your application. Some things to consider: * Are you using blocking or non-blocking I/O? * Are you using TLS or DTLS? What protocol version, what cipher suite and what extensions are negotiated? * Does your application call mbedtls_ssl_write() and mbedtls_ssl_read() again with the same buffer if they return MBEDTLS_ERR_SSL_WANT_READ or MBEDTLS_ERR_SSL_WANT_WRITE? * Do you close the TLS connection if mbedtls_ssl_xxx() returns an error other than WANT_XXX (or XXX_IN_PROGRESS if you use these features)? * What is the value of MBEDTLS_SSL_MAX_CONTENT_LEN (or MBEDTLS_SSL_OUT_CONTENT_LEN if it's defined)? * What operating system are you using? * Is this a client or a server? What TLS stack does the other side run? You'll give others the most chance to help you if you post small, complete code to reproduce the problem. I realize this may be difficult. A good intermediate way to see what is going on would be to post debug logs. To get debug logs, make sure that MBEDTLS_DEBUG_C is enabled and call these functions before opening the TLS connection: mbedtls_ssl_conf_dbg(&ssl_conf, my_debug, stdout); mbedtls_debug_set_threshold(2); See https://tls.mbed.org/kb/how-to/mbedtls-tutorial for a sample version of my_debug(). Calls to bio_send() are shown in the logs as => flush output message length: %d, out_left: %d ssl->f_send() returned %d <= flush output If they don't show expected numbers, the rest of the logs should give a clue as to why. Hope this helps, -- Gilles Peskine Mbed TLS developer On 09/12/2020 22:17, Сысоев Андрей via mbed-tls wrote: > Hello. > > I need a little help with mbedtls 2.16.3. > I'm using it under x86-64 with asio-standalone. > > Here's a standard situation: > - I call mbedtls_ssl_write() to write let's say 8192 bytes of payload > - it calls my own bio_send() with (8192+21) bytes as len parameter > - bio_send() returns len=(8192+21), indicating transport data > correctly written > - mbedtls_ssl_write() returns 8192, indicating payload send > GOOD: next I use this value to shift application buffer (erase first > 8192 bytes), then send next chunk > > BUT after some time of running this situation happens: > - once again, a call to mbedtls_ssl_write() to write let's say 8192 > bytes of payload > - it calls bio_send() with smaller number, about 5500 bytes as len > parameter (?? but OK) > - bio_send() returns len=5500, indicating transport data correctly > written > - mbedtls_ssl_write() returns 8192 (??? why not 5500 ???), indicating > payload send > BAD: next I use this value to shift application buffer (erase first > 8192 bytes), this leads to data loss of (8192-5500)=2692 bytes and > ruins protocol > > As you can see, mbedtls_ssl_write() incorrectly reports about sent > application data (8192 instead of 5500) - is this a bug? How can such > situation happen under normal operation? > > Thanks in advance. >

5 years, 8 months

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mbedtls undefined behaviour

by Сысоев Андрей

Hello. I need a little help with mbedtls 2.16.3. I'm using it under x86-64 with asio-standalone. Here's a standard situation: - I call mbedtls_ssl_write() to write let's say 8192 bytes of payload - it calls my own bio_send() with (8192+21) bytes as len parameter - bio_send() returns len=(8192+21), indicating transport data correctly written - mbedtls_ssl_write() returns 8192, indicating payload send GOOD: next I use this value to shift application buffer (erase first 8192 bytes), then send next chunk BUT after some time of running this situation happens: - once again, a call to mbedtls_ssl_write() to write let's say 8192 bytes of payload - it calls bio_send() with smaller number, about 5500 bytes as len parameter (?? but OK) - bio_send() returns len=5500, indicating transport data correctly written - mbedtls_ssl_write() returns 8192 (??? why not 5500 ???), indicating payload send BAD: next I use this value to shift application buffer (erase first 8192 bytes), this leads to data loss of (8192-5500)=2692 bytes and ruins protocol As you can see, mbedtls_ssl_write() incorrectly reports about sent application data (8192 instead of 5500) - is this a bug? How can such situation happen under normal operation? Thanks in advance.

5 years, 8 months

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Re: [mbed-tls] Implementing MbedTLS on "xilinx zu7 zynq ultrascale+soc"

by Gilles Peskine

Hi Farhad, Mbed TLS currently supports hardware acceleration through alternative implementations of the corresponding modules or functions. See https://tls.mbed.org/kb/development/hw_acc_guidelines . This mechanism is available for symmetric cryptography and partially for RSA and ECC. There is some work in progress on a new mechanism for hardware acceleration through the psa_xxx() API, which will be available for all algorithms. You can follow the work in progress on the “Unified driver interface: API design and prototype” epic at https://github.com/ARMmbed/mbedtls/projects/2#column-8543266 . Hope this helps, -- Gilles Peskine Mbed TLS developer On 04/12/2020 11:20, saghili via mbed-tls wrote: > Dear Sir/Madam, > > Our platform is a quad core Cortex A53 running PetaLinux. > In our hardware, "AF_ALG" module has performance accelerations > available through the Linux crypto drivers. > Is it possible that we have "AF_ALG" for offloading crypto operations? > > Best regards, > Farhad

5 years, 8 months

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Implementing MbedTLS on "xilinx zu7 zynq ultrascale+soc"

by saghili

Dear Sir/Madam, Our platform is a quad core Cortex A53 running PetaLinux. In our hardware, "AF_ALG" module has performance accelerations available through the Linux crypto drivers. Is it possible that we have "AF_ALG" for offloading crypto operations? Best regards, Farhad

5 years, 8 months

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Mbed TLS on ESP32

by Radim Kohout

Hello, I am using ESP32 Dev Module, which supports MbedTLS. I have two questions, but I can't find the answer on the forum: 1.Is there any way to import RSA keys from string(ideally from PEM format) to mbedtls_pk context? 2.How to encrypt with RSA private key and decrypt with RSA public key? Thanks Radim Kohout

5 years, 8 months

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Re: [mbed-tls] Invalid ECDSA signature created

by ROSHINI DEVI

Thanks Gilles. I have use mbedtls_ecdsa_sign and got the raw buffer output of R & S values. On Sun, Nov 22, 2020, 9:26 PM Gilles Peskine via mbed-tls < mbed-tls(a)lists.trustedfirmware.org> wrote: > Hi Roshini, > > Mathematically, an ES256 (ECDSA over the curve P256R1) signature is a > pair of numbers (r,s) between 1 and an upper bound which is very > slightly less than 2^256. There are two common representations for this > signature. JWA uses the “raw” representation: two big-endian numbers > represented each with exactly 32 bytes, concatenated together. > mbedtls_ecdsa_write_signature uses the ASN.1 DER representation, which > as you noticed represents each number in a type+length+value format. > > The DER format removes leading zeros from the number, then adds a > leading 0 bit to each number which is a sign bit (the numbers in an > ECDSA signature are always positive, but DER can also represent negative > numbers). Therefore each number has a roughly 1/2 chance of using 33 > value bytes with a leading 0 byte (1 sign bit + 7 value bits, all 0), a > 63/128 chance of using 32 value bytes, and a 1/128 chance of using 31 > value bytes or less because the 7 most significant bits of the number > were 0. A shorter number in an ECDSA signature is not invalid, it's a > 1/128 chance (independently for each of r and s). > > To get the signature in raw format with Mbed TLS, the easiest way is to > use the PSA API, where the output of psa_sign_hash() for ECDSA is the > raw format. With the classic Mbed TLS API, the easiest way is to call > mbedtls_ecdsa_sign() or mbedtls_ecdsa_sign_det_ext() to get r and s as > bignums, then use mbedtls_mpi_write_binary() to write r and s with their > exact size into the output buffer. You can find an example in the > internal function psa_ecdsa_sign(): > > https://github.com/ARMmbed/mbedtls/blob/mbedtls-2.24.0/library/psa_crypto.c… > > Hope this helps, > > -- > Gilles Peskine > Mbed TLS developer > > On 22/11/2020 10:12, ROSHINI DEVI via mbed-tls wrote: > > Hello all, > > > > I need to sign the message using ES256 algorithm. After doing > > necessary initializations, I called API > > - mbedtls_ecdsa_write_signature() API and it gave me signature in ASN1 > > encoded form and there was no error generated by this API. > > After getting the signature, I need the r & s values to create JWT > > Token. So, I wrote my custom function to parse the signature buffer > > and get the R & S values of it. > > It was working fine. Sometimes, I am getting an invalid signature as > > shown below signature DER buffer - > > > > 30 43 02 1f 31 92 8d 22 10 41 86 25 68 7f 42 81 26 0f 37 bc 7f 38 b7 > > d5 1a 6b 69 31 07 34 11 a6 04 e5 90 02 20 23 26 f8 b9 80 cf 2c 25 c8 > > 04 b4 ac 43 51 6a 04 a6 af 8f 94 36 f8 cf 35 c2 94 cc df de db 92 b2 > > > > The reason for invalid is - > > 1st byte represents ASN1 sequence, followed by length and 3rd byter > > indicates it is an integer. > > Ideally, 4th byte indicates length of r-value, it should have been 32 > > or 33 bytes ( in case of padding with 00 ). You can see in the above > > buffer it is 0x1F ( 31 bytes ). It is really weird how it is possible > > to get the signature length of 31 bytes. > > > > It is blocking me for generation of JWT token, where in RFC 7518 > > - https://tools.ietf.org/html/rfc7518#page-9 , it says R & S must be > > 32 bytes long. And, the generation is failing. > > > > It is of high priority for me. If anyone can provide your suggestions > > on this issue, it would be really great. Thanks in advance > > > > Thanks, > > Roshini > > > > > -- > mbed-tls mailing list > mbed-tls(a)lists.trustedfirmware.org > https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls >

5 years, 8 months

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-0x7180 - SSL - Verification of the message MAC failed

by Михаил Азанов

The SSL server is the one from the examples https://github.com/ARMmbed/mbedtls/blob/development/programs/ssl/ssl_server… It is configured on port 8080. The server runs on the linux operating system Linux commands give the following: uname -a Linux termv7 4.15.0-91-generic #92-Ubuntu SMP Fri Feb 28 11:09:48 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux On the client side, the sim800 module is used. Log files attached to the email. File contents TermV-terminals-server.key: subject=/C=RU/ST=Sample/L=Sample/O=Sample/OU=Sample/CN=localhost issuer=/C=RU/ST=Sample/L=Sample/O=Sample/OU=Sample/CN=Sample -----BEGIN CERTIFICATE----- MIIDTjCCAjYCFBhhDBE3BeiTMD0dzFYOGILO8yq0MA0GCSqGSIb3DQEBCwUAMGIx CzAJBgNVBAYTAlJVMQ8wDQYDVQQIDAZTYW1wbGUxDzANBgNVBAcMBlNhbXBsZTEP MA0GA1UECgwGU2FtcGxlMQ8wDQYDVQQLDAZTYW1wbGUxDzANBgNVBAMMBlNhbXBs ZTAeFw0yMDAxMTgxODA5MDlaFw0yNDAxMTcxODA5MDlaMGUxCzAJBgNVBAYTAlJV MQ8wDQYDVQQIDAZTYW1wbGUxDzANBgNVBAcMBlNhbXBsZTEPMA0GA1UECgwGU2Ft cGxlMQ8wDQYDVQQLDAZTYW1wbGUxEjAQBgNVBAMMCWxvY2FsaG9zdDCCASIwDQYJ KoZIhvcNAQEBBQADggEPADCCAQoCggEBALQSjObDf16fv02qH+3FtI4eX2tPfj+u XsSF8KK6OpcNNfHv17LB9NRUGbZdeikvL5mjB1qd8Qt5YBzSYvvNmuQqn/ZZhEhg 9zqDd+j6dsl03OSW42qSP59M22plqhHZv1ZpkbpHSnEbbwbIVhgx1GuJvMHbQKxw et3UobG9M7q0/6Z2hlvbiuQgZWpc6+vnGGFUzVFjJhsUMgewU1UwTtfahOVegv9v ocuj+AOHzzH2+l72ybpKIFKZ6eXjr3sVp1lIPXm+gUNLqkReNV2QVk4H/j2ow3xu hdHjiPQ+6o6dgbCHeCvbf7Qs35S8YlQH/Mn2bik2NIMKucdq7S35AEsCAwEAATAN BgkqhkiG9w0BAQsFAAOCAQEAhANjStGtYfPJ2Ibkbn6ct4bWLPe6sFBvbwYow3Fd lBz0oxBukhJDOrPa4OqJDpnWenXkEcUrulI2JG5sIylOg3QlwlmgPoJU9fkpmr+u xNVlTxBSh1BVp0sccC+LxNRyDMl4C89R1TjPpPjoRU4cciY9N0oygPjTj0c26qBU iqwtyJTeeJYJUdplCMvXFOt8deqi/NBpBGnEfo8P/IeM/iCWLD5VtloHX/R0C+au q6803qd1/Gd0pIdsELQKrR6mBz6sWukg2f25GheLQVV7Wz/elZD8MwYwjYLoCtIP 65Ae3Eb6S2KlsVPzMj09u6kQ+KPfZtKu8tiUSc+11hurRw== -----END CERTIFICATE----- File contents TermV-terminals-server.crt: -----BEGIN PRIVATE KEY----- MIIEvwIBADANBgkqhkiG9w0BAQEFAASCBKkwggSlAgEAAoIBAQC0Eozmw39en79N qh/txbSOHl9rT34/rl7EhfCiujqXDTXx79eywfTUVBm2XXopLy+ZowdanfELeWAc 0mL7zZrkKp/2WYRIYPc6g3fo+nbJdNzkluNqkj+fTNtqZaoR2b9WaZG6R0pxG28G yFYYMdRribzB20CscHrd1KGxvTO6tP+mdoZb24rkIGVqXOvr5xhhVM1RYyYbFDIH sFNVME7X2oTlXoL/b6HLo/gDh88x9vpe9sm6SiBSmenl4697FadZSD15voFDS6pE XjVdkFZOB/49qMN8boXR44j0PuqOnYGwh3gr23+0LN+UvGJUB/zJ9m4pNjSDCrnH au0t+QBLAgMBAAECggEBAKWbKdpQkSME53sVqqeR26uYY0jdos4OHzm9tMDzZE7m 52XJniXYGsHrVnpRHbginTQ+qtS7zKMwzSO0mTPas0iDqvl0+iNWighWQEETl4tO 3peb7Spltf1bQa9oMDCagU2HaW5Xgi7jfAhQ1l0J9sGvutjOO3xbNaQtmUdNKfXa VRaof94/YKcbTPIn588orxfumgeiYwQ8exhA7yg1WLl2iSy9jj+8WrxaKvy4vR45 nXrb2tXletRoZZY/FC/NZNMgXsGTmYHl6blTEZVz7Zu0XPHKJo42tHnKHW46/ccJ vkXQNjUsu0JN95+lWBA5Yne8xddhiLNKv3DZ3iwXRAECgYEA17YaIbtlgSLd5hJJ OuS9n9XNUCEx1YLhDRzhHggPNTZkVxSnxnWVGpbubtWN/OggRtJyk+mLFV+aHLCa R224ofSPWWE1HtoSdtLcL5oLgp6RDoM61h1p1glFS7BpbYzBegAcbMJa1IvAMspx 5lsYowBUJLNHAEcqUrXzQ88gu2ECgYEA1bRugqLGXqz1E0z6o/MuGXfmJaGQEmJg 833As5jzsyd6pyznsB0TKUAJkcf0RmZrr1EDVigA9aLcwq4qThjGEL2FpGkOvXPC bY0c2pLnsZJetNmXnky/w+W127V+LbDjjQaYl/7c9Fp4hoomoykt7d1YW7lRZ2Le wo8muiGF5ysCgYEAlYHahMysop926tJ7vPzzTMfT4JjRQGnQ79S3VqhBWiFT1GM1 kcDHUkGQCnOrUMHWNSABV/FDe9HiL8Zbd+xdTqsBe/J67eI5b+/fuoJrPeIHKebc rbB/PWD5jWc8+zfWlWdkTCE88RnXYZyc6wryfW9p4nH7YP7yH5eKftIdnqECgYBl aWY33/661uDF8/XM742k0F0K5oxz7PONGNPlZmPfVJDD3G9mB6YcISNpZrXo4pmf bJZkwD8UUeDpEbVJsj/rmcRdrO0twk01p41Vu/jvL0J6F/f3SvyFffC6/nmOPS7+ sW6gUnWQD466abzEGLqO8kcH3/1dTnHfagc6tMXSWQKBgQCZjWzyLtEUxvWI2PSe B6/osxlYDyCkXrJDIT1LuepM/54Kre9YMUy2UZBVC42DR6paEbkAAqHdTsLNlKhV s+6/JGnEDR1e/L7ks0dBY8jow04r0mKG1M91SMLr5OeBTk6SRMnR7GAKewjeLmJD ULgsqyHSTh/4r6tDQ7Gayci2vQ== -----END PRIVATE KEY----- Server sources: #include <stdio.h> /* * SSL server demonstration program * * Copyright The Mbed TLS Contributors * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #if !defined(MBEDTLS_CONFIG_FILE) #include "mbedtls/config.h" #else #include MBEDTLS_CONFIG_FILE #endif #if defined(MBEDTLS_PLATFORM_C) #include "mbedtls/platform.h" #else #include <stdio.h> #include <stdlib.h> #define mbedtls_time time #define mbedtls_time_t time_t #define mbedtls_fprintf fprintf #define mbedtls_printf printf #define mbedtls_exit exit #define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS #define MBEDTLS_EXIT_FAILURE EXIT_FAILURE #endif #if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_CERTS_C) || \ !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_SSL_TLS_C) || \ !defined(MBEDTLS_SSL_SRV_C) || !defined(MBEDTLS_NET_C) || \ !defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_CTR_DRBG_C) || \ !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_FS_IO) || \ !defined(MBEDTLS_PEM_PARSE_C) int main( void ) { mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_CERTS_C and/or MBEDTLS_ENTROPY_C " "and/or MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_SRV_C and/or " "MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or " "MBEDTLS_CTR_DRBG_C and/or MBEDTLS_X509_CRT_PARSE_C " "and/or MBEDTLS_PEM_PARSE_C not defined.\n"); mbedtls_exit( 0 ); } #else #include <stdlib.h> #include <string.h> #if defined(_WIN32) #include <windows.h> #endif #include "mbedtls/entropy.h" #include "mbedtls/ctr_drbg.h" #include "mbedtls/certs.h" #include "mbedtls/x509.h" #include "mbedtls/ssl.h" #include "mbedtls/net_sockets.h" #include "mbedtls/error.h" #include "mbedtls/debug.h" #if defined(MBEDTLS_SSL_CACHE_C) #include "mbedtls/ssl_cache.h" #endif #define HTTP_RESPONSE \ "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \ "<h2>mbed TLS Test Server</h2>\r\n" \ "<p>Successful connection using: %s</p>\r\n" #define DEBUG_LEVEL 5 static void my_debug( void *ctx, int level, const char *file, int line, const char *str ) { ((void) level); mbedtls_fprintf( (FILE *) ctx, "%s:%04d: %s", file, line, str ); fflush( (FILE *) ctx ); } int main( void ) { int ret, len; mbedtls_net_context listen_fd, client_fd; unsigned char buf[1024]; const char *pers = "ssl_server"; mbedtls_entropy_context entropy; mbedtls_ctr_drbg_context ctr_drbg; mbedtls_ssl_context ssl; mbedtls_ssl_config conf; mbedtls_x509_crt srvcert; mbedtls_pk_context pkey; #if defined(MBEDTLS_SSL_CACHE_C) mbedtls_ssl_cache_context cache; #endif mbedtls_net_init( &listen_fd ); mbedtls_net_init( &client_fd ); mbedtls_ssl_init( &ssl ); mbedtls_ssl_config_init( &conf ); #if defined(MBEDTLS_SSL_CACHE_C) mbedtls_ssl_cache_init( &cache ); #endif mbedtls_x509_crt_init( &srvcert ); mbedtls_pk_init( &pkey ); mbedtls_entropy_init( &entropy ); mbedtls_ctr_drbg_init( &ctr_drbg ); #if defined(MBEDTLS_DEBUG_C) mbedtls_debug_set_threshold( DEBUG_LEVEL ); #endif /* * 1. Load the certificates and private RSA key */ mbedtls_printf( "\n . Loading the server cert. and key..." ); fflush( stdout ); /* * This demonstration program uses embedded test certificates. * Instead, you may want to use mbedtls_x509_crt_parse_file() to read the * server and CA certificates, as well as mbedtls_pk_parse_keyfile(). */ ret = mbedtls_x509_crt_parse_file( &srvcert,"/etc/minpay/cert/TermV-terminals-server.crt"); if( ret != 0 ) { mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned %d\n\n", ret ); goto exit; } ret = mbedtls_pk_parse_keyfile( &pkey,"/etc/minpay/cert/TermV-terminals-server.key", NULL ); if( ret != 0 ) { mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned %d\n\n", ret ); goto exit; } mbedtls_printf( " ok\n" ); /* * 2. Setup the listening TCP socket */ mbedtls_printf( " . Bind on https://localhost:8080/ ..." ); fflush( stdout ); if( ( ret = mbedtls_net_bind( &listen_fd, NULL, "8080", MBEDTLS_NET_PROTO_TCP ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_net_bind returned %d\n\n", ret ); goto exit; } mbedtls_printf( " ok\n" ); /* * 3. Seed the RNG */ mbedtls_printf( " . Seeding the random number generator..." ); fflush( stdout ); if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy, (const unsigned char *) pers, strlen( pers ) ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d\n", ret ); goto exit; } mbedtls_printf( " ok\n" ); /* * 4. Setup stuff */ mbedtls_printf( " . Setting up the SSL data...." ); fflush( stdout ); if( ( ret = mbedtls_ssl_config_defaults( &conf, MBEDTLS_SSL_IS_SERVER, MBEDTLS_SSL_TRANSPORT_STREAM, MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_config_defaults returned %d\n\n", ret ); goto exit; } mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg ); mbedtls_ssl_conf_dbg( &conf, my_debug, stdout ); #if defined(MBEDTLS_SSL_CACHE_C) mbedtls_ssl_conf_session_cache( &conf, &cache, mbedtls_ssl_cache_get, mbedtls_ssl_cache_set ); #endif mbedtls_ssl_conf_ca_chain( &conf, srvcert.next, NULL ); if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret ); goto exit; } if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_setup returned %d\n\n", ret ); goto exit; } mbedtls_printf( " ok\n" ); reset: #ifdef MBEDTLS_ERROR_C if( ret != 0 ) { char error_buf[100]; mbedtls_strerror( ret, error_buf, 100 ); mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf ); } #endif mbedtls_net_free( &client_fd ); mbedtls_ssl_session_reset( &ssl ); /* * 3. Wait until a client connects */ mbedtls_printf( " . Waiting for a remote connection ..." ); fflush( stdout ); if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd, NULL, 0, NULL ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_net_accept returned %d\n\n", ret ); goto exit; } mbedtls_ssl_set_bio( &ssl, &client_fd, mbedtls_net_send, mbedtls_net_recv, NULL ); mbedtls_printf( " ok\n" ); /* * 5. Handshake */ mbedtls_printf( " . Performing the SSL/TLS handshake..." ); fflush( stdout ); while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 ) { if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) { mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned %d\n\n", ret ); goto reset; } } mbedtls_printf( " ok\n" ); /* * 6. Read the HTTP Request */ mbedtls_printf( " < Read from client:" ); fflush( stdout ); do { len = sizeof( buf ) - 1; memset( buf, 0, sizeof( buf ) ); ret = mbedtls_ssl_read( &ssl, buf, len ); if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE ) continue; if( ret <= 0 ) { switch( ret ) { case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY: mbedtls_printf( " connection was closed gracefully\n" ); break; case MBEDTLS_ERR_NET_CONN_RESET: mbedtls_printf( " connection was reset by peer\n" ); break; default: mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n", (unsigned int) -ret ); break; } break; } len = ret; mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf ); if( ret > 0 ) break; } while( 1 ); /* * 7. Write the 200 Response */ mbedtls_printf( " > Write to client:" ); fflush( stdout ); len = sprintf( (char *) buf, HTTP_RESPONSE, mbedtls_ssl_get_ciphersuite( &ssl ) ); while( ( ret = mbedtls_ssl_write( &ssl, buf, len ) ) <= 0 ) { if( ret == MBEDTLS_ERR_NET_CONN_RESET ) { mbedtls_printf( " failed\n ! peer closed the connection\n\n" ); goto reset; } if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) { mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret ); goto exit; } } len = ret; mbedtls_printf( " %d bytes written\n\n%s\n", len, (char *) buf ); mbedtls_printf( " . Closing the connection..." ); while( ( ret = mbedtls_ssl_close_notify( &ssl ) ) < 0 ) { if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) { mbedtls_printf( " failed\n ! mbedtls_ssl_close_notify returned %d\n\n", ret ); goto reset; } } mbedtls_printf( " ok\n" ); ret = 0; goto reset; exit: #ifdef MBEDTLS_ERROR_C if( ret != 0 ) { char error_buf[100]; mbedtls_strerror( ret, error_buf, 100 ); mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf ); } #endif mbedtls_net_free( &client_fd ); mbedtls_net_free( &listen_fd ); mbedtls_x509_crt_free( &srvcert ); mbedtls_pk_free( &pkey ); mbedtls_ssl_free( &ssl ); mbedtls_ssl_config_free( &conf ); #if defined(MBEDTLS_SSL_CACHE_C) mbedtls_ssl_cache_free( &cache ); #endif mbedtls_ctr_drbg_free( &ctr_drbg ); mbedtls_entropy_free( &entropy ); #if defined(_WIN32) mbedtls_printf( " Press Enter to exit this program.\n" ); fflush( stdout ); getchar(); #endif mbedtls_exit( ret ); } #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_CERTS_C && MBEDTLS_ENTROPY_C && MBEDTLS_SSL_TLS_C && MBEDTLS_SSL_SRV_C && MBEDTLS_NET_C && MBEDTLS_RSA_C && MBEDTLS_CTR_DRBG_C && MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_FS_IO && MBEDTLS_PEM_PARSE_C */ Regards, Michael.

5 years, 8 months

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Re: [mbed-tls] -0x7180 - SSL - Verification of the message MAC failed

by Manuel Pegourie-Gonnard

Hi Michael, I'm not sure I understand what library/program you're using on each side: you posted the source code of a server based on Mbed TLS, and an invocation of openssl as a server - 2 servers and no client, surely that's not your entire setup. Also, even with the full details, this is a considerable amount of things to go over, so instead of trying to pinpoint the issue, I'd like to suggest a strategy that would help you debug things. For the side of the connection that's based on Mbed TLS, I suggest you start with one of the example programs located in programs/ssl? in our source tree. Hopefully those should work. If they don't, please come back to us with details on how you're invoking them and what's on the other side. If they work, I suggest you gradually modify them to adapt them to your needs, and after each change check if things still work. That way, if things break at one point, it should be easier to pinpoint the source of the issue. Hope that will help! Regards, Manuel. PS: I had a quick look at the logs, and I'm not sure what software is on the client side, but its ClientHello.random doesn't look random. Also, the location of the errors suggests the the client and server didn't compute the same session keys - so something probably went wrong computing the pre-master secret or deriving the master secret and session keys from it. ________________________________ From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of Михаил Азанов via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> Sent: 21 November 2020 05:17 To: mbed-tls(a)lists.trustedfirmware.org <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] -0x7180 - SSL - Verification of the message MAC failed Clients connect to my server over SSL and an error "-0x7180 - SSL - Verification of the message MAC failed" occurs when creating a secure connection. Linux commands give the following: uname -a Linux termv7 4.15.0-91-generic #92-Ubuntu SMP Fri Feb 28 11:09:48 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux openssl s_server -key /etc/minpay/cert/TermV-terminals-server.key -cert /etc/minpay/cert/TermV-terminals-server.crt -accept 8080 -state Using default temp DH parameters ACCEPT SSL_accept:before SSL initialization SSL_accept:before SSL initialization SSL_accept:SSLv3/TLS read client hello SSL_accept:SSLv3/TLS write server hello SSL_accept:SSLv3/TLS write certificate SSL_accept:SSLv3/TLS write server done SSL_accept:SSLv3/TLS write server done SSL_accept:SSLv3/TLS read client key exchange SSL_accept:SSLv3/TLS read change cipher spec SSL_accept:SSLv3/TLS read finished SSL_accept:SSLv3/TLS write change cipher spec SSL_accept:SSLv3/TLS write finished -----BEGIN SSL SESSION PARAMETERS----- MHUCAQECAgMBBAIALwQgNbcRsh26hMujwXcoa5ZlBGihMY+GFhkTscR4Ds8fppwE MHAJs/h2ldK+C7Sm2fpNGbzYMycfUPGq4Ydg9PtnHPt1Mn9eH68tnQsT2nuTwGRq zqEGAgRftlMXogQCAhwgpAYEBAEAAAA= -----END SSL SESSION PARAMETERS----- Shared ciphers:AES128-SHA --- No server certificate CA names sent CIPHER is AES128-SHA Secure Renegotiation IS NOT supported Source content: File contents TermV-terminals-server.key: subject=/C=RU/ST=Sample/L=Sample/O=Sample/OU=Sample/CN=localhost issuer=/C=RU/ST=Sample/L=Sample/O=Sample/OU=Sample/CN=Sample -----BEGIN CERTIFICATE----- MIIDTjCCAjYCFBhhDBE3BeiTMD0dzFYOGILO8yq0MA0GCSqGSIb3DQEBCwUAMGIx CzAJBgNVBAYTAlJVMQ8wDQYDVQQIDAZTYW1wbGUxDzANBgNVBAcMBlNhbXBsZTEP MA0GA1UECgwGU2FtcGxlMQ8wDQYDVQQLDAZTYW1wbGUxDzANBgNVBAMMBlNhbXBs ZTAeFw0yMDAxMTgxODA5MDlaFw0yNDAxMTcxODA5MDlaMGUxCzAJBgNVBAYTAlJV MQ8wDQYDVQQIDAZTYW1wbGUxDzANBgNVBAcMBlNhbXBsZTEPMA0GA1UECgwGU2Ft cGxlMQ8wDQYDVQQLDAZTYW1wbGUxEjAQBgNVBAMMCWxvY2FsaG9zdDCCASIwDQYJ KoZIhvcNAQEBBQADggEPADCCAQoCggEBALQSjObDf16fv02qH+3FtI4eX2tPfj+u XsSF8KK6OpcNNfHv17LB9NRUGbZdeikvL5mjB1qd8Qt5YBzSYvvNmuQqn/ZZhEhg 9zqDd+j6dsl03OSW42qSP59M22plqhHZv1ZpkbpHSnEbbwbIVhgx1GuJvMHbQKxw et3UobG9M7q0/6Z2hlvbiuQgZWpc6+vnGGFUzVFjJhsUMgewU1UwTtfahOVegv9v ocuj+AOHzzH2+l72ybpKIFKZ6eXjr3sVp1lIPXm+gUNLqkReNV2QVk4H/j2ow3xu hdHjiPQ+6o6dgbCHeCvbf7Qs35S8YlQH/Mn2bik2NIMKucdq7S35AEsCAwEAATAN BgkqhkiG9w0BAQsFAAOCAQEAhANjStGtYfPJ2Ibkbn6ct4bWLPe6sFBvbwYow3Fd lBz0oxBukhJDOrPa4OqJDpnWenXkEcUrulI2JG5sIylOg3QlwlmgPoJU9fkpmr+u xNVlTxBSh1BVp0sccC+LxNRyDMl4C89R1TjPpPjoRU4cciY9N0oygPjTj0c26qBU iqwtyJTeeJYJUdplCMvXFOt8deqi/NBpBGnEfo8P/IeM/iCWLD5VtloHX/R0C+au q6803qd1/Gd0pIdsELQKrR6mBz6sWukg2f25GheLQVV7Wz/elZD8MwYwjYLoCtIP 65Ae3Eb6S2KlsVPzMj09u6kQ+KPfZtKu8tiUSc+11hurRw== -----END CERTIFICATE----- File contents TermV-terminals-server.crt: -----BEGIN PRIVATE KEY----- MIIEvwIBADANBgkqhkiG9w0BAQEFAASCBKkwggSlAgEAAoIBAQC0Eozmw39en79N qh/txbSOHl9rT34/rl7EhfCiujqXDTXx79eywfTUVBm2XXopLy+ZowdanfELeWAc 0mL7zZrkKp/2WYRIYPc6g3fo+nbJdNzkluNqkj+fTNtqZaoR2b9WaZG6R0pxG28G yFYYMdRribzB20CscHrd1KGxvTO6tP+mdoZb24rkIGVqXOvr5xhhVM1RYyYbFDIH sFNVME7X2oTlXoL/b6HLo/gDh88x9vpe9sm6SiBSmenl4697FadZSD15voFDS6pE XjVdkFZOB/49qMN8boXR44j0PuqOnYGwh3gr23+0LN+UvGJUB/zJ9m4pNjSDCrnH au0t+QBLAgMBAAECggEBAKWbKdpQkSME53sVqqeR26uYY0jdos4OHzm9tMDzZE7m 52XJniXYGsHrVnpRHbginTQ+qtS7zKMwzSO0mTPas0iDqvl0+iNWighWQEETl4tO 3peb7Spltf1bQa9oMDCagU2HaW5Xgi7jfAhQ1l0J9sGvutjOO3xbNaQtmUdNKfXa VRaof94/YKcbTPIn588orxfumgeiYwQ8exhA7yg1WLl2iSy9jj+8WrxaKvy4vR45 nXrb2tXletRoZZY/FC/NZNMgXsGTmYHl6blTEZVz7Zu0XPHKJo42tHnKHW46/ccJ vkXQNjUsu0JN95+lWBA5Yne8xddhiLNKv3DZ3iwXRAECgYEA17YaIbtlgSLd5hJJ OuS9n9XNUCEx1YLhDRzhHggPNTZkVxSnxnWVGpbubtWN/OggRtJyk+mLFV+aHLCa R224ofSPWWE1HtoSdtLcL5oLgp6RDoM61h1p1glFS7BpbYzBegAcbMJa1IvAMspx 5lsYowBUJLNHAEcqUrXzQ88gu2ECgYEA1bRugqLGXqz1E0z6o/MuGXfmJaGQEmJg 833As5jzsyd6pyznsB0TKUAJkcf0RmZrr1EDVigA9aLcwq4qThjGEL2FpGkOvXPC bY0c2pLnsZJetNmXnky/w+W127V+LbDjjQaYl/7c9Fp4hoomoykt7d1YW7lRZ2Le wo8muiGF5ysCgYEAlYHahMysop926tJ7vPzzTMfT4JjRQGnQ79S3VqhBWiFT1GM1 kcDHUkGQCnOrUMHWNSABV/FDe9HiL8Zbd+xdTqsBe/J67eI5b+/fuoJrPeIHKebc rbB/PWD5jWc8+zfWlWdkTCE88RnXYZyc6wryfW9p4nH7YP7yH5eKftIdnqECgYBl aWY33/661uDF8/XM742k0F0K5oxz7PONGNPlZmPfVJDD3G9mB6YcISNpZrXo4pmf bJZkwD8UUeDpEbVJsj/rmcRdrO0twk01p41Vu/jvL0J6F/f3SvyFffC6/nmOPS7+ sW6gUnWQD466abzEGLqO8kcH3/1dTnHfagc6tMXSWQKBgQCZjWzyLtEUxvWI2PSe B6/osxlYDyCkXrJDIT1LuepM/54Kre9YMUy2UZBVC42DR6paEbkAAqHdTsLNlKhV s+6/JGnEDR1e/L7ks0dBY8jow04r0mKG1M91SMLr5OeBTk6SRMnR7GAKewjeLmJD ULgsqyHSTh/4r6tDQ7Gayci2vQ== -----END PRIVATE KEY----- File contents ssl_server.h: #ifndef SSL_SERVER_H #define SSL_SERVER_H #define DEBUG_LEVEL 5 #if DEBUG_LEVEL > 0 #include "mbedtls/debug.h" #endif //#define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256 #include "mbedtls/entropy.h" #include "mbedtls/ctr_drbg.h" #include "mbedtls/certs.h" #include "mbedtls/x509.h" #include "mbedtls/ssl.h" #include "mbedtls/net_sockets.h" #include "mbedtls/error.h" #include "mbedtls/ssl_cache.h" #include "packet_handler/packet_handler.h" #include "thread_pool_ssl.h" #include "queue_ssl.h" extern pthread_mutex_t listen_fd1_mutex; extern mbedtls_net_context listen_fd1; extern void* runSSLServer(void *arg); #endif // SSL_SERVER_H File contents ssl_server.c: #include "ssl_server.h" mbedtls_net_context listen_fd1; pthread_mutex_t listen_fd1_mutex=PTHREAD_MUTEX_INITIALIZER; static mbedtls_ssl_config *config; #if DEBUG_LEVEL > 0 static void my_debug( void *ctx, int level, const char *file, int line, const char *str ) { ((void) level); char s[1000]; snprintf(s,sizeof(s),"%s:%04d: %s", file, line, str ); trace(s); } #endif void * runSSLServer(void *arg) { (void)(arg); int ret; char s[100]; int n = atoi(config_list[SSL_SERVER_NUM_THREADS].value); createThreadPoolSSLArray(n); mbedtls_net_context listen_fd, client_socket_ssl; const char pers[] = "ssl_pthread_server"; mbedtls_entropy_context entropy; mbedtls_ctr_drbg_context ctr_drbg; mbedtls_ssl_config conf; mbedtls_x509_crt srvcert; mbedtls_x509_crt cachain; mbedtls_pk_context pkey; mbedtls_ssl_cache_context cache; mbedtls_ssl_cache_init( &cache ); mbedtls_x509_crt_init( &srvcert ); mbedtls_x509_crt_init( &cachain ); mbedtls_ssl_config_init( &conf ); mbedtls_ctr_drbg_init( &ctr_drbg ); mbedtls_net_init( &listen_fd ); mbedtls_net_init( &client_socket_ssl ); config = &conf; /* * We use only a single entropy source that is used in all the threads. */ mbedtls_entropy_init( &entropy ); #if DEBUG_LEVEL > 0 mbedtls_debug_set_threshold(DEBUG_LEVEL); #endif /* * 1. Load the certificates and private RSA key */ trace( "[SSL Server] Loading the server cert. and key..." ); ret = mbedtls_x509_crt_parse_file( &srvcert,"/etc/minpay/cert/TermV-terminals-server.crt"); if( ret != 0 ) { snprintf(s,sizeof(s), "[SSL Server] failed\n ! mbedtls_x509_crt_parse_file returned %d\n\n", ret ); trace(s); goto thread_exit; } mbedtls_pk_init( &pkey ); ret = mbedtls_pk_parse_keyfile( &pkey,"/etc/minpay/cert/TermV-terminals-server.key" , NULL ); if( ret != 0 ) { snprintf(s,sizeof(s), "[SSL Server] failed\n ! mbedtls_pk_parse_keyfile returned %d\n\n", ret ); trace(s); goto thread_exit; } trace( "[SSL Server] ok\n" ); /* * 1b. Seed the random number generator */ trace( "Seeding the random number generator..." ); if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy, (const unsigned char *) pers, strlen( pers ) ) ) != 0 ) { snprintf(s,sizeof(s),"[SSL Server] failed: mbedtls_ctr_drbg_seed returned -0x%04x\n", -ret ); trace(s); goto thread_exit; } trace( "[SSL Server] ok\n" ); /* * 1c. Prepare SSL configuration */ trace( "[SSL Server] Setting up the SSL data...." ); if( ( ret = mbedtls_ssl_config_defaults( &conf, MBEDTLS_SSL_IS_SERVER, MBEDTLS_SSL_TRANSPORT_STREAM, MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 ) { snprintf(s,sizeof(s),"[SSL Server] failed: mbedtls_ssl_config_defaults returned -0x%04x\n", -ret ); trace(s); goto thread_exit; } mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg ); #if DEBUG_LEVEL > 0 mbedtls_ssl_conf_dbg( &conf, my_debug, NULL ); #endif /* mbedtls_ssl_cache_get() and mbedtls_ssl_cache_set() are thread-safe if * MBEDTLS_THREADING_C is set. */ mbedtls_ssl_conf_session_cache( &conf, &cache, mbedtls_ssl_cache_get, mbedtls_ssl_cache_set ); mbedtls_ssl_conf_ca_chain( &conf, &cachain, NULL ); if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 ) { snprintf(s,sizeof(s),"[SSL Server] failed\n ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret ); trace(s); goto thread_exit; } trace( "[SSL Server] ok\n" ); /* * 2. Setup the listening TCP socket */ snprintf(s,sizeof(s),"[SSL Server] Bind on localhost: %s ...","8080"); trace(s); fflush( stdout ); if( ( ret = mbedtls_net_bind( &listen_fd, NULL, "8080", MBEDTLS_NET_PROTO_TCP ) ) != 0 ) { snprintf(s,sizeof(s),"[SSL Server] failed\n ! mbedtls_net_bind returned %d\n\n", ret ); trace(s); goto thread_exit; } trace( "[SSL Server] ok\n" ); pthread_mutex_lock(&listen_fd1_mutex); listen_fd1 = listen_fd; pthread_mutex_unlock(&listen_fd1_mutex); while(true) { //reset: if(ret!=0) { char error_buf[100]; mbedtls_strerror( ret, error_buf, 100 ); snprintf(s,sizeof(s),"[SSL Server] Last error was: -0x%04x - %s\n", -ret, error_buf ); trace(s); } /* * 3. Wait until a client connects */ trace( "[SSL Server] Waiting for a remote connection\n" ); int ret =mbedtls_net_accept(&listen_fd,&client_socket_ssl,NULL,0,NULL); if(ret != 0) { snprintf(s,sizeof(s), "[SSL Server] failed: mbedtls_net_accept returned -0x%04x\n", ret); trace(s); break; } trace( "[SSL Server] ok\n" ); //do whatever we do with connections. //put the connection somewhere so that an available thread //can find it. mbedtls_net_context *pclient = malloc(sizeof(mbedtls_net_context)); *pclient = client_socket_ssl; pthread_mutex_lock(&client_socket_ssl_mutex); enqueue_ssl(pclient); pthread_cond_signal(&condition_var_ssl); pthread_mutex_unlock(&client_socket_ssl_mutex); ret = 0; } thread_exit: mbedtls_x509_crt_free( &srvcert ); mbedtls_pk_free( &pkey ); mbedtls_ssl_cache_free( &cache ); mbedtls_ctr_drbg_free( &ctr_drbg ); mbedtls_entropy_free( &entropy ); mbedtls_ssl_config_free( &conf ); mbedtls_net_free( &listen_fd ); deleteThreadPoolSSLArray(); return NULL; } static void *handleConnectionSSL(mbedtls_net_context *p_net_context) { int ret, len; char s[100]; struct packet_handler handler={}; handler.net_context = *p_net_context; free(p_net_context);// we really don't need this anymore unsigned char buf[1024]; /* Make sure memory references are valid */ mbedtls_ssl_init( &handler.ssl ); snprintf(s,sizeof(s),"[SSL client_socket=%d] Setting up SSL/TLS data\n", handler.net_context.fd ); trace(s); /* * 4. Get the SSL context ready */ if( ( ret = mbedtls_ssl_setup( &handler.ssl, config ) ) != 0 ) { snprintf(s,sizeof(s),"[SSL client_socket=%d] failed: mbedtls_ssl_setup returned -0x%04x\n",handler.net_context.fd, -ret ); trace(s); goto thread_exit; } mbedtls_ssl_set_bio( &handler.ssl, (mbedtls_net_context*)&handler.net_context, mbedtls_net_send, mbedtls_net_recv, NULL ); /* * 5. Handshake */ snprintf(s,sizeof(s),"[SSL client_socket=%d] Performing the SSL/TLS handshake\n", handler.net_context.fd); trace(s); while( ( ret = mbedtls_ssl_handshake( &handler.ssl ) ) != 0 ) { if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) { snprintf(s,sizeof(s),"[SSL client_socket=%d] failed: mbedtls_ssl_handshake returned -0x%04x\n", handler.net_context.fd, -ret ); trace(s); goto thread_exit; } } snprintf(s,sizeof(s),"[SSL client_socket=%d] ok\n", handler.net_context.fd ); trace(s); ret = runPacketHandler(&handler); snprintf(s,sizeof(s), "[SSL client_socket=%d] . Closing the connection...", handler.net_context.fd ); trace(s); while( ( ret = mbedtls_ssl_close_notify( &handler.ssl ) ) < 0 ) { if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) { snprintf(s,sizeof(s), "[SSL client_socket=%d] failed: mbedtls_ssl_close_notify returned -0x%04x\n", handler.net_context.fd, ret); trace(s); goto thread_exit; } } trace( " ok\n" ); ret = 0; thread_exit: if( ret != 0 ) { char error_buf[100]; mbedtls_strerror( ret, error_buf, 100 ); snprintf(s,sizeof(s), "[SSL client_socket=%d] Last error was: -0x%04x - %s\n\n", handler.net_context.fd, -ret, error_buf ); trace(s); } mbedtls_net_free((mbedtls_net_context*)&handler.net_context); mbedtls_ssl_free(&handler.ssl); return NULL; } void *threadFunctionSSL(void *arg) { (void)(arg); while(true) { mbedtls_net_context *pclient; pthread_mutex_lock(&client_socket_ssl_mutex); if((pclient=dequeue_ssl())==NULL) { pthread_cond_wait((pthread_cond_t *)&pclient,&client_socket_ssl_mutex); //try again pclient = dequeue_ssl(); } pthread_mutex_unlock(&client_socket_ssl_mutex); if(pclient!=NULL) { //we have a connection handleConnectionSSL(pclient); } } } File contents thread_pool_ssl.h: #ifndef SSL_THREAD_POOL_H #define SSL_THREAD_POOL_H #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <stdbool.h> #include <pthread.h> #include "mbedtls/net_sockets.h" extern pthread_t *thread_pool_ssl; extern pthread_mutex_t client_socket_ssl_mutex; extern pthread_cond_t condition_var_ssl; void createThreadPoolSSLArray(int n); void deleteThreadPoolSSLArray(); extern void *handleSSLConnection(int* p_client_socket); extern void *threadFunctionSSL(void *arg); #endif // SSL_THREAD_POOL_H File contents thread_pool_ssl.c: #include "thread_pool_ssl.h" pthread_t *thread_pool_ssl=NULL; pthread_mutex_t client_socket_ssl_mutex = PTHREAD_MUTEX_INITIALIZER; pthread_cond_t condition_var_ssl = PTHREAD_COND_INITIALIZER; void *threadFunctionSSL(void *arg); void createThreadPoolSSLArray(int n) { thread_pool_ssl = (pthread_t*)malloc(n); //first off create a bunch of threads to handle future connections for(int i=0; i<n;i++) { pthread_create(&thread_pool_ssl[i],NULL,threadFunctionSSL,NULL); } } void deleteThreadPoolSSLArray() { free(thread_pool_ssl); } File contents main.c: #include <stdio.h> #include "log.h" #include "ssl_server.h" #include <signal.h> void catchSigterm(); void catchSigint(); void runPortListening(); int main() { catchSigterm(); catchSigint(); runPortListening(); return 0; } void runPortListening() { trace("Starting port listening..."); pthread_t handleID; pthread_create(&handleID,NULL,runSSLServer,NULL); trace("Port listening started."); pthread_join(handleID,NULL); trace("Port listening complete."); } void closeServer() { trace("Shutdown SSL Server..."); pthread_mutex_lock(&listen_fd1_mutex); mbedtls_net_free(&listen_fd1); pthread_mutex_unlock(&listen_fd1_mutex); } void sigTermHandler(int signum, siginfo_t *info, void *ptr) { (void)signum; (void)info; (void)ptr; closeServer(); } void catchSigterm() { static struct sigaction _sigact; memset(&_sigact, 0, sizeof(_sigact)); _sigact.sa_sigaction = sigTermHandler; _sigact.sa_flags = SA_SIGINFO; sigaction(SIGTERM, &_sigact, NULL); } void sigIntHandler(int signum, siginfo_t *info, void *ptr) { (void)signum; (void)info; (void)ptr; closeServer(); } void catchSigint() { static struct sigaction _sigact; memset(&_sigact, 0, sizeof(_sigact)); _sigact.sa_sigaction = sigIntHandler; _sigact.sa_flags = SA_SIGINFO; sigaction(SIGINT, &_sigact, NULL); } Log files attached to the email. Regards, Michael.

5 years, 8 months

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Re: [mbed-tls] Provide a crypto utility to verify mbedtls quickly

by Sawyer Liu

Hello everyone, Due to the pic link, cannot download the tool. I attach the link again. http://esctech.cn/wp-content/uploads/2020/04/Crypto%20UtilityV2.0.zip Best Regards Sawyer Liu

5 years, 8 months

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Provide a crypto utility to verify mbedtls quickly

by Sawyer Liu

Hello everyone, I found many people need to verify the result of mbedtls, so I can provide a tool to help more people to verify their own code quickly. See http://esctech.cn/wp-content/uploads/2020/04/Crypto%20UtilityV2.0.zip<https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fesctech.cn…>. [cid:image001.jpg@01D6C1C0.7C525360] Best Regards Sawyer Liu

5 years, 8 months

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Re: [mbed-tls] Invalid ECDSA signature created

by Gilles Peskine

Hi Roshini, Mathematically, an ES256 (ECDSA over the curve P256R1) signature is a pair of numbers (r,s) between 1 and an upper bound which is very slightly less than 2^256. There are two common representations for this signature. JWA uses the “raw” representation: two big-endian numbers represented each with exactly 32 bytes, concatenated together. mbedtls_ecdsa_write_signature uses the ASN.1 DER representation, which as you noticed represents each number in a type+length+value format. The DER format removes leading zeros from the number, then adds a leading 0 bit to each number which is a sign bit (the numbers in an ECDSA signature are always positive, but DER can also represent negative numbers). Therefore each number has a roughly 1/2 chance of using 33 value bytes with a leading 0 byte (1 sign bit + 7 value bits, all 0), a 63/128 chance of using 32 value bytes, and a 1/128 chance of using 31 value bytes or less because the 7 most significant bits of the number were 0. A shorter number in an ECDSA signature is not invalid, it's a 1/128 chance (independently for each of r and s). To get the signature in raw format with Mbed TLS, the easiest way is to use the PSA API, where the output of psa_sign_hash() for ECDSA is the raw format. With the classic Mbed TLS API, the easiest way is to call mbedtls_ecdsa_sign() or mbedtls_ecdsa_sign_det_ext() to get r and s as bignums, then use mbedtls_mpi_write_binary() to write r and s with their exact size into the output buffer. You can find an example in the internal function psa_ecdsa_sign(): https://github.com/ARMmbed/mbedtls/blob/mbedtls-2.24.0/library/psa_crypto.c… Hope this helps, -- Gilles Peskine Mbed TLS developer On 22/11/2020 10:12, ROSHINI DEVI via mbed-tls wrote: > Hello all, > > I need to sign the message using ES256 algorithm. After doing > necessary initializations, I called API > - mbedtls_ecdsa_write_signature() API and it gave me signature in ASN1 > encoded form and there was no error generated by this API. > After getting the signature, I need the r & s values to create JWT > Token. So, I wrote my custom function to parse the signature buffer > and get the R & S values of it. > It was working fine. Sometimes, I am getting an invalid signature as > shown below signature DER buffer - > > 30 43 02 1f 31 92 8d 22 10 41 86 25 68 7f 42 81 26 0f 37 bc 7f 38 b7 > d5 1a 6b 69 31 07 34 11 a6 04 e5 90 02 20 23 26 f8 b9 80 cf 2c 25 c8 > 04 b4 ac 43 51 6a 04 a6 af 8f 94 36 f8 cf 35 c2 94 cc df de db 92 b2 > > The reason for invalid is - > 1st byte represents ASN1 sequence, followed by length and 3rd byter > indicates it is an integer. > Ideally, 4th byte indicates length of r-value, it should have been 32 > or 33 bytes ( in case of padding with 00 ). You can see in the above > buffer it is 0x1F ( 31 bytes ). It is really weird how it is possible > to get the signature length of 31 bytes. > > It is blocking me for generation of JWT token, where in RFC 7518 > - https://tools.ietf.org/html/rfc7518#page-9 , it says R & S must be > 32 bytes long. And, the generation is failing. > > It is of high priority for me. If anyone can provide your suggestions > on this issue, it would be really great. Thanks in advance > > Thanks, > Roshini >

5 years, 8 months

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Invalid ECDSA signature created

by ROSHINI DEVI

Hello all, I need to sign the message using ES256 algorithm. After doing necessary initializations, I called API - mbedtls_ecdsa_write_signature() API and it gave me signature in ASN1 encoded form and there was no error generated by this API. After getting the signature, I need the r & s values to create JWT Token. So, I wrote my custom function to parse the signature buffer and get the R & S values of it. It was working fine. Sometimes, I am getting an invalid signature as shown below signature DER buffer - 30 43 02 1f 31 92 8d 22 10 41 86 25 68 7f 42 81 26 0f 37 bc 7f 38 b7 d5 1a 6b 69 31 07 34 11 a6 04 e5 90 02 20 23 26 f8 b9 80 cf 2c 25 c8 04 b4 ac 43 51 6a 04 a6 af 8f 94 36 f8 cf 35 c2 94 cc df de db 92 b2 The reason for invalid is - 1st byte represents ASN1 sequence, followed by length and 3rd byter indicates it is an integer. Ideally, 4th byte indicates length of r-value, it should have been 32 or 33 bytes ( in case of padding with 00 ). You can see in the above buffer it is 0x1F ( 31 bytes ). It is really weird how it is possible to get the signature length of 31 bytes. It is blocking me for generation of JWT token, where in RFC 7518 - https://tools.ietf.org/html/rfc7518#page-9 , it says R & S must be 32 bytes long. And, the generation is failing. It is of high priority for me. If anyone can provide your suggestions on this issue, it would be really great. Thanks in advance Thanks, Roshini

5 years, 8 months

1
0
0 0

-0x7180 - SSL - Verification of the message MAC failed

by Михаил Азанов

Clients connect to my server over SSL and an error "-0x7180 - SSL - Verification of the message MAC failed" occurs when creating a secure connection. Linux commands give the following: uname -a Linux termv7 4.15.0-91-generic #92-Ubuntu SMP Fri Feb 28 11:09:48 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux openssl s_server -key /etc/minpay/cert/TermV-terminals-server.key -cert /etc/minpay/cert/TermV-terminals-server.crt -accept 8080 -state Using default temp DH parameters ACCEPT SSL_accept:before SSL initialization SSL_accept:before SSL initialization SSL_accept:SSLv3/TLS read client hello SSL_accept:SSLv3/TLS write server hello SSL_accept:SSLv3/TLS write certificate SSL_accept:SSLv3/TLS write server done SSL_accept:SSLv3/TLS write server done SSL_accept:SSLv3/TLS read client key exchange SSL_accept:SSLv3/TLS read change cipher spec SSL_accept:SSLv3/TLS read finished SSL_accept:SSLv3/TLS write change cipher spec SSL_accept:SSLv3/TLS write finished -----BEGIN SSL SESSION PARAMETERS----- MHUCAQECAgMBBAIALwQgNbcRsh26hMujwXcoa5ZlBGihMY+GFhkTscR4Ds8fppwE MHAJs/h2ldK+C7Sm2fpNGbzYMycfUPGq4Ydg9PtnHPt1Mn9eH68tnQsT2nuTwGRq zqEGAgRftlMXogQCAhwgpAYEBAEAAAA= -----END SSL SESSION PARAMETERS----- Shared ciphers:AES128-SHA --- No server certificate CA names sent CIPHER is AES128-SHA Secure Renegotiation IS NOT supported Source content: File contents TermV-terminals-server.key: subject=/C=RU/ST=Sample/L=Sample/O=Sample/OU=Sample/CN=localhost issuer=/C=RU/ST=Sample/L=Sample/O=Sample/OU=Sample/CN=Sample -----BEGIN CERTIFICATE----- MIIDTjCCAjYCFBhhDBE3BeiTMD0dzFYOGILO8yq0MA0GCSqGSIb3DQEBCwUAMGIx CzAJBgNVBAYTAlJVMQ8wDQYDVQQIDAZTYW1wbGUxDzANBgNVBAcMBlNhbXBsZTEP MA0GA1UECgwGU2FtcGxlMQ8wDQYDVQQLDAZTYW1wbGUxDzANBgNVBAMMBlNhbXBs ZTAeFw0yMDAxMTgxODA5MDlaFw0yNDAxMTcxODA5MDlaMGUxCzAJBgNVBAYTAlJV MQ8wDQYDVQQIDAZTYW1wbGUxDzANBgNVBAcMBlNhbXBsZTEPMA0GA1UECgwGU2Ft cGxlMQ8wDQYDVQQLDAZTYW1wbGUxEjAQBgNVBAMMCWxvY2FsaG9zdDCCASIwDQYJ KoZIhvcNAQEBBQADggEPADCCAQoCggEBALQSjObDf16fv02qH+3FtI4eX2tPfj+u XsSF8KK6OpcNNfHv17LB9NRUGbZdeikvL5mjB1qd8Qt5YBzSYvvNmuQqn/ZZhEhg 9zqDd+j6dsl03OSW42qSP59M22plqhHZv1ZpkbpHSnEbbwbIVhgx1GuJvMHbQKxw et3UobG9M7q0/6Z2hlvbiuQgZWpc6+vnGGFUzVFjJhsUMgewU1UwTtfahOVegv9v ocuj+AOHzzH2+l72ybpKIFKZ6eXjr3sVp1lIPXm+gUNLqkReNV2QVk4H/j2ow3xu hdHjiPQ+6o6dgbCHeCvbf7Qs35S8YlQH/Mn2bik2NIMKucdq7S35AEsCAwEAATAN BgkqhkiG9w0BAQsFAAOCAQEAhANjStGtYfPJ2Ibkbn6ct4bWLPe6sFBvbwYow3Fd lBz0oxBukhJDOrPa4OqJDpnWenXkEcUrulI2JG5sIylOg3QlwlmgPoJU9fkpmr+u xNVlTxBSh1BVp0sccC+LxNRyDMl4C89R1TjPpPjoRU4cciY9N0oygPjTj0c26qBU iqwtyJTeeJYJUdplCMvXFOt8deqi/NBpBGnEfo8P/IeM/iCWLD5VtloHX/R0C+au q6803qd1/Gd0pIdsELQKrR6mBz6sWukg2f25GheLQVV7Wz/elZD8MwYwjYLoCtIP 65Ae3Eb6S2KlsVPzMj09u6kQ+KPfZtKu8tiUSc+11hurRw== -----END CERTIFICATE----- File contents TermV-terminals-server.crt: -----BEGIN PRIVATE KEY----- MIIEvwIBADANBgkqhkiG9w0BAQEFAASCBKkwggSlAgEAAoIBAQC0Eozmw39en79N qh/txbSOHl9rT34/rl7EhfCiujqXDTXx79eywfTUVBm2XXopLy+ZowdanfELeWAc 0mL7zZrkKp/2WYRIYPc6g3fo+nbJdNzkluNqkj+fTNtqZaoR2b9WaZG6R0pxG28G yFYYMdRribzB20CscHrd1KGxvTO6tP+mdoZb24rkIGVqXOvr5xhhVM1RYyYbFDIH sFNVME7X2oTlXoL/b6HLo/gDh88x9vpe9sm6SiBSmenl4697FadZSD15voFDS6pE XjVdkFZOB/49qMN8boXR44j0PuqOnYGwh3gr23+0LN+UvGJUB/zJ9m4pNjSDCrnH au0t+QBLAgMBAAECggEBAKWbKdpQkSME53sVqqeR26uYY0jdos4OHzm9tMDzZE7m 52XJniXYGsHrVnpRHbginTQ+qtS7zKMwzSO0mTPas0iDqvl0+iNWighWQEETl4tO 3peb7Spltf1bQa9oMDCagU2HaW5Xgi7jfAhQ1l0J9sGvutjOO3xbNaQtmUdNKfXa VRaof94/YKcbTPIn588orxfumgeiYwQ8exhA7yg1WLl2iSy9jj+8WrxaKvy4vR45 nXrb2tXletRoZZY/FC/NZNMgXsGTmYHl6blTEZVz7Zu0XPHKJo42tHnKHW46/ccJ vkXQNjUsu0JN95+lWBA5Yne8xddhiLNKv3DZ3iwXRAECgYEA17YaIbtlgSLd5hJJ OuS9n9XNUCEx1YLhDRzhHggPNTZkVxSnxnWVGpbubtWN/OggRtJyk+mLFV+aHLCa R224ofSPWWE1HtoSdtLcL5oLgp6RDoM61h1p1glFS7BpbYzBegAcbMJa1IvAMspx 5lsYowBUJLNHAEcqUrXzQ88gu2ECgYEA1bRugqLGXqz1E0z6o/MuGXfmJaGQEmJg 833As5jzsyd6pyznsB0TKUAJkcf0RmZrr1EDVigA9aLcwq4qThjGEL2FpGkOvXPC bY0c2pLnsZJetNmXnky/w+W127V+LbDjjQaYl/7c9Fp4hoomoykt7d1YW7lRZ2Le wo8muiGF5ysCgYEAlYHahMysop926tJ7vPzzTMfT4JjRQGnQ79S3VqhBWiFT1GM1 kcDHUkGQCnOrUMHWNSABV/FDe9HiL8Zbd+xdTqsBe/J67eI5b+/fuoJrPeIHKebc rbB/PWD5jWc8+zfWlWdkTCE88RnXYZyc6wryfW9p4nH7YP7yH5eKftIdnqECgYBl aWY33/661uDF8/XM742k0F0K5oxz7PONGNPlZmPfVJDD3G9mB6YcISNpZrXo4pmf bJZkwD8UUeDpEbVJsj/rmcRdrO0twk01p41Vu/jvL0J6F/f3SvyFffC6/nmOPS7+ sW6gUnWQD466abzEGLqO8kcH3/1dTnHfagc6tMXSWQKBgQCZjWzyLtEUxvWI2PSe B6/osxlYDyCkXrJDIT1LuepM/54Kre9YMUy2UZBVC42DR6paEbkAAqHdTsLNlKhV s+6/JGnEDR1e/L7ks0dBY8jow04r0mKG1M91SMLr5OeBTk6SRMnR7GAKewjeLmJD ULgsqyHSTh/4r6tDQ7Gayci2vQ== -----END PRIVATE KEY----- File contents ssl_server.h: #ifndef SSL_SERVER_H #define SSL_SERVER_H #define DEBUG_LEVEL 5 #if DEBUG_LEVEL > 0 #include "mbedtls/debug.h" #endif //#define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256 #include "mbedtls/entropy.h" #include "mbedtls/ctr_drbg.h" #include "mbedtls/certs.h" #include "mbedtls/x509.h" #include "mbedtls/ssl.h" #include "mbedtls/net_sockets.h" #include "mbedtls/error.h" #include "mbedtls/ssl_cache.h" #include "packet_handler/packet_handler.h" #include "thread_pool_ssl.h" #include "queue_ssl.h" extern pthread_mutex_t listen_fd1_mutex; extern mbedtls_net_context listen_fd1; extern void* runSSLServer(void *arg); #endif // SSL_SERVER_H File contents ssl_server.c: #include "ssl_server.h" mbedtls_net_context listen_fd1; pthread_mutex_t listen_fd1_mutex=PTHREAD_MUTEX_INITIALIZER; static mbedtls_ssl_config *config; #if DEBUG_LEVEL > 0 static void my_debug( void *ctx, int level, const char *file, int line, const char *str ) { ((void) level); char s[1000]; snprintf(s,sizeof(s),"%s:%04d: %s", file, line, str ); trace(s); } #endif void * runSSLServer(void *arg) { (void)(arg); int ret; char s[100]; int n = atoi(config_list[SSL_SERVER_NUM_THREADS].value); createThreadPoolSSLArray(n); mbedtls_net_context listen_fd, client_socket_ssl; const char pers[] = "ssl_pthread_server"; mbedtls_entropy_context entropy; mbedtls_ctr_drbg_context ctr_drbg; mbedtls_ssl_config conf; mbedtls_x509_crt srvcert; mbedtls_x509_crt cachain; mbedtls_pk_context pkey; mbedtls_ssl_cache_context cache; mbedtls_ssl_cache_init( &cache ); mbedtls_x509_crt_init( &srvcert ); mbedtls_x509_crt_init( &cachain ); mbedtls_ssl_config_init( &conf ); mbedtls_ctr_drbg_init( &ctr_drbg ); mbedtls_net_init( &listen_fd ); mbedtls_net_init( &client_socket_ssl ); config = &conf; /* * We use only a single entropy source that is used in all the threads. */ mbedtls_entropy_init( &entropy ); #if DEBUG_LEVEL > 0 mbedtls_debug_set_threshold(DEBUG_LEVEL); #endif /* * 1. Load the certificates and private RSA key */ trace( "[SSL Server] Loading the server cert. and key..." ); ret = mbedtls_x509_crt_parse_file( &srvcert,"/etc/minpay/cert/TermV-terminals-server.crt"); if( ret != 0 ) { snprintf(s,sizeof(s), "[SSL Server] failed\n ! mbedtls_x509_crt_parse_file returned %d\n\n", ret ); trace(s); goto thread_exit; } mbedtls_pk_init( &pkey ); ret = mbedtls_pk_parse_keyfile( &pkey,"/etc/minpay/cert/TermV-terminals-server.key" , NULL ); if( ret != 0 ) { snprintf(s,sizeof(s), "[SSL Server] failed\n ! mbedtls_pk_parse_keyfile returned %d\n\n", ret ); trace(s); goto thread_exit; } trace( "[SSL Server] ok\n" ); /* * 1b. Seed the random number generator */ trace( "Seeding the random number generator..." ); if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy, (const unsigned char *) pers, strlen( pers ) ) ) != 0 ) { snprintf(s,sizeof(s),"[SSL Server] failed: mbedtls_ctr_drbg_seed returned -0x%04x\n", -ret ); trace(s); goto thread_exit; } trace( "[SSL Server] ok\n" ); /* * 1c. Prepare SSL configuration */ trace( "[SSL Server] Setting up the SSL data...." ); if( ( ret = mbedtls_ssl_config_defaults( &conf, MBEDTLS_SSL_IS_SERVER, MBEDTLS_SSL_TRANSPORT_STREAM, MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 ) { snprintf(s,sizeof(s),"[SSL Server] failed: mbedtls_ssl_config_defaults returned -0x%04x\n", -ret ); trace(s); goto thread_exit; } mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg ); #if DEBUG_LEVEL > 0 mbedtls_ssl_conf_dbg( &conf, my_debug, NULL ); #endif /* mbedtls_ssl_cache_get() and mbedtls_ssl_cache_set() are thread-safe if * MBEDTLS_THREADING_C is set. */ mbedtls_ssl_conf_session_cache( &conf, &cache, mbedtls_ssl_cache_get, mbedtls_ssl_cache_set ); mbedtls_ssl_conf_ca_chain( &conf, &cachain, NULL ); if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 ) { snprintf(s,sizeof(s),"[SSL Server] failed\n ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret ); trace(s); goto thread_exit; } trace( "[SSL Server] ok\n" ); /* * 2. Setup the listening TCP socket */ snprintf(s,sizeof(s),"[SSL Server] Bind on localhost: %s ...","8080"); trace(s); fflush( stdout ); if( ( ret = mbedtls_net_bind( &listen_fd, NULL, "8080", MBEDTLS_NET_PROTO_TCP ) ) != 0 ) { snprintf(s,sizeof(s),"[SSL Server] failed\n ! mbedtls_net_bind returned %d\n\n", ret ); trace(s); goto thread_exit; } trace( "[SSL Server] ok\n" ); pthread_mutex_lock(&listen_fd1_mutex); listen_fd1 = listen_fd; pthread_mutex_unlock(&listen_fd1_mutex); while(true) { //reset: if(ret!=0) { char error_buf[100]; mbedtls_strerror( ret, error_buf, 100 ); snprintf(s,sizeof(s),"[SSL Server] Last error was: -0x%04x - %s\n", -ret, error_buf ); trace(s); } /* * 3. Wait until a client connects */ trace( "[SSL Server] Waiting for a remote connection\n" ); int ret =mbedtls_net_accept(&listen_fd,&client_socket_ssl,NULL,0,NULL); if(ret != 0) { snprintf(s,sizeof(s), "[SSL Server] failed: mbedtls_net_accept returned -0x%04x\n", ret); trace(s); break; } trace( "[SSL Server] ok\n" ); //do whatever we do with connections. //put the connection somewhere so that an available thread //can find it. mbedtls_net_context *pclient = malloc(sizeof(mbedtls_net_context)); *pclient = client_socket_ssl; pthread_mutex_lock(&client_socket_ssl_mutex); enqueue_ssl(pclient); pthread_cond_signal(&condition_var_ssl); pthread_mutex_unlock(&client_socket_ssl_mutex); ret = 0; } thread_exit: mbedtls_x509_crt_free( &srvcert ); mbedtls_pk_free( &pkey ); mbedtls_ssl_cache_free( &cache ); mbedtls_ctr_drbg_free( &ctr_drbg ); mbedtls_entropy_free( &entropy ); mbedtls_ssl_config_free( &conf ); mbedtls_net_free( &listen_fd ); deleteThreadPoolSSLArray(); return NULL; } static void *handleConnectionSSL(mbedtls_net_context *p_net_context) { int ret, len; char s[100]; struct packet_handler handler={}; handler.net_context = *p_net_context; free(p_net_context);// we really don't need this anymore unsigned char buf[1024]; /* Make sure memory references are valid */ mbedtls_ssl_init( &handler.ssl ); snprintf(s,sizeof(s),"[SSL client_socket=%d] Setting up SSL/TLS data\n", handler.net_context.fd ); trace(s); /* * 4. Get the SSL context ready */ if( ( ret = mbedtls_ssl_setup( &handler.ssl, config ) ) != 0 ) { snprintf(s,sizeof(s),"[SSL client_socket=%d] failed: mbedtls_ssl_setup returned -0x%04x\n",handler.net_context.fd, -ret ); trace(s); goto thread_exit; } mbedtls_ssl_set_bio( &handler.ssl, (mbedtls_net_context*)&handler.net_context, mbedtls_net_send, mbedtls_net_recv, NULL ); /* * 5. Handshake */ snprintf(s,sizeof(s),"[SSL client_socket=%d] Performing the SSL/TLS handshake\n", handler.net_context.fd); trace(s); while( ( ret = mbedtls_ssl_handshake( &handler.ssl ) ) != 0 ) { if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) { snprintf(s,sizeof(s),"[SSL client_socket=%d] failed: mbedtls_ssl_handshake returned -0x%04x\n", handler.net_context.fd, -ret ); trace(s); goto thread_exit; } } snprintf(s,sizeof(s),"[SSL client_socket=%d] ok\n", handler.net_context.fd ); trace(s); ret = runPacketHandler(&handler); snprintf(s,sizeof(s), "[SSL client_socket=%d] . Closing the connection...", handler.net_context.fd ); trace(s); while( ( ret = mbedtls_ssl_close_notify( &handler.ssl ) ) < 0 ) { if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) { snprintf(s,sizeof(s), "[SSL client_socket=%d] failed: mbedtls_ssl_close_notify returned -0x%04x\n", handler.net_context.fd, ret); trace(s); goto thread_exit; } } trace( " ok\n" ); ret = 0; thread_exit: if( ret != 0 ) { char error_buf[100]; mbedtls_strerror( ret, error_buf, 100 ); snprintf(s,sizeof(s), "[SSL client_socket=%d] Last error was: -0x%04x - %s\n\n", handler.net_context.fd, -ret, error_buf ); trace(s); } mbedtls_net_free((mbedtls_net_context*)&handler.net_context); mbedtls_ssl_free(&handler.ssl); return NULL; } void *threadFunctionSSL(void *arg) { (void)(arg); while(true) { mbedtls_net_context *pclient; pthread_mutex_lock(&client_socket_ssl_mutex); if((pclient=dequeue_ssl())==NULL) { pthread_cond_wait((pthread_cond_t *)&pclient,&client_socket_ssl_mutex); //try again pclient = dequeue_ssl(); } pthread_mutex_unlock(&client_socket_ssl_mutex); if(pclient!=NULL) { //we have a connection handleConnectionSSL(pclient); } } } File contents thread_pool_ssl.h: #ifndef SSL_THREAD_POOL_H #define SSL_THREAD_POOL_H #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <stdbool.h> #include <pthread.h> #include "mbedtls/net_sockets.h" extern pthread_t *thread_pool_ssl; extern pthread_mutex_t client_socket_ssl_mutex; extern pthread_cond_t condition_var_ssl; void createThreadPoolSSLArray(int n); void deleteThreadPoolSSLArray(); extern void *handleSSLConnection(int* p_client_socket); extern void *threadFunctionSSL(void *arg); #endif // SSL_THREAD_POOL_H File contents thread_pool_ssl.c: #include "thread_pool_ssl.h" pthread_t *thread_pool_ssl=NULL; pthread_mutex_t client_socket_ssl_mutex = PTHREAD_MUTEX_INITIALIZER; pthread_cond_t condition_var_ssl = PTHREAD_COND_INITIALIZER; void *threadFunctionSSL(void *arg); void createThreadPoolSSLArray(int n) { thread_pool_ssl = (pthread_t*)malloc(n); //first off create a bunch of threads to handle future connections for(int i=0; i<n;i++) { pthread_create(&thread_pool_ssl[i],NULL,threadFunctionSSL,NULL); } } void deleteThreadPoolSSLArray() { free(thread_pool_ssl); } File contents main.c: #include <stdio.h> #include "log.h" #include "ssl_server.h" #include <signal.h> void catchSigterm(); void catchSigint(); void runPortListening(); int main() { catchSigterm(); catchSigint(); runPortListening(); return 0; } void runPortListening() { trace("Starting port listening..."); pthread_t handleID; pthread_create(&handleID,NULL,runSSLServer,NULL); trace("Port listening started."); pthread_join(handleID,NULL); trace("Port listening complete."); } void closeServer() { trace("Shutdown SSL Server..."); pthread_mutex_lock(&listen_fd1_mutex); mbedtls_net_free(&listen_fd1); pthread_mutex_unlock(&listen_fd1_mutex); } void sigTermHandler(int signum, siginfo_t *info, void *ptr) { (void)signum; (void)info; (void)ptr; closeServer(); } void catchSigterm() { static struct sigaction _sigact; memset(&_sigact, 0, sizeof(_sigact)); _sigact.sa_sigaction = sigTermHandler; _sigact.sa_flags = SA_SIGINFO; sigaction(SIGTERM, &_sigact, NULL); } void sigIntHandler(int signum, siginfo_t *info, void *ptr) { (void)signum; (void)info; (void)ptr; closeServer(); } void catchSigint() { static struct sigaction _sigact; memset(&_sigact, 0, sizeof(_sigact)); _sigact.sa_sigaction = sigIntHandler; _sigact.sa_flags = SA_SIGINFO; sigaction(SIGINT, &_sigact, NULL); } Log files attached to the email. Regards, Michael.

5 years, 8 months

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Info regarding Mbedtls architecture

by Eikansh Gupta

Hi everyone, I am a Mtech student from Indian Institute of Science, Bangalore(India). Currently, I am crediting computer security course. As the course project, the professor has asked us to rewrite Mbedtls using Rust language. The entire class will work on the single project with each person working on a single module. I am having trouble finding information regarding Mbedtls architecture, its modules and their working. I don't even know all the right resources I need to work on the project. It would save a lot of time if someone could point me to the right resources regarding Mbedtls needed for this project. Sincerely, Eikansh Gupta

5 years, 9 months

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Re: [mbed-tls] PKCS7 compliance

by Gilles Peskine

I forgot to mention that there is a work in progress to add PKCS#7 parsing: https://github.com/ARMmbed/mbedtls/pull/3431 This is an external contribution so its addition to Mbed TLS depends not only on us maintainers' review bandwidth, but also on the availability of the kind contributor. I'm not familiar with .p7* formats so I don't know whether the support added by this pull request is sufficient to cover all of those. -- Gilles Peskine Mbed TLS developer On 06/11/2020 13:50, Alvaro Gonzalez via mbed-tls wrote: > > Hello mbed-tls mailing list. > > ï¿½ > > Does mbed-tls comply PKCS7? Can handle .p7, .p7b and/or .p7a extension > files? > > ï¿½ > > Best Regards. > > ï¿½ > >

5 years, 9 months

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Re: [mbed-tls] PKCS7 Generation Contribution

by Gilles Peskine

Hi Nick, It would be great to have even partial support of PKCS#7 in Mbed TLS and we would welcome your contribution! You can find some guidance in CONTRIBUTING.md (https://github.com/ARMmbed/mbedtls/blob/development/CONTRIBUTING.md). Feel free to ask on the mailing list if anything is unclear. Note that there is a work in progress for adding PKCS#7 parsing: https://github.com/ARMmbed/mbedtls/pull/3431 . It may help to see what it does, but also note the review comments that point out some remaining issues. If you and naynajain work on parsing and generation at the same time, you'll need to synchronize since both sides will need to create pkcs7.[hc]. -- Gilles Peskine Mbed TLS developer On 10/11/2020 17:28, Nick Child via mbed-tls wrote: > Hello, > > For one of my projects, I had to create a PKCS7 generation/builder. I > noticed mbedtls currently has no support for PKCS7. After much trial > and error, I was able to use mbedtls functions to create a PKCS7 > structure for Signed Data. I was wondering if this something that > might be useful in later versions of mbedtls? The code currently has a > long way to go until it meets mbedtls coding standards, but I figured > I would ask if it is even possible and worth the efforts before > getting into it. I am also a rookie when it comes to open source > contributions, so I was hoping for some guidance regarding merging > upstream. > > Thanks for your time, > > Nick Child >

5 years, 9 months

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PKCS7 Generation Contribution

by Nick Child

Hello, For one of my projects, I had to create a PKCS7 generation/builder. I noticed mbedtls currently has no support for PKCS7. After much trial and error, I was able to use mbedtls functions to create a PKCS7 structure for Signed Data. I was wondering if this something that might be useful in later versions of mbedtls? The code currently has a long way to go until it meets mbedtls coding standards, but I figured I would ask if it is even possible and worth the efforts before getting into it. I am also a rookie when it comes to open source contributions, so I was hoping for some guidance regarding merging upstream. Thanks for your time, Nick Child

5 years, 9 months

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Re: [mbed-tls] PKCS7 compliance

by Gilles Peskine

Hello, No, unfortunately Mbed TLS does not support the PKCS#7 CMS format. Contributions would be welcome. -- Gilles Peskine Mbed TLS developer On 06/11/2020 13:50, Alvaro Gonzalez via mbed-tls wrote: > > Hello mbed-tls mailing list. > > ï¿½ > > Does mbed-tls comply PKCS7? Can handle .p7, .p7b and/or .p7a extension > files? > > ï¿½ > > Best Regards. > > ï¿½ > >

5 years, 9 months

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Re: [mbed-tls] TLS-SRP Support

by Gilles Peskine

Hello, Mbed TLS does not currently support SRP and it is not on our roadmap (https://developer.trustedfirmware.org/w/mbed-tls/roadmap/). Arm does not intend to work on it, but support can be added if someone else contributes it. If you are interested in contributing SRP support, please discuss it on this list first to settle some potential issues: conflicts with other work (in particular TLS 1.3 preparation, which involves some refactoring of existing TLS code), review bandwidth schedule, test plan. -- Gilles Peskine Mbed TLS developer On 09/11/2020 14:01, Gijs Peskens via mbed-tls wrote: > > For an Open Source project we started using Mbed-TLS to do AES > encryption and, in a future version, will use Mbed-TLS for DTLS. > Part of the protocol we support requires TLS-SRP (either via DTLS or > via EAP), I’m unable to find anything relating to TLS-SRP support. > > Does Mbed-TLS support TLS-SRP currently? And if not is there intention > to add it in a future release? > > Br, > > Gijs Peskens > >

5 years, 9 months

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Re: [mbed-tls] TLS-SRP Support

by Janos Follath

Hi Gijs, I am not sure what TLS-SRP support is, could you please point me to the standard defining it? Best regards, Janos From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of Gijs Peskens via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> Reply to: Gijs Peskens <gijsje(a)heteigenwijsje.nl> Date: Monday, 9 November 2020 at 13:02 To: "mbed-tls(a)lists.trustedfirmware.org" <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] TLS-SRP Support For an Open Source project we started using Mbed-TLS to do AES encryption and, in a future version, will use Mbed-TLS for DTLS. Part of the protocol we support requires TLS-SRP (either via DTLS or via EAP), I’m unable to find anything relating to TLS-SRP support. Does Mbed-TLS support TLS-SRP currently? And if not is there intention to add it in a future release? Br, Gijs Peskens

5 years, 9 months

2
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TLS-SRP Support

by Gijs Peskens

For an Open Source project we started using Mbed-TLS to do AES encryption and, in a future version, will use Mbed-TLS for DTLS. Part of the protocol we support requires TLS-SRP (either via DTLS or via EAP), I’m unable to find anything relating to TLS-SRP support. Does Mbed-TLS support TLS-SRP currently? And if not is there intention to add it in a future release? Br, Gijs Peskens

5 years, 9 months

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PKCS7 compliance

by Alvaro Gonzalez

Hello mbed-tls mailing list. Does mbed-tls comply PKCS7? Can handle .p7, .p7b and/or .p7a extension files? Best Regards.

5 years, 9 months

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Re: [mbed-tls] Chinese characters garbled after calling mbedtls_x509_crt_info() or mbedtls_x509_dn_gets()

by Janos Follath

Hi Newt, This is normal and happens not just to Chinese characters, but to all non-ASCII characters. This supposed to be a feature of Mbed TLS, to ensure that we return something printable whether the platform can handle the original encoding or not. Of course we can consider providing a way to add an option to disable this feature: if you would like to submit a PR, please let us discuss first what can be done. If you wouldn't like to submit a PR, then please raise an issue on github for this feature request. Until this feature is implemented, you can access the original encoding in the `val` field of the `mbedtls_x509_name` parameter you would be passing to `mbedtls_x509_dn_gets()`. Regards, Janos On 06/11/2020, 03:54, "mbed-tls on behalf of 马瑞宜 via mbed-tls" <mbed-tls-bounces(a)lists.trustedfirmware.org on behalf of mbed-tls(a)lists.trustedfirmware.org> wrote: Hello everyone, I have this certificate blob and I'm using mbedtls to read this, but after called mbedtls_x509_crt_info() or mbedtls_x509_dn_gets(), the chinese characters got garbled. I have googled this, read the mbedtls knowledge base and searched the issues and got no luck. The field i want to parse is the subject field and the issuer field. and currently I cannot provide the certificate blob due to security reasons. Any help would be much appreciated. Sincerely, Newt Ma -- mbed-tls mailing list mbed-tls(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls

5 years, 9 months

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Chinese characters garbled after calling mbedtls_x509_crt_info() or mbedtls_x509_dn_gets()

by 马瑞宜

Hello everyone, I have this certificate blob and I'm using mbedtls to read this, but after called mbedtls_x509_crt_info() or mbedtls_x509_dn_gets(), the chinese characters got garbled. I have googled this, read the mbedtls knowledge base and searched the issues and got no luck. The field i want to parse is the subject field and the issuer field. and currently I cannot provide the certificate blob due to security reasons. Any help would be much appreciated. Sincerely, Newt Ma

5 years, 9 months

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Re: [mbed-tls] About mbedtls CVE

by Janos Follath

Hi Sawyer, After looking at the issues in more detail I would like to be more precise about CVE-2018-1000520: * It is not a security issue in the context of TLS 1.2 * It can be a security issue if TLS 1.0 or TLS 1.1 is used * The severity is so low that we decided not fixing it ourselves, but to open it up for community contributions * The corresponding issue has been closed down by mistake, I am reopening it now: https://github.com/ARMmbed/mbedtls/issues/1561 (Many thanks to Simon Butcher for noticing this and pointing it out.) Please let me know if I you would like to know more about this issue. Best regards, Janos (Mbed TLS developer) From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of Janos Follath via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> Reply to: Janos Follath <Janos.Follath(a)arm.com> Date: Wednesday, 28 October 2020 at 09:42 To: Sawyer Liu <sawyer.liu(a)nxp.com> Cc: "mbed-tls(a)lists.trustedfirmware.org" <mbed-tls(a)lists.trustedfirmware.org> Subject: Re: [mbed-tls] About mbedtls CVE Hi Sawyer, Thank you for your interest in Mbed TLS. Currently the status of these CVE’s is: - CVE-2020-16150 has been fixed in the latest Mbed TLS release - CVE-2018-1000520 is not a security issue, it had been studied and rejected - CVE-2016-3739 is a vulnerability in an application using Mbed TLS but not in Mbed TLS itself, also it too had been fixed. Does this answer your question? (Also, I would like to make a minor clarification: we are not Arm Support. As far as I know Arm does not offer official support for Mbed TLS. Arm only contributes engineers to the Mbed TLS project, and at the moment these engineers are the maintainers of Mbed TLS. We are on this mailing list and try to answer questions, but we are not doing that as official support provided by Arm, but as members of the community. Mbed TLS is supported by the community and this mailing list is indeed the right place to get that support. I apologise for the nitpick, I just wanted to make sure that we are not giving the wrong impressions.) Best regards, Janos (Mbed TLS developer) From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of Sawyer Liu via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> Reply to: Sawyer Liu <sawyer.liu(a)nxp.com> Date: Wednesday, 28 October 2020 at 01:59 To: "mbed-tls(a)lists.trustedfirmware.org" <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] About mbedtls CVE Hello ARM Support, About below CVEs, any update? Thanks. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16150<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcve.mitre…> https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000520 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3739 Best Regards Sawyer Liu Microcontrollers, NXP Semiconductors

5 years, 9 months

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Re: [mbed-tls] Questions about PSA Crypto API and mbed TLS

by Gilles Peskine

Hello, On 05/11/2020 17:49, François Beerten via mbed-tls wrote: > Hi, > > Thank you Gilles for the detailed reply. > > Do you prefer that discussion about PSA Crypto API spec go on mailing > list instead of here ? Is there some room for evolution or is the spec > already in a frozen released state ? Please use the psa-crypto list since there may be participants there who don't care about Mbed TLS. Version 1.0 of the PSA Crypto API is official so we won't make incompatible changes unless there is a compelling reason. We can, and will, add features in 1.x versions of the specification. Among planned features are: more algorithm declarations, key wrapping, key stretching, and a better treatment of key establishment (including password-based key establishment). > > For new algorithms, it's of course preferable that they're defined in > the spec itself. But does the mbedtls project want to supports all > algorithms that will be used with PSA Crypto API ? Mbed TLS intends to be a reference implementation of the PSA crypto API. However it isn't clear whether this means that Mbed TLS will eventually support all algorithms that the API declares: we intend to support all methods, but not necessarily all algorithms. A conforming implementation of the API is allowed to support any subset of the algorithms. We (here meaning Arm, not Mbed TLS) don't have a formal policy to decide whether to include a declaration for an algorithm, but here are some criteria that we're likely to follow: * There should be a public specification. (This can be a document that's only for purchase, such as an ISO standard.) * The algorithm should either be in good standing, or in current use in legacy protocols. * The bar is low for adding an algorithm that just requires a #define. It's a lot higher if a new function is needed. * Availability in Mbed TLS is not required. > > For pure ED25519 and ED448 with scattered data, there's one big > gotcha. You need to generate twice a hash that includes the message. > Thus the implementation needs to be able to access the buffers of the > message twice. With a piece of the message given only once as in the > init-update-finish scheme, that does not work well. > > From reading the document on the PSA Crypto driver API, a transparent > driver benefits from the management of keys done by the mbedtls > implementation. But what benefit is there for a driver working with > opaque keys which has to fully handle the protections and restrictions > of keys internally ? > One of the driving goals of PSA is to make security unobtrusive, and to facilitate security improvements. A unified interface to key management makes it easy to upgrade from having all keys inside, to using a single-chip application separation technology (MMU, MPU, secure enclave, …), to wrapping keys in a secure element and storing the wrapped key externally, to storing keys in a secure element (which protects against undeletion). When an application uses a key, it doesn't need to care where the key is stored. Best regards, -- Gilles Peskine > Best, > > François. > > > On 11/2/20 11:01 PM, Gilles Peskine via mbed-tls wrote: >> Hello, >> >> Thank you for your interest in the PSA crypto API. >> >> On 28/10/2020 15:20, François Beerten via mbed-tls wrote: >>> Hi everybody, >>> >>> After reading the PSA Crypto API specs (as on >>> https://armmbed.github.io/mbed-crypto/html/overview/functionality.html) >>> and looking at the mbed TLS library, a few questions came up. >>> >>> Is there some repository with the sources of the PSA Crypto API specs >>> where one can follow the evolution and eventually send proposals and >>> patches ? >>> >> The PSA specification drafts are not public. You can send feedback about >> the PSA Crypto application and driver interfaces on the psa-crypto >> mailing list (psa-crypto(a)lists.trustedfirmware.org, >> https://lists.trustedfirmware.org/mailman/listinfo/psa-crypto). If you >> prefer to send confidential feedback, you can email mbed-crypto(a)arm.com >> (feedback at this address will only be discussed inside Arm). An issue >> in the Mbed TLS repository will also reach PSA Crypto architects. >> >>> A note says "Hash suspend and resume is not defined for the SHA3 >>> family of hash algorithms". Why are they not defined for SHA3 ? >>> >> The hash suspend/resume operations marshall the internal state of the >> hash operation. They mimic an existing JavaCard API >> (https://docs.oracle.com/javacard/3.0.5/api/javacard/security/InitializedMes…). >> >> There is a de facto standard representation of the internal state for >> common Merkle-Damgård constructions, which covers all the currently >> defined hash algorithms except SHA3. If there's interest in this >> functionality, we could standardize a representation for SHA3. >> >>> How can or should one add support in PSA Crypto AP for not yet defined >>> algorithms (for example a KDF) ? >>> >> Answer from a PSA Crypto architect: preferably by requesting an encoding >> for this KDF as a PSA_ALG_xxx value (as well as new >> PSA_KEY_DERIVATION_INPUT_xxx values if applicable). If you can't do >> that, use an encoding in the vendor range (most significant bit set). >> >> The world of key derivation functions is unfortunately messy: there are >> many similar, but not functionally equivalent constructions (such as >> hashing a secret together with a nonce, formatted in all kinds of >> different ways). The set of KDF in PSA Crypto 1.0.0 was the minimum set >> required for the TLS protocol. We expect 1.0.x updates to define more >> KDF algorithms. >> >> Answer from an Mbed TLS maintainer: contributing an implementation would >> be appreciated (but not required). >> >>> In multipart operations, can the user reuse the input buffers >>> immediately after doing an 'update' (for example after >>> psa_hash_update()) ? And can he reuse the input buffers immediately >>> after some "setup" functions like psa_cipher_set_iv() or >>> psa_aead_set_nonce() ? >>> >> Yes. PSA crypto API functions that take a buffer as a parameter never >> take ownership of that buffer. Once the function returns, you can do >> whatever you want with the buffer. >> >> The PSA specification even guarantees that you can use the same buffer, >> or overlapping buffers, as inputs and outputs to the same function call. >> However beware that the Mbed TLS implementation does not always support >> such overlap (https://github.com/ARMmbed/mbedtls/issues/3266). >> >>> Do you plan to support (pure) ED25519 and ED448 only via >>> psa_sign_message() and psa_verify_message() ? What about messages in >>> multiple chunks ? >>> >> We plan to add a multi-part message signature interface, both for the >> sake of pureEdDSA and suitable for Mbed TLS's restartable ECDSA. I >> expect the design to be “what you'd expect” but I haven't yet verified >> that there aren't any gotchas. >> >>> In psa_asymmetric_encrypt(), why is the salt provided explicitely. >>> Shouldn't it be generated randomly internally when needed ? >>> >> Some applications use a fixed or deterministic salt which they check on >> decryption. Note that this parameter is what PKCS#1 calls “label”. >> >>> With PSA Crypto API, you define a flexible API for cryptographic >>> operations. Apparently, other providers could make their own >>> implementation of PSA Crypto API. Will mbed TLS then be able to use >>> those alternate PSA Crypto API implementations ? How would that work >>> practically ? >>> >> The X.509 and TLS layer of Mbed TLS are currently designed to use the >> mbedtls_xxx crypto API. We have already added partial support for the >> psa_xxx crypto API (with MBEDTLS_USE_PSA_CRYPTO), however it is not yet >> possible to fully decouple the X.509/TLS layers from the Mbed TLS crypto >> implementation. (I think this is already possible for a small set of >> cipher suites, but it isn't something that we've tried or currently >> actively support.) Before this can happen, some Mbed TLS APIs need to >> change, which will happen in 2021 with Mbed TLS 3.0. After that, we plan >> to decouple the PSA crypto reference implementation (Mbed TLS's current >> crypto implementation) from the X.509/TLS layer (which will remain “Mbed >> TLS”). Our plans >> (https://developer.trustedfirmware.org/w/mbed-tls/roadmap/) that far >> into the future are still vague and may change. >> >> Note that for the most common case of wanting a different implementation >> of cryptography, which is to leverage hardware such as accelerators and >> secure elements, PSA is defining a driver interface which is currently >> being implemented in Mbed TLS >> (https://github.com/ARMmbed/mbedtls/blob/development/docs/proposed/psa-drive…). >> >> The driver interface lets you combine mechanisms supported by your >> hardware with Mbed TLS's implementation for mechanisms without hardware >> support. >>

5 years, 9 months

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Re: [mbed-tls] Mbed TLS Virtual Workshop Tomorrow

by Shebu Varghese Kuriakose

Hi Francois, The workshop slides and recordings are now available here - https://www.trustedfirmware.org/meetings/mbed-tls-workshop/ Regards, Shebu From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> On Behalf Of François Beerten via mbed-tls Sent: Thursday, November 5, 2020 4:52 PM To: mbed-tls(a)lists.trustedfirmware.org Subject: Re: [mbed-tls] Mbed TLS Virtual Workshop Tomorrow Hi Shebu, Will you post the slides of the presentations of the workshop ? Thanks, François. On 11/2/20 9:01 PM, Shebu Varghese Kuriakose via mbed-tls wrote: Hi All, Gentle reminder about the Mbed TLS workshop tomorrow (Tuesday, November 3rd) from 2 to 6pm GMT. See agenda and zoom link here - https://www.trustedfirmware.org/meetings/mbed-tls-workshop/ Thanks, Shebu -----Original Appointment----- From: Trusted Firmware Public Meetings <linaro.org_havjv2figrh5egaiurb229pd8c(a)group.calendar.google.com><mailto:linaro.org_havjv2figrh5egaiurb229pd8c@group.calendar.google.com> Sent: Friday, October 23, 2020 12:32 AM To: Trusted Firmware Public Meetings; Shebu Varghese Kuriakose; mbed-tls(a)lists.trustedfirmware.org<mailto:mbed-tls@lists.trustedfirmware.org>; Don Harbin; psa-crypto(a)lists.trustedfirmware.org<mailto:psa-crypto@lists.trustedfirmware.org>; Dave Rodgman Subject: Mbed TLS Virtual Workshop When: Tuesday, November 3, 2020 2:00 PM-6:00 PM (UTC+00:00) Dublin, Edinburgh, Lisbon, London. Where: Zoom: https://linaro-org.zoom.us/j/95315200315?pwd=ZDJGc1BZMHZLV29DTmpGUllmMjB1UT… You have been invited to the following event. Mbed TLS Virtual Workshop When Tue Nov 3, 2020 7am – 11am Mountain Standard Time - Phoenix Where Zoom: https://linaro-org.zoom.us/j/95315200315?pwd=ZDJGc1BZMHZLV29DTmpGUllmMjB1UT… (map<https://www.google.com/maps/search/Zoom:+https:%2F%2Flinaro-org.zoom.us%2Fj…>) Calendar shebu.varghesekuriakose(a)arm.com<mailto:shebu.varghesekuriakose@arm.com> Who • Don Harbin - creator • shebu.varghesekuriakose(a)arm.com<mailto:shebu.varghesekuriakose@arm.com> • mbed-tls(a)lists.trustedfirmware.org<mailto:mbed-tls@lists.trustedfirmware.org> • psa-crypto(a)lists.trustedfirmware.org<mailto:psa-crypto@lists.trustedfirmware.org> • dave.rodgman(a)arm.com<mailto:dave.rodgman@arm.com> more details »<https://www.google.com/calendar/event?action=VIEW&eid=NHVvY2FxY2o4Njk3MWZkd…> Hi, Trustedfirmware.org community project would like to invite you to the Mbed TLS Virtual Workshop. The purpose of the workshop is to bring together the Mbed TLS community including maintainers, contributors and users to discuss * The future direction of the project and * Ways to improve community collaboration Here is the agenda for the workshop. Topic Time (in GMT) Welcome 2.00 - 2.10pm Constant-time code 2.10 – 2.30pm Processes - how does work get scheduled? 2.30 – 2.50pm PSA Crypto APIs 2.50 – 3.20pm PSA Crypto for Silicon Labs Wireless MCUs - Why, What, Where and When 3.20 – 3.50pm Break Roadmap, TLS1.3 Update 4.10 – 4.30pm Mbed TLS 3.0 Plans, Scope 4.30 – 5.00pm How do I contribute my first review and be an effective Mbed TLS reviewer 5.00 – 5.30pm Regards, Don Harbin Trusted Firmware Community Manager ==============Zoom details below:==================== Trusted Firmware is inviting you to a scheduled Zoom meeting. Topic: Mbed TLS Virtual Workshop Time: Nov 3, 2020 02:00 PM Greenwich Mean Time Join Zoom Meeting https://linaro-org.zoom.us/j/95315200315?pwd=ZDJGc1BZMHZLV29DTmpGUllmMjB1UT…<https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F9531520…> Meeting ID: 953 1520 0315 Passcode: 143755 One tap mobile +16699009128,,95315200315# US (San Jose) +12532158782,,95315200315# US (Tacoma) Dial by your location +1 669 900 9128 US (San Jose) +1 253 215 8782 US (Tacoma) +1 346 248 7799 US (Houston) +1 646 558 8656 US (New York) +1 301 715 8592 US (Germantown) +1 312 626 6799 US (Chicago) 888 788 0099 US Toll-free 877 853 5247 US Toll-free Meeting ID: 953 1520 0315 Find your local number: https://linaro-org.zoom.us/u/apL3hgti4<https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fu%2FapL3hgt…> Going (shebu.varghesekuriakose(a)arm.com<mailto:shebu.varghesekuriakose@arm.com>)? Yes<https://www.google.com/calendar/event?action=RESPOND&eid=NHVvY2FxY2o4Njk3MW…> - Maybe<https://www.google.com/calendar/event?action=RESPOND&eid=NHVvY2FxY2o4Njk3MW…> - No<https://www.google.com/calendar/event?action=RESPOND&eid=NHVvY2FxY2o4Njk3MW…> more options »<https://www.google.com/calendar/event?action=VIEW&eid=NHVvY2FxY2o4Njk3MWZkd…> Invitation from Google Calendar<https://www.google.com/calendar/> You are receiving this courtesy email at the account shebu.varghesekuriakose(a)arm.com<mailto:shebu.varghesekuriakose@arm.com> because you are an attendee of this event. To stop receiving future updates for this event, decline this event. Alternatively you can sign up for a Google account at https://www.google.com/calendar/ and control your notification settings for your entire calendar. Forwarding this invitation could allow any recipient to send a response to the organizer and be added to the guest list, or invite others regardless of their own invitation status, or to modify your RSVP. Learn More<https://support.google.com/calendar/answer/37135#forwarding>.

5 years, 9 months

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Re: [mbed-tls] Mbed TLS Virtual Workshop Tomorrow

by François Beerten

Hi Shebu, Will you post the slides of the presentations of the workshop ? Thanks, François. On 11/2/20 9:01 PM, Shebu Varghese Kuriakose via mbed-tls wrote: > > Hi All, > > Gentle reminder about the Mbed TLS workshop tomorrow (Tuesday, > November 3^rd ) from 2 to 6pm GMT. > > See agenda and zoom link here - > https://www.trustedfirmware.org/meetings/mbed-tls-workshop/ > <https://www.trustedfirmware.org/meetings/mbed-tls-workshop/> > > Thanks, > > Shebu > > -----Original Appointment----- > *From:* Trusted Firmware Public Meetings > <linaro.org_havjv2figrh5egaiurb229pd8c(a)group.calendar.google.com> > *Sent:* Friday, October 23, 2020 12:32 AM > *To:* Trusted Firmware Public Meetings; Shebu Varghese Kuriakose; > mbed-tls(a)lists.trustedfirmware.org; Don Harbin; > psa-crypto(a)lists.trustedfirmware.org; Dave Rodgman > *Subject:* Mbed TLS Virtual Workshop > *When:* Tuesday, November 3, 2020 2:00 PM-6:00 PM (UTC+00:00) Dublin, > Edinburgh, Lisbon, London. > *Where:* Zoom: > https://linaro-org.zoom.us/j/95315200315?pwd=ZDJGc1BZMHZLV29DTmpGUllmMjB1UT… > > > *You have been invited to the following event.* > > > Mbed TLS Virtual Workshop > > When > > > > Tue Nov 3, 2020 7am – 11am Mountain Standard Time - Phoenix > > Where > > > > Zoom: > https://linaro-org.zoom.us/j/95315200315?pwd=ZDJGc1BZMHZLV29DTmpGUllmMjB1UT… > (map > <https://www.google.com/maps/search/Zoom:+https:%2F%2Flinaro-org.zoom.us%2Fj…>) > > Calendar > > > > shebu.varghesekuriakose(a)arm.com <mailto:shebu.varghesekuriakose@arm.com> > > Who > > > > • > > > > Don Harbin- creator > > • > > > > shebu.varghesekuriakose(a)arm.com <mailto:shebu.varghesekuriakose@arm.com> > > • > > > > mbed-tls(a)lists.trustedfirmware.org > <mailto:mbed-tls@lists.trustedfirmware.org> > > • > > > > psa-crypto(a)lists.trustedfirmware.org > <mailto:psa-crypto@lists.trustedfirmware.org> > > • > > > > dave.rodgman(a)arm.com <mailto:dave.rodgman@arm.com> > > *more details » > <https://www.google.com/calendar/event?action=VIEW&eid=NHVvY2FxY2o4Njk3MWZkd…>*** > > Hi, > Trustedfirmware.org community project would like to invite you to the > Mbed TLS Virtual Workshop. > > The purpose of the workshop is to bring together the Mbed TLS > community including maintainers, contributors and users to discuss > > * The future direction of the project and > * Ways to improve community collaboration > > Here is the agenda for the workshop. > > *Topic Time (in GMT)* > Welcome 2.00 - 2.10pm > Constant-time code 2.10 – 2.30pm > Processes - how does work get scheduled? 2.30 – 2.50pm > PSA Crypto APIs 2.50 – 3.20pm > PSA Crypto for Silicon Labs Wireless > MCUs - Why, What, Where and When 3.20 – 3.50pm > > *Break * > > Roadmap, TLS1.3 Update 4.10 – 4.30pm > Mbed TLS 3.0 Plans, Scope 4.30 – 5.00pm > How do I contribute my first review > and be an effective Mbed TLS reviewer 5.00 – 5.30pm > > Regards, > > Don Harbin > Trusted Firmware Community Manager > > > ==============Zoom details below:==================== > Trusted Firmware is inviting you to a scheduled Zoom meeting. > > Topic: Mbed TLS Virtual Workshop > Time: Nov 3, 2020 02:00 PM Greenwich Mean Time > > Join Zoom Meeting > https://linaro-org.zoom.us/j/95315200315?pwd=ZDJGc1BZMHZLV29DTmpGUllmMjB1UT… > <https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F9531520…> > > Meeting ID: 953 1520 0315 > Passcode: 143755 > One tap mobile > +16699009128,,95315200315# US (San Jose) > +12532158782,,95315200315# US (Tacoma) > > Dial by your location > +1 669 900 9128 US (San Jose) > +1 253 215 8782 US (Tacoma) > +1 346 248 7799 US (Houston) > +1 646 558 8656 US (New York) > +1 301 715 8592 US (Germantown) > +1 312 626 6799 US (Chicago) > 888 788 0099 US Toll-free > 877 853 5247 US Toll-free > Meeting ID: 953 1520 0315 > Find your local number: https://linaro-org.zoom.us/u/apL3hgti4 > <https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fu%2FapL3hgt…> > > Going (shebu.varghesekuriakose(a)arm.com > <mailto:shebu.varghesekuriakose@arm.com>)? *Yes > <https://www.google.com/calendar/event?action=RESPOND&eid=NHVvY2FxY2o4Njk3MW…>**- > **Maybe > <https://www.google.com/calendar/event?action=RESPOND&eid=NHVvY2FxY2o4Njk3MW…>**- > **No > <https://www.google.com/calendar/event?action=RESPOND&eid=NHVvY2FxY2o4Njk3MW…>*more > options » > <https://www.google.com/calendar/event?action=VIEW&eid=NHVvY2FxY2o4Njk3MWZkd…> > > Invitation from Google Calendar <https://www.google.com/calendar/> > > You are receiving this courtesy email at the account > shebu.varghesekuriakose(a)arm.com > <mailto:shebu.varghesekuriakose@arm.com> because you are an attendee > of this event. > > To stop receiving future updates for this event, decline this event. > Alternatively you can sign up for a Google account at > https://www.google.com/calendar/ and control your notification > settings for your entire calendar. > > Forwarding this invitation could allow any recipient to send a > response to the organizer and be added to the guest list, or invite > others regardless of their own invitation status, or to modify your > RSVP. Learn More > <https://support.google.com/calendar/answer/37135#forwarding>. > >

5 years, 9 months

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Re: [mbed-tls] Questions about PSA Crypto API and mbed TLS

by François Beerten

Hi, Thank you Gilles for the detailed reply. Do you prefer that discussion about PSA Crypto API spec go on mailing list instead of here ? Is there some room for evolution or is the spec already in a frozen released state ? For new algorithms, it's of course preferable that they're defined in the spec itself. But does the mbedtls project want to supports all algorithms that will be used with PSA Crypto API ? For pure ED25519 and ED448 with scattered data, there's one big gotcha. You need to generate twice a hash that includes the message. Thus the implementation needs to be able to access the buffers of the message twice. With a piece of the message given only once as in the init-update-finish scheme, that does not work well. From reading the document on the PSA Crypto driver API, a transparent driver benefits from the management of keys done by the mbedtls implementation. But what benefit is there for a driver working with opaque keys which has to fully handle the protections and restrictions of keys internally ? Best, François. On 11/2/20 11:01 PM, Gilles Peskine via mbed-tls wrote: > Hello, > > Thank you for your interest in the PSA crypto API. > > On 28/10/2020 15:20, François Beerten via mbed-tls wrote: >> Hi everybody, >> >> After reading the PSA Crypto API specs (as on >> https://armmbed.github.io/mbed-crypto/html/overview/functionality.html) >> and looking at the mbed TLS library, a few questions came up. >> >> Is there some repository with the sources of the PSA Crypto API specs >> where one can follow the evolution and eventually send proposals and >> patches ? >> > The PSA specification drafts are not public. You can send feedback about > the PSA Crypto application and driver interfaces on the psa-crypto > mailing list (psa-crypto(a)lists.trustedfirmware.org, > https://lists.trustedfirmware.org/mailman/listinfo/psa-crypto). If you > prefer to send confidential feedback, you can email mbed-crypto(a)arm.com > (feedback at this address will only be discussed inside Arm). An issue > in the Mbed TLS repository will also reach PSA Crypto architects. > >> A note says "Hash suspend and resume is not defined for the SHA3 >> family of hash algorithms". Why are they not defined for SHA3 ? >> > The hash suspend/resume operations marshall the internal state of the > hash operation. They mimic an existing JavaCard API > (https://docs.oracle.com/javacard/3.0.5/api/javacard/security/InitializedMes…). > There is a de facto standard representation of the internal state for > common Merkle-Damgård constructions, which covers all the currently > defined hash algorithms except SHA3. If there's interest in this > functionality, we could standardize a representation for SHA3. > >> How can or should one add support in PSA Crypto AP for not yet defined >> algorithms (for example a KDF) ? >> > Answer from a PSA Crypto architect: preferably by requesting an encoding > for this KDF as a PSA_ALG_xxx value (as well as new > PSA_KEY_DERIVATION_INPUT_xxx values if applicable). If you can't do > that, use an encoding in the vendor range (most significant bit set). > > The world of key derivation functions is unfortunately messy: there are > many similar, but not functionally equivalent constructions (such as > hashing a secret together with a nonce, formatted in all kinds of > different ways). The set of KDF in PSA Crypto 1.0.0 was the minimum set > required for the TLS protocol. We expect 1.0.x updates to define more > KDF algorithms. > > Answer from an Mbed TLS maintainer: contributing an implementation would > be appreciated (but not required). > >> In multipart operations, can the user reuse the input buffers >> immediately after doing an 'update' (for example after >> psa_hash_update()) ? And can he reuse the input buffers immediately >> after some "setup" functions like psa_cipher_set_iv() or >> psa_aead_set_nonce() ? >> > Yes. PSA crypto API functions that take a buffer as a parameter never > take ownership of that buffer. Once the function returns, you can do > whatever you want with the buffer. > > The PSA specification even guarantees that you can use the same buffer, > or overlapping buffers, as inputs and outputs to the same function call. > However beware that the Mbed TLS implementation does not always support > such overlap (https://github.com/ARMmbed/mbedtls/issues/3266). > >> Do you plan to support (pure) ED25519 and ED448 only via >> psa_sign_message() and psa_verify_message() ? What about messages in >> multiple chunks ? >> > We plan to add a multi-part message signature interface, both for the > sake of pureEdDSA and suitable for Mbed TLS's restartable ECDSA. I > expect the design to be “what you'd expect” but I haven't yet verified > that there aren't any gotchas. > >> In psa_asymmetric_encrypt(), why is the salt provided explicitely. >> Shouldn't it be generated randomly internally when needed ? >> > Some applications use a fixed or deterministic salt which they check on > decryption. Note that this parameter is what PKCS#1 calls “label”. > >> With PSA Crypto API, you define a flexible API for cryptographic >> operations. Apparently, other providers could make their own >> implementation of PSA Crypto API. Will mbed TLS then be able to use >> those alternate PSA Crypto API implementations ? How would that work >> practically ? >> > The X.509 and TLS layer of Mbed TLS are currently designed to use the > mbedtls_xxx crypto API. We have already added partial support for the > psa_xxx crypto API (with MBEDTLS_USE_PSA_CRYPTO), however it is not yet > possible to fully decouple the X.509/TLS layers from the Mbed TLS crypto > implementation. (I think this is already possible for a small set of > cipher suites, but it isn't something that we've tried or currently > actively support.) Before this can happen, some Mbed TLS APIs need to > change, which will happen in 2021 with Mbed TLS 3.0. After that, we plan > to decouple the PSA crypto reference implementation (Mbed TLS's current > crypto implementation) from the X.509/TLS layer (which will remain “Mbed > TLS”). Our plans > (https://developer.trustedfirmware.org/w/mbed-tls/roadmap/) that far > into the future are still vague and may change. > > Note that for the most common case of wanting a different implementation > of cryptography, which is to leverage hardware such as accelerators and > secure elements, PSA is defining a driver interface which is currently > being implemented in Mbed TLS > (https://github.com/ARMmbed/mbedtls/blob/development/docs/proposed/psa-drive…). > The driver interface lets you combine mechanisms supported by your > hardware with Mbed TLS's implementation for mechanisms without hardware > support. >

5 years, 9 months

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Re: [mbed-tls] Write private key into buffer using encrypted PEM format

by Janos Follath

Hi Mate, I had a look and I couldn’t find such a feature implemented either. I don’t think that Mbed TLS supports that at the moment. Best regards, Janos From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of "Z.Máté via mbed-tls" <mbed-tls(a)lists.trustedfirmware.org> Reply to: "Z.Máté" <enleszekakalozkiraly(a)gmail.com> Date: Monday, 2 November 2020 at 21:01 To: "mbed-tls(a)lists.trustedfirmware.org" <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] Write private key into buffer using encrypted PEM format Dear mbedtls list members! Sorry if this is the second time I ask, I'm not sure the previous question is still on the list. I'm asking if there's a way to export a private key into a buffer in an encrypted format. So that mbedtls_pk_parse_key() has to be called with a password. In the example program key_app.c (I hope that's how it's called) I can see there are password encrypted PEM formatted keys. But how to generate one? For clarity, this is the type of header I'm looking for. —–BEGIN RSA PRIVATE KEY—– Proc-Type: 4,ENCRYPTED DEK-Info: AES-256-CBC,AB8E2B5B2D989271273F6730B6F9C687 ………………………………………………. ………………………………………………. ……………………………………… —–END RSA PRIVATE KEY—– I was only able to generate something like this by, using command line openssl. But I'd like a better solution, in code, using mbedtls. Yours Zombor Máté

5 years, 9 months

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Re: [mbed-tls] Questions about PSA Crypto API and mbed TLS

by Gilles Peskine

Hello, Thank you for your interest in the PSA crypto API. On 28/10/2020 15:20, François Beerten via mbed-tls wrote: > > Hi everybody, > > After reading the PSA Crypto API specs (as on > https://armmbed.github.io/mbed-crypto/html/overview/functionality.html) > and looking at the mbed TLS library, a few questions came up. > > Is there some repository with the sources of the PSA Crypto API specs > where one can follow the evolution and eventually send proposals and > patches ? > The PSA specification drafts are not public. You can send feedback about the PSA Crypto application and driver interfaces on the psa-crypto mailing list (psa-crypto(a)lists.trustedfirmware.org, https://lists.trustedfirmware.org/mailman/listinfo/psa-crypto). If you prefer to send confidential feedback, you can email mbed-crypto(a)arm.com (feedback at this address will only be discussed inside Arm). An issue in the Mbed TLS repository will also reach PSA Crypto architects. > A note says "Hash suspend and resume is not defined for the SHA3 > family of hash algorithms". Why are they not defined for SHA3 ? > The hash suspend/resume operations marshall the internal state of the hash operation. They mimic an existing JavaCard API (https://docs.oracle.com/javacard/3.0.5/api/javacard/security/InitializedMes…). There is a de facto standard representation of the internal state for common Merkle-Damgård constructions, which covers all the currently defined hash algorithms except SHA3. If there's interest in this functionality, we could standardize a representation for SHA3. > How can or should one add support in PSA Crypto AP for not yet defined > algorithms (for example a KDF) ? > Answer from a PSA Crypto architect: preferably by requesting an encoding for this KDF as a PSA_ALG_xxx value (as well as new PSA_KEY_DERIVATION_INPUT_xxx values if applicable). If you can't do that, use an encoding in the vendor range (most significant bit set). The world of key derivation functions is unfortunately messy: there are many similar, but not functionally equivalent constructions (such as hashing a secret together with a nonce, formatted in all kinds of different ways). The set of KDF in PSA Crypto 1.0.0 was the minimum set required for the TLS protocol. We expect 1.0.x updates to define more KDF algorithms. Answer from an Mbed TLS maintainer: contributing an implementation would be appreciated (but not required). > In multipart operations, can the user reuse the input buffers > immediately after doing an 'update' (for example after > psa_hash_update()) ? And can he reuse the input buffers immediately > after some "setup" functions like psa_cipher_set_iv() or > psa_aead_set_nonce() ? > Yes. PSA crypto API functions that take a buffer as a parameter never take ownership of that buffer. Once the function returns, you can do whatever you want with the buffer. The PSA specification even guarantees that you can use the same buffer, or overlapping buffers, as inputs and outputs to the same function call. However beware that the Mbed TLS implementation does not always support such overlap (https://github.com/ARMmbed/mbedtls/issues/3266). > Do you plan to support (pure) ED25519 and ED448 only via > psa_sign_message() and psa_verify_message() ? What about messages in > multiple chunks ? > We plan to add a multi-part message signature interface, both for the sake of pureEdDSA and suitable for Mbed TLS's restartable ECDSA. I expect the design to be “what you'd expect” but I haven't yet verified that there aren't any gotchas. > In psa_asymmetric_encrypt(), why is the salt provided explicitely. > Shouldn't it be generated randomly internally when needed ? > Some applications use a fixed or deterministic salt which they check on decryption. Note that this parameter is what PKCS#1 calls “label”. > With PSA Crypto API, you define a flexible API for cryptographic > operations. Apparently, other providers could make their own > implementation of PSA Crypto API. Will mbed TLS then be able to use > those alternate PSA Crypto API implementations ? How would that work > practically ? > The X.509 and TLS layer of Mbed TLS are currently designed to use the mbedtls_xxx crypto API. We have already added partial support for the psa_xxx crypto API (with MBEDTLS_USE_PSA_CRYPTO), however it is not yet possible to fully decouple the X.509/TLS layers from the Mbed TLS crypto implementation. (I think this is already possible for a small set of cipher suites, but it isn't something that we've tried or currently actively support.) Before this can happen, some Mbed TLS APIs need to change, which will happen in 2021 with Mbed TLS 3.0. After that, we plan to decouple the PSA crypto reference implementation (Mbed TLS's current crypto implementation) from the X.509/TLS layer (which will remain “Mbed TLS”). Our plans (https://developer.trustedfirmware.org/w/mbed-tls/roadmap/) that far into the future are still vague and may change. Note that for the most common case of wanting a different implementation of cryptography, which is to leverage hardware such as accelerators and secure elements, PSA is defining a driver interface which is currently being implemented in Mbed TLS (https://github.com/ARMmbed/mbedtls/blob/development/docs/proposed/psa-drive…). The driver interface lets you combine mechanisms supported by your hardware with Mbed TLS's implementation for mechanisms without hardware support. -- Gilles Peskine PSA Cryptography architect and Mbed TLS developer > Thank you for your attention, > > François. > > >

5 years, 9 months

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Write private key into buffer using encrypted PEM format

by Z.Máté

Dear mbedtls list members! Sorry if this is the second time I ask, I'm not sure the previous question is still on the list. I'm asking if there's a way to export a private key into a buffer in an encrypted format. So that mbedtls_pk_parse_key() has to be called with a password. In the example program key_app.c (I hope that's how it's called) I can see there are password encrypted PEM formatted keys. But how to generate one? For clarity, this is the type of header I'm looking for. —–BEGIN RSA PRIVATE KEY—– Proc-Type: 4,ENCRYPTED DEK-Info: AES-256-CBC,AB8E2B5B2D989271273F6730B6F9C687 ………………………………………………. ………………………………………………. ……………………………………… —–END RSA PRIVATE KEY—– I was only able to generate something like this by, using command line openssl. But I'd like a better solution, in code, using mbedtls. Yours Zombor Máté

5 years, 9 months

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Mbed TLS Virtual Workshop Tomorrow

by Shebu Varghese Kuriakose

Hi All, Gentle reminder about the Mbed TLS workshop tomorrow (Tuesday, November 3rd) from 2 to 6pm GMT. See agenda and zoom link here - https://www.trustedfirmware.org/meetings/mbed-tls-workshop/ Thanks, Shebu -----Original Appointment----- From: Trusted Firmware Public Meetings <linaro.org_havjv2figrh5egaiurb229pd8c(a)group.calendar.google.com> Sent: Friday, October 23, 2020 12:32 AM To: Trusted Firmware Public Meetings; Shebu Varghese Kuriakose; mbed-tls(a)lists.trustedfirmware.org; Don Harbin; psa-crypto(a)lists.trustedfirmware.org; Dave Rodgman Subject: Mbed TLS Virtual Workshop When: Tuesday, November 3, 2020 2:00 PM-6:00 PM (UTC+00:00) Dublin, Edinburgh, Lisbon, London. Where: Zoom: https://linaro-org.zoom.us/j/95315200315?pwd=ZDJGc1BZMHZLV29DTmpGUllmMjB1UT… You have been invited to the following event. Mbed TLS Virtual Workshop When Tue Nov 3, 2020 7am – 11am Mountain Standard Time - Phoenix Where Zoom: https://linaro-org.zoom.us/j/95315200315?pwd=ZDJGc1BZMHZLV29DTmpGUllmMjB1UT… (map<https://www.google.com/maps/search/Zoom:+https:%2F%2Flinaro-org.zoom.us%2Fj…>) Calendar shebu.varghesekuriakose(a)arm.com<mailto:shebu.varghesekuriakose@arm.com> Who • Don Harbin - creator • shebu.varghesekuriakose(a)arm.com<mailto:shebu.varghesekuriakose@arm.com> • mbed-tls(a)lists.trustedfirmware.org<mailto:mbed-tls@lists.trustedfirmware.org> • psa-crypto(a)lists.trustedfirmware.org<mailto:psa-crypto@lists.trustedfirmware.org> • dave.rodgman(a)arm.com<mailto:dave.rodgman@arm.com> more details »<https://www.google.com/calendar/event?action=VIEW&eid=NHVvY2FxY2o4Njk3MWZkd…> Hi, Trustedfirmware.org community project would like to invite you to the Mbed TLS Virtual Workshop. The purpose of the workshop is to bring together the Mbed TLS community including maintainers, contributors and users to discuss * The future direction of the project and * Ways to improve community collaboration Here is the agenda for the workshop. Topic Time (in GMT) Welcome 2.00 - 2.10pm Constant-time code 2.10 – 2.30pm Processes - how does work get scheduled? 2.30 – 2.50pm PSA Crypto APIs 2.50 – 3.20pm PSA Crypto for Silicon Labs Wireless MCUs - Why, What, Where and When 3.20 – 3.50pm Break Roadmap, TLS1.3 Update 4.10 – 4.30pm Mbed TLS 3.0 Plans, Scope 4.30 – 5.00pm How do I contribute my first review and be an effective Mbed TLS reviewer 5.00 – 5.30pm Regards, Don Harbin Trusted Firmware Community Manager ==============Zoom details below:==================== Trusted Firmware is inviting you to a scheduled Zoom meeting. Topic: Mbed TLS Virtual Workshop Time: Nov 3, 2020 02:00 PM Greenwich Mean Time Join Zoom Meeting https://linaro-org.zoom.us/j/95315200315?pwd=ZDJGc1BZMHZLV29DTmpGUllmMjB1UT…<https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F9531520…> Meeting ID: 953 1520 0315 Passcode: 143755 One tap mobile +16699009128,,95315200315# US (San Jose) +12532158782,,95315200315# US (Tacoma) Dial by your location +1 669 900 9128 US (San Jose) +1 253 215 8782 US (Tacoma) +1 346 248 7799 US (Houston) +1 646 558 8656 US (New York) +1 301 715 8592 US (Germantown) +1 312 626 6799 US (Chicago) 888 788 0099 US Toll-free 877 853 5247 US Toll-free Meeting ID: 953 1520 0315 Find your local number: https://linaro-org.zoom.us/u/apL3hgti4<https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fu%2FapL3hgt…> Going (shebu.varghesekuriakose(a)arm.com<mailto:shebu.varghesekuriakose@arm.com>)? Yes<https://www.google.com/calendar/event?action=RESPOND&eid=NHVvY2FxY2o4Njk3MW…> - Maybe<https://www.google.com/calendar/event?action=RESPOND&eid=NHVvY2FxY2o4Njk3MW…> - No<https://www.google.com/calendar/event?action=RESPOND&eid=NHVvY2FxY2o4Njk3MW…> more options »<https://www.google.com/calendar/event?action=VIEW&eid=NHVvY2FxY2o4Njk3MWZkd…> Invitation from Google Calendar<https://www.google.com/calendar/> You are receiving this courtesy email at the account shebu.varghesekuriakose(a)arm.com<mailto:shebu.varghesekuriakose@arm.com> because you are an attendee of this event. To stop receiving future updates for this event, decline this event. Alternatively you can sign up for a Google account at https://www.google.com/calendar/ and control your notification settings for your entire calendar. Forwarding this invitation could allow any recipient to send a response to the organizer and be added to the guest list, or invite others regardless of their own invitation status, or to modify your RSVP. Learn More<https://support.google.com/calendar/answer/37135#forwarding>.

5 years, 9 months

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Exporting private key in encrypted PEM format

by Z.Máté

Dear mbedtls list members! Is there a way to write a private key into a buffer, in PEM format, by using a password for encryption? Mbedtls is able to parse encrypted PEM files so can I write one? I couldn't really find any info regarding it, only an older, unfinished github issue ... Yours Zombor Máté

5 years, 9 months

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Re: [mbed-tls] Questions about PSA Crypto API and mbed TLS

by Levi Schuck

Hello François, The following is my understanding, I am not a maintainer but a user of mbedtls. My response below only addresses a few of your questions. PSA appears to be bound to what mbedtls currently supports, this does not include Ed25519 or Ed448 at this time. A pull request is currently open for this feature development https://github.com/ARMmbed/mbedtls/pull/3245 Further development may be necessary to include those in PSA. The only implementation of PSA that I know of is one that wraps around mbedtls. Best, Levi On Wed, Oct 28, 2020 at 9:20 AM François Beerten via mbed-tls < mbed-tls(a)lists.trustedfirmware.org> wrote: > Hi everybody, > > After reading the PSA Crypto API specs (as on > https://armmbed.github.io/mbed-crypto/html/overview/functionality.html) > and looking at the mbed TLS library, a few questions came up. > > Is there some repository with the sources of the PSA Crypto API specs > where one can follow the evolution and eventually send proposals and > patches ? > > A note says "Hash suspend and resume is not defined for the SHA3 family of > hash algorithms". Why are they not defined for SHA3 ? > > How can or should one add support in PSA Crypto AP for not yet defined > algorithms (for example a KDF) ? > > In multipart operations, can the user reuse the input buffers immediately > after doing an 'update' (for example after psa_hash_update()) ? And can > he reuse the input buffers immediately after some "setup" functions like > psa_cipher_set_iv() or psa_aead_set_nonce() ? > > Do you plan to support (pure) ED25519 and ED448 only via > psa_sign_message() and psa_verify_message() ? What about messages in > multiple chunks ? > > In psa_asymmetric_encrypt(), why is the salt provided explicitely. > Shouldn't it be generated randomly internally when needed ? > > With PSA Crypto API, you define a flexible API for cryptographic > operations. Apparently, other providers could make their own implementation > of PSA Crypto API. Will mbed TLS then be able to use those alternate PSA > Crypto API implementations ? How would that work practically ? > > Thank you for your attention, > > François. > > > -- > mbed-tls mailing list > mbed-tls(a)lists.trustedfirmware.org > https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls >

5 years, 9 months

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JITR is not working in case CA is created using BouncyCastle in mbedtls

by 박현웅

I make a CA certificate for JITR using BouncyCastle lib in the android app as the below example And a device certificate is generated by this certificate in mbed_tls. At this time, JITR is not working. Namely, a device certificate is not registered in AWS. But In the case of making a ca certificate using OPENSSL, JITR works normally. Below is CA certificate based BouncyCastle lib. -----BEGIN CERTIFICATE----- MIIB8jCCAZegAwIBAgIVAK0ct2HFXVdS/k2NblxYGoxyuabfMAoGCCqGSM49BAMC MDIxCzAJBgNVBAYTAktSMRAwDgYDVQQKDAdUcnVzdEZpMREwDwYDVQQDDAhtZWdh em9uZTAeFw0yMDEwMjcwMDAwMDBaFw0zNTAxMDEwMDAwMDBaMDIxCzAJBgNVBAYT AktSMRAwDgYDVQQKDAdUcnVzdEZpMREwDwYDVQQDDAhtZWdhem9uZTBZMBMGByqG SM49AgEGCCqGSM49AwEHA0IABEknYdqI3CdVlmMkTmqKS63HnHc5PbyBff1RokGG 6NE6z31ilA8Yt2fGFHIln1kQtx//6stBA1bIqiqsSo8wad6jgYkwgYYwHQYDVR0O BBYEFBHaQtHvagaDPkpWxQurErTekm2cMB8GA1UdIwQYMBaAFBHaQtHvagaDPkpW xQurErTekm2cMA8GA1UdEwEB/wQFMAMBAf8wEQYJYIZIAYb4QgEBBAQDAgAHMAsG A1UdDwQEAwIBBjATBgNVHSUEDDAKBggrBgEFBQcDAzAKBggqhkjOPQQDAgNJADBG AiEA9HSXn3FpGUYLagsI3qaHz3VicMSuADUz/QBYEKN9STkCIQC+8BX/TPADpPOy ClmBIkjxdDt0Fh7HTDn9UwBUxYA3/g== -----END CERTIFICATE----- -----BEGIN EC PRIVATE KEY----- MIGTAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBHkwdwIBAQQgU9pUZUfplZyhC+mH Pt8pthLItdpbJ+Qy47r7gJKTNvCgCgYIKoZIzj0DAQehRANCAARJJ2HaiNwnVZZj JE5qikutx5x3OT28gX39UaJBhujROs99YpQPGLdnxhRyJZ9ZELcf/+rLQQNWyKoq rEqPMGne -----END EC PRIVATE KEY----- BRs. Hyunung Park

5 years, 9 months

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Questions about PSA Crypto API and mbed TLS

by François Beerten

Hi everybody, After reading the PSA Crypto API specs (as on https://armmbed.github.io/mbed-crypto/html/overview/functionality.html) and looking at the mbed TLS library, a few questions came up. Is there some repository with the sources of the PSA Crypto API specs where one can follow the evolution and eventually send proposals and patches ? A note says "Hash suspend and resume is not defined for the SHA3 family of hash algorithms". Why are they not defined for SHA3 ? How can or should one add support in PSA Crypto AP for not yet defined algorithms (for example a KDF) ? In multipart operations, can the user reuse the input buffers immediately after doing an 'update' (for example after psa_hash_update()) ? And can he reuse the input buffers immediately after some "setup" functions like psa_cipher_set_iv() or psa_aead_set_nonce() ? Do you plan to support (pure) ED25519 and ED448 only via psa_sign_message() and psa_verify_message() ? What about messages in multiple chunks ? In psa_asymmetric_encrypt(), why is the salt provided explicitely. Shouldn't it be generated randomly internally when needed ? With PSA Crypto API, you define a flexible API for cryptographic operations. Apparently, other providers could make their own implementation of PSA Crypto API. Will mbed TLS then be able to use those alternate PSA Crypto API implementations ? How would that work practically ? Thank you for your attention, François.

5 years, 9 months

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Re: [mbed-tls] Availability of 2.16.7 in download archive

by Janos Follath

Hi Frank, The issue exists because you are downloading a tag and not the release. The 2.16.8 release is available here: https://github.com/ARMmbed/mbedtls/archive/v2.16.8.tar.gz Best regards, Janos On 28/10/2020, 12:15, "mbed-tls on behalf of Frank Bergmann via mbed-tls" <mbed-tls-bounces(a)lists.trustedfirmware.org on behalf of mbed-tls(a)lists.trustedfirmware.org> wrote: Hi Gilles, I noticed that the "double name" does still exist in some archive files: $ wget -q -O - https://github.com/ARMmbed/mbedtls/archive/mbedtls-2.16.8.tar.gz|tar tzf -|head mbedtls-mbedtls-2.16.8/ mbedtls-mbedtls-2.16.8/.github/ mbedtls-mbedtls-2.16.8/.github/issue_template.md mbedtls-mbedtls-2.16.8/.github/pull_request_template.md mbedtls-mbedtls-2.16.8/.gitignore mbedtls-mbedtls-2.16.8/.globalrc mbedtls-mbedtls-2.16.8/.pylintrc mbedtls-mbedtls-2.16.8/.travis.yml mbedtls-mbedtls-2.16.8/CMakeLists.txt mbedtls-mbedtls-2.16.8/CONTRIBUTING.md cheers, Frank On Tue, Aug 04, 2020 at 09:18:56PM +0000, Gilles Peskine via mbed-tls wrote: [...] > The naming with mbedtls-mbedtls- must be a bug in our release script. [...] -- Frank Bergmann, Pödinghauser Str. 5, D-32051 Herford, Tel. +49-5221-9249753 SAP Hybris & Linux LPIC-3, E-Mail tx2014(a)tuxad.de, USt-IdNr DE237314606 http://tdyn.de/freel -- Redirect to profile at freelancermap http://www.gulp.de/freiberufler/2HNKY2YHW.html -- Profile at GULP -- mbed-tls mailing list mbed-tls(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls

5 years, 9 months

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Re: [mbed-tls] Availability of 2.16.7 in download archive

by Frank Bergmann

Hi Gilles, I noticed that the "double name" does still exist in some archive files: $ wget -q -O - https://github.com/ARMmbed/mbedtls/archive/mbedtls-2.16.8.tar.gz|tar tzf -|head mbedtls-mbedtls-2.16.8/ mbedtls-mbedtls-2.16.8/.github/ mbedtls-mbedtls-2.16.8/.github/issue_template.md mbedtls-mbedtls-2.16.8/.github/pull_request_template.md mbedtls-mbedtls-2.16.8/.gitignore mbedtls-mbedtls-2.16.8/.globalrc mbedtls-mbedtls-2.16.8/.pylintrc mbedtls-mbedtls-2.16.8/.travis.yml mbedtls-mbedtls-2.16.8/CMakeLists.txt mbedtls-mbedtls-2.16.8/CONTRIBUTING.md cheers, Frank On Tue, Aug 04, 2020 at 09:18:56PM +0000, Gilles Peskine via mbed-tls wrote: [...] > The naming with mbedtls-mbedtls- must be a bug in our release script. [...] -- Frank Bergmann, Pödinghauser Str. 5, D-32051 Herford, Tel. +49-5221-9249753 SAP Hybris & Linux LPIC-3, E-Mail tx2014(a)tuxad.de, USt-IdNr DE237314606 http://tdyn.de/freel -- Redirect to profile at freelancermap http://www.gulp.de/freiberufler/2HNKY2YHW.html -- Profile at GULP

5 years, 9 months

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Re: [mbed-tls] About mbedtls CVE

by Janos Follath

Hi Sawyer, Thank you for your interest in Mbed TLS. Currently the status of these CVE’s is: - CVE-2020-16150 has been fixed in the latest Mbed TLS release - CVE-2018-1000520 is not a security issue, it had been studied and rejected - CVE-2016-3739 is a vulnerability in an application using Mbed TLS but not in Mbed TLS itself, also it too had been fixed. Does this answer your question? (Also, I would like to make a minor clarification: we are not Arm Support. As far as I know Arm does not offer official support for Mbed TLS. Arm only contributes engineers to the Mbed TLS project, and at the moment these engineers are the maintainers of Mbed TLS. We are on this mailing list and try to answer questions, but we are not doing that as official support provided by Arm, but as members of the community. Mbed TLS is supported by the community and this mailing list is indeed the right place to get that support. I apologise for the nitpick, I just wanted to make sure that we are not giving the wrong impressions.) Best regards, Janos (Mbed TLS developer) From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of Sawyer Liu via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> Reply to: Sawyer Liu <sawyer.liu(a)nxp.com> Date: Wednesday, 28 October 2020 at 01:59 To: "mbed-tls(a)lists.trustedfirmware.org" <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] About mbedtls CVE Hello ARM Support, About below CVEs, any update? Thanks. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16150<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcve.mitre…> https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000520 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3739 Best Regards Sawyer Liu Microcontrollers, NXP Semiconductors

5 years, 9 months

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Re: [mbed-tls] JITR in mbedtls

by 박현웅

From: 박현웅 <hupark(a)ictk.com> Sent: Wednesday, October 28, 2020 6:21 PM To: 'mbed-tls(a)lists.trustedfirmware.org.' <mbed-tls(a)lists.trustedfirmware.org.> Subject: JITR in mbedtls Hi I make a certificate using BouncyCastle lib in android app as the below. JITR is not working. Namely a device certificate is not registered in aws iot. In case of making ca certificate using openssl, JITR works normally. Could you please help me? -----BEGIN CERTIFICATE----- MIIB8jCCAZegAwIBAgIVAK0ct2HFXVdS/k2NblxYGoxyuabfMAoGCCqGSM49BAMC MDIxCzAJBgNVBAYTAktSMRAwDgYDVQQKDAdUcnVzdEZpMREwDwYDVQQDDAhtZWdh em9uZTAeFw0yMDEwMjcwMDAwMDBaFw0zNTAxMDEwMDAwMDBaMDIxCzAJBgNVBAYT AktSMRAwDgYDVQQKDAdUcnVzdEZpMREwDwYDVQQDDAhtZWdhem9uZTBZMBMGByqG SM49AgEGCCqGSM49AwEHA0IABEknYdqI3CdVlmMkTmqKS63HnHc5PbyBff1RokGG 6NE6z31ilA8Yt2fGFHIln1kQtx//6stBA1bIqiqsSo8wad6jgYkwgYYwHQYDVR0O BBYEFBHaQtHvagaDPkpWxQurErTekm2cMB8GA1UdIwQYMBaAFBHaQtHvagaDPkpW xQurErTekm2cMA8GA1UdEwEB/wQFMAMBAf8wEQYJYIZIAYb4QgEBBAQDAgAHMAsG A1UdDwQEAwIBBjATBgNVHSUEDDAKBggrBgEFBQcDAzAKBggqhkjOPQQDAgNJADBG AiEA9HSXn3FpGUYLagsI3qaHz3VicMSuADUz/QBYEKN9STkCIQC+8BX/TPADpPOy ClmBIkjxdDt0Fh7HTDn9UwBUxYA3/g== -----END CERTIFICATE----- -----BEGIN EC PRIVATE KEY----- MIGTAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBHkwdwIBAQQgU9pUZUfplZyhC+mH Pt8pthLItdpbJ+Qy47r7gJKTNvCgCgYIKoZIzj0DAQehRANCAARJJ2HaiNwnVZZj JE5qikutx5x3OT28gX39UaJBhujROs99YpQPGLdnxhRyJZ9ZELcf/+rLQQNWyKoq rEqPMGne -----END EC PRIVATE KEY----- BRs. Hyunung Park

5 years, 9 months

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About mbedtls CVE

by Sawyer Liu

Hello ARM Support, About below CVEs, any update? Thanks. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16150<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcve.mitre…> https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000520 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3739 Best Regards Sawyer Liu Microcontrollers, NXP Semiconductors

5 years, 9 months

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Re: [mbed-tls] Availability of GPLv2 releases in the future

by Gilles Peskine

Hi Fabian, Unfortunately https://tls.mbed.org/how-to-get is out of date. As indicated on https://tls.mbed.org/download, newer releases (since 2.17) are distributed under Apache license only. Only the long-time support branches (2.7.x and 2.16.x) still have GPL releases. -- Gilles Peskine Mbed TLS developer On 20/10/2020 14:19, Fabian Keil via mbed-tls wrote: > Hi, > > tls.mbed.org currently sends mixed signals regarding > the license of future MbedTLS releases. > > Quoting https://tls.mbed.org/download: > | In packaged form, mbed TLS 2.1.0 to mbed TLS 2.16 are > | available in both an Apache 2.0 licensed version (our > | primary open source license) and in a GPL 2.0 licensed version. > | > | Newer versions will be available under the Apache 2.0 license. > > Quoting https://tls.mbed.org/how-to-get: > | All the current versions of the mbed TLS library are distributed > | under the Apache 2.0 license and available from our Download area. > | In addition there are packaged versions of the mbed TLS library > | that are distributed with the GNU Public License Version 2.0 (GPL v2.0). > | > | The Apache-licensed and GPL-licensed versions of mbed TLS are > | identical in source code (with the exception of the license > | headers at the top of files). > | > | We plan to keep both licensed versions around. > > Can anyone estimate when "newer releases" will no longer > be dual licensed? > > We recently added MbedTLS support for Privoxy and a > MbedTLS license switch from dual license to Apache 2.0 > complicates the license terms. > > Thanks > Fabian >

5 years, 9 months

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Re: [mbed-tls] Clarification regarding the mbedtls_pk_context object and the PEM format, an a question about the example TLS server

by Gilles Peskine

Hi Máté, On 26/10/2020 12:04, Z.Máté via mbed-tls wrote: > Dear mbedtls mailing list members! > > I hope you recieve my message now, previously I had problems posting > to this list. :( > > My first question is actually about the PEM format. As far as I'm > aware the PEM format either contains the Private key (signalled by the > ---- BEGIN PRIVATE KEY ---- header) or a public key (---- BEGIN PUBLIC > KEY -----). In my application I have to work on an app that stores key > pairs in a special, secure storage solution (Secure Storage of OPTEE > if you've heard about it). I decided to export the keys in PEM format, > so that reading and handling them is equal to moving a large string > buffer around. Using the PEM format, is there a way to store both > private and public keys in the same "file"? Does mbedtls allow for > such a solution (does such a solution even exist?). There are actually several PEM formats. Some private key formats actually store both the private key and the public key, while others only store the private key. However, it is always possible to calculate the public key from the private key. So if you want to have the whole key pair, just write the private key in any format. If you have a private key file, you can extract the public key with the Mbed TLS sample program key_app_writer (untested command line, typed directly into my mail client): programs/pkey/key_app_writer mode=private filename=my_private_key.pem output_mode=public output_file=my_public_key.pem or with OpenSSL: openssl pkey -in my_private_key.pem -pubout -out my_public_key.pem > > If not, is there a simple way to get the public key from a private key > object? Does the mbedtls_pk_context, (that parsed up with a private > key) contain the information needed to export the public key into a > PEM buffer? As far as I know mbedtls allows for exporting the private > key and the public key with the functions mbedtls_write_key_pem and > ...write_pubkey_pem (or something along those lines) does that mean I > can only export one at a time and there's no way to save the > information for both into one PEM buffer? > > If there's a way to save both private and public keys into one PEM > file, do I have to parse the private key and public key into separate > objects then? With parse_key and parse_pubkey? This isn't really a > problem just clarifying. Once you have an mbedtls_pk_context, if you want to export both keys to a file, use mbedtls_write_key_pem(). If you want to have a separate file that only contains the public key, call mbedtls_write_pubkey_pem() on the same mbedtls_pk_context. > > If you can point me to an actually good description of the PEM format > and what CAN be stored inside of it, I'd be very grateful! :) PEM is just an encoding: base64 data between a header and footer. The base64-encoded data can have several different formats depending on the header. It can represent a private key (several formats depending on the header), a public key or a certificate. A complete description is spread across about half a dozen RFC. Fortunately, I don't think you need to dig into those. > > I also have a question regarding the example SSL server program. In > it, the server needs a private key and a certificate for obvious > reasons. It also loads a certificate and as far as I know, the > certificate has to be tied to a known CA for it to be valid. > > I would like to test the program with a self generated key pair, do I > need to change the Certificate and CAs to a new one as well? To > authenticate the new keypair? Does the mbedtls ssl_client1 example > program work with self signed certs? Or do I need to take care of the > CA validation myself (that would probably beyond the scope of the > project I'm working on). The sample program ssl_server does not check the client certificate. The test program ssl_server2 can check the client certificate: pass the command line options "auth_mode=required ca_file=my_ca.crt". If you have a self-signed client certificate, you can pass it as the ca_file. -- Gilles Peskine Mbed TLS developer > > Thank you in advance! > > Yours truly, > Máté Zombor >

5 years, 9 months

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Clarification regarding the mbedtls_pk_context object and the PEM format, an a question about the example TLS server

by Z.Máté

Dear mbedtls mailing list members! I hope you recieve my message now, previously I had problems posting to this list. :( My first question is actually about the PEM format. As far as I'm aware the PEM format either contains the Private key (signalled by the ---- BEGIN PRIVATE KEY ---- header) or a public key (---- BEGIN PUBLIC KEY -----). In my application I have to work on an app that stores key pairs in a special, secure storage solution (Secure Storage of OPTEE if you've heard about it). I decided to export the keys in PEM format, so that reading and handling them is equal to moving a large string buffer around. Using the PEM format, is there a way to store both private and public keys in the same "file"? Does mbedtls allow for such a solution (does such a solution even exist?). If not, is there a simple way to get the public key from a private key object? Does the mbedtls_pk_context, (that parsed up with a private key) contain the information needed to export the public key into a PEM buffer? As far as I know mbedtls allows for exporting the private key and the public key with the functions mbedtls_write_key_pem and ...write_pubkey_pem (or something along those lines) does that mean I can only export one at a time and there's no way to save the information for both into one PEM buffer? If there's a way to save both private and public keys into one PEM file, do I have to parse the private key and public key into separate objects then? With parse_key and parse_pubkey? This isn't really a problem just clarifying. If you can point me to an actually good description of the PEM format and what CAN be stored inside of it, I'd be very grateful! :) I also have a question regarding the example SSL server program. In it, the server needs a private key and a certificate for obvious reasons. It also loads a certificate and as far as I know, the certificate has to be tied to a known CA for it to be valid. I would like to test the program with a self generated key pair, do I need to change the Certificate and CAs to a new one as well? To authenticate the new keypair? Does the mbedtls ssl_client1 example program work with self signed certs? Or do I need to take care of the CA validation myself (that would probably beyond the scope of the project I'm working on). Thank you in advance! Yours truly, Máté Zombor

5 years, 9 months

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Invitation: Mbed TLS Virtual Workshop @ Tue Nov 3, 2020 7am - 11am (MST) (mbed-tls@lists.trustedfirmware.org)

by Don Harbin

You have been invited to the following event. Title: Mbed TLS Virtual Workshop Hi,Trustedfirmware.org community project would like to invite you to the Mbed TLS Virtual Workshop. The purpose of the workshop is to bring together the Mbed TLS community including maintainers, contributors and users to discussThe future direction of the project andWays to improve community collaborationHere is the agenda for the workshop.Topic                                                                         Time (in GMT)Welcome                                                                   2.00 - 2.10pmConstant-time code                                                2.10 – 2.30pmProcesses - how does work get scheduled?      2.30 – 2.50pmPSA Crypto APIs                                                     2.50 – 3.20pmPSA Crypto for Silicon Labs Wireless         MCUs - Why, What, Where and When          3.20 – 3.50pmBreak                                                                          Roadmap, TLS1.3 Update                                      4.10 – 4.30pmMbed TLS 3.0 Plans, Scope                                   4.30 – 5.00pmHow do I contribute my first review         and be an effective Mbed TLS reviewer      5.00 – 5.30pmRegards,Don Harbin Trusted Firmware Community Manager==============Zoom details below:====================Trusted Firmware is inviting you to a scheduled Zoom meeting.Topic: Mbed TLS Virtual WorkshopTime: Nov 3, 2020 02:00 PM Greenwich Mean TimeJoin Zoom Meetinghttps://linaro-org.zoom.us/j/95315200315?pwd=ZDJGc1BZMHZLV29DTmpGUllmMjB1UT09Meeting ID: 953 1520 0315Passcode: 143755One tap mobile+16699009128,,95315200315# US (San Jose)+12532158782,,95315200315# US (Tacoma)Dial by your location        +1 669 900 9128 US (San Jose)        +1 253 215 8782 US (Tacoma)        +1 346 248 7799 US (Houston)        +1 646 558 8656 US (New York)        +1 301 715 8592 US (Germantown)        +1 312 626 6799 US (Chicago)        888 788 0099 US Toll-free        877 853 5247 US Toll-freeMeeting ID: 953 1520 0315Find your local number: https://linaro-org.zoom.us/u/apL3hgti4 When: Tue Nov 3, 2020 7am – 11am Mountain Standard Time - Phoenix Where: Zoom: https://linaro-org.zoom.us/j/95315200315?pwd=ZDJGc1BZMHZLV29DTmpGUllmMjB1UT… Calendar: mbed-tls(a)lists.trustedfirmware.org Who: * Don Harbin - creator * shebu.varghesekuriakose(a)arm.com * mbed-tls(a)lists.trustedfirmware.org * psa-crypto(a)lists.trustedfirmware.org * dave.rodgman(a)arm.com Event details: https://www.google.com/calendar/event?action=VIEW&eid=NHVvY2FxY2o4Njk3MWZkd… Invitation from Google Calendar: https://www.google.com/calendar/ You are receiving this courtesy email at the account mbed-tls(a)lists.trustedfirmware.org because you are an attendee of this event. To stop receiving future updates for this event, decline this event. Alternatively you can sign up for a Google account at https://www.google.com/calendar/ and control your notification settings for your entire calendar. Forwarding this invitation could allow any recipient to send a response to the organizer and be added to the guest list, or invite others regardless of their own invitation status, or to modify your RSVP. Learn more at https://support.google.com/calendar/answer/37135#forwarding

5 years, 9 months

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Availability of GPLv2 releases in the future

by Fabian Keil

Hi, tls.mbed.org currently sends mixed signals regarding the license of future MbedTLS releases. Quoting https://tls.mbed.org/download: | In packaged form, mbed TLS 2.1.0 to mbed TLS 2.16 are | available in both an Apache 2.0 licensed version (our | primary open source license) and in a GPL 2.0 licensed version. | | Newer versions will be available under the Apache 2.0 license. Quoting https://tls.mbed.org/how-to-get: | All the current versions of the mbed TLS library are distributed | under the Apache 2.0 license and available from our Download area. | In addition there are packaged versions of the mbed TLS library | that are distributed with the GNU Public License Version 2.0 (GPL v2.0). | | The Apache-licensed and GPL-licensed versions of mbed TLS are | identical in source code (with the exception of the license | headers at the top of files). | | We plan to keep both licensed versions around. Can anyone estimate when "newer releases" will no longer be dual licensed? We recently added MbedTLS support for Privoxy and a MbedTLS license switch from dual license to Apache 2.0 complicates the license terms. Thanks Fabian

5 years, 9 months

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Fwd: Working on TLS handshake record fragmentation (#1840)

by Omer Shapira

Hi Dave, Thanks for your reply. The particular reasons for bringing up 2.7 and 2.16 first is that my employer is currently using 2.7 and would prefer using a small increment. Having said that, if adding features to LTS is not advisable (especially given that 2.7 has less than 6 months of projected life), I think I can present the arguments against using the 2.7. Additional consideration is the timing. My employer needs fragmentation support as soon as possible, with the intent of running it on a desktop environment. Historically, when the engineers are able to provide my employer with what is needed now, they are allowed more time for incremental improvements. The third consideration involves the MPS project by Hanno Becker. I've been collaborating with Hanno, and with Hannes Tschofenig and Thomas Fosetti on the project of adding QUIC support to mbedTLS. This goal depends on TLS 1.3 support (Hannes has written a prototype, which I was able to add QUIC in an internal version), and on MPS. I would like to avoid putting a duplicate effort into non-MPS fragmentation support. Unfortunately, if I want to meet the timing requirements of my employer, I will not be able to use MPS, since it needs more maturing. Because of the above considerations, I would like to suggest the following plan of actions: As the first step, I would like to add the MVP (minimal viable product) fragmentation to the development version. The MVP takes the following assumptions: 1. The RAM footprint is not a concern for the MVP (my employer is going to run it in the desktop environment). 2. Unification of the fragmentation between TLS and DTLS is not a concern for the MVP 3. LTS is not a concern for the MVP (potentially not at all) Because of the above simplifying assumptions, I believe that the change can be small and focused. I think I can have code ready for review in a couple of weeks. As the second step, I would like to put my effort into helping Hanno Becker with his MPS system. Once sufficiently mature, the MPS will supersede the MVP fragmentation, and will open the doors for adding support for QUIC. The simplifying assumptions 1. (RAM) and 2. (TLS <=> DTLS) will be addressed by MPS. Addressing the last assumption may not be required. What are your thoughts? On Wed, Oct 14, 2020 at 10:28 AM Dave Rodgman <dave.rodgman(a)arm.com> wrote: > Hi Omer, > > > > Thanks for offering to help us with this feature. > > > > Normally, we wouldn’t add new features directly to an older branch, for a > few reasons. 2.7 is quite old and is in fact only guaranteed to be > supported until Feb 21, so it’s not the ideal place to spend effort on new > features. Introducing new features here would also create the situation > where 2.7 has features not in development, and vice-versa, creating an > upgrade dilemma for users (unless we were to port the feature to all > supported branches). And adding significant new features to LTS branches > can always introduce some risk of destabilising it. > > > > So for these reasons, we would normally recommend targeting the > development branch for new features (with backports only where there is a > strong reason to do so), and then picking up the next stable release that > contains the new feature. > > > > Is there a particular reason you’re focusing on 2.7, rather than > development, or would it be viable for you to add this to development and > pick up the next release? > > > > Thanks > > > > Dave > > > > *From: *mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf > of Omer Shapira via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> > *Reply to: *Omer Shapira <omer.shapira(a)gmail.com> > *Date: *Monday, 12 October 2020 at 20:04 > *To: *"mbed-tls(a)lists.trustedfirmware.org" < > mbed-tls(a)lists.trustedfirmware.org> > *Subject: *[mbed-tls] Working on TLS handshake record fragmentation > (#1840) > > > > Hello, > > My employer (Facebook) is willing to give me some time to TLS handshake > fragmentation support to MbedTLS 2.7 [0] . This would be my first > contribution to MbedTLS, and I have several novice questions: > > 1. What is the best way to add the feature to MbedTLS 2.7? > 2. Trade-off between the consistency of the fragmentation code across the > branches, vs. the consistency of the branches. > > > Question 1: Best way to add the feature to MbedTLS 2.7 > > One constraint that I am facing is the code must be added to the upstream > branch that is as close as possible to the 2.7.xx. My understanding of the > Contribution Guidelines[1] is that while the LTS branches are mostly meant > for the bug fixes, backporting of the new features is welcomed as long as > the API/ABI compatibility is maintained and the disruption to the users is > minimized. > > If adding support to the LTS branches is not advisable, are there any > other possibilities of contributing the code to an upstream branch that is > very close to the 2.7.xx? > > Question 2: Trade-off between the consistency of the fragmentation code > across the branches, vs. the consistency of the branches. > > Assuming that adding features to 2.7 (and 2.16) *is* possible, there is a > trade-off between the consistency of the fragmentation code across the > branches, vs. the consistency of the branches. The `development` branch > supports variable-length buffers[2] . Variable messages sizes would make > the fragmentation easier in the development branch. In addition, there is > the MPS effort by Hanno Becker which would make the fragmentation support > even easier in the development branch. None of that is present in the 2.7 > or the 2.16 branches. > > What is the preferable trade-off in such a situation: > a. Minimizing the change to the "host" version (2.7 or 2.16), on the > expense the implementation of the feature differ between 2.7 and > `development`, or > b. Minimizing the differences in the implementation of the feature, on > the expense of more intrusive changes to the earlier versions? > > > [0] https://github.com/ARMmbed/mbedtls/issues/1840 > [1] https://github.com/ARMmbed/mbedtls/blob/development/CONTRIBUTING.md > [2] > https://github.com/ARMmbed/mbedtls/blob/development/include/mbedtls/config.… > > -- > > Sincerely Yours, > Omer Shapira > -- Sincerely Yours, Omer Shapira -- Sincerely Yours, Omer Shapira

5 years, 10 months

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Re: [mbed-tls] Working on TLS handshake record fragmentation (#1840)

by Dave Rodgman

Hi Omer, Thanks for offering to help us with this feature. Normally, we wouldn’t add new features directly to an older branch, for a few reasons. 2.7 is quite old and is in fact only guaranteed to be supported until Feb 21, so it’s not the ideal place to spend effort on new features. Introducing new features here would also create the situation where 2.7 has features not in development, and vice-versa, creating an upgrade dilemma for users (unless we were to port the feature to all supported branches). And adding significant new features to LTS branches can always introduce some risk of destabilising it. So for these reasons, we would normally recommend targeting the development branch for new features (with backports only where there is a strong reason to do so), and then picking up the next stable release that contains the new feature. Is there a particular reason you’re focusing on 2.7, rather than development, or would it be viable for you to add this to development and pick up the next release? Thanks Dave From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of Omer Shapira via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> Reply to: Omer Shapira <omer.shapira(a)gmail.com> Date: Monday, 12 October 2020 at 20:04 To: "mbed-tls(a)lists.trustedfirmware.org" <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] Working on TLS handshake record fragmentation (#1840) Hello, My employer (Facebook) is willing to give me some time to TLS handshake fragmentation support to MbedTLS 2.7 [0] . This would be my first contribution to MbedTLS, and I have several novice questions: 1. What is the best way to add the feature to MbedTLS 2.7? 2. Trade-off between the consistency of the fragmentation code across the branches, vs. the consistency of the branches. Question 1: Best way to add the feature to MbedTLS 2.7 One constraint that I am facing is the code must be added to the upstream branch that is as close as possible to the 2.7.xx. My understanding of the Contribution Guidelines[1] is that while the LTS branches are mostly meant for the bug fixes, backporting of the new features is welcomed as long as the API/ABI compatibility is maintained and the disruption to the users is minimized. If adding support to the LTS branches is not advisable, are there any other possibilities of contributing the code to an upstream branch that is very close to the 2.7.xx? Question 2: Trade-off between the consistency of the fragmentation code across the branches, vs. the consistency of the branches. Assuming that adding features to 2.7 (and 2.16) *is* possible, there is a trade-off between the consistency of the fragmentation code across the branches, vs. the consistency of the branches. The `development` branch supports variable-length buffers[2] . Variable messages sizes would make the fragmentation easier in the development branch. In addition, there is the MPS effort by Hanno Becker which would make the fragmentation support even easier in the development branch. None of that is present in the 2.7 or the 2.16 branches. What is the preferable trade-off in such a situation: a. Minimizing the change to the "host" version (2.7 or 2.16), on the expense the implementation of the feature differ between 2.7 and `development`, or b. Minimizing the differences in the implementation of the feature, on the expense of more intrusive changes to the earlier versions? [0] https://github.com/ARMmbed/mbedtls/issues/1840 [1] https://github.com/ARMmbed/mbedtls/blob/development/CONTRIBUTING.md [2] https://github.com/ARMmbed/mbedtls/blob/development/include/mbedtls/config.… -- Sincerely Yours, Omer Shapira

5 years, 10 months

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Re: [mbed-tls] Working on TLS handshake record fragmentation (#1840)

by Omer Shapira

While waiting for opinions regarding the question of adding features to the LTS versions, I have written a draft design doc. I discussed the "design review process" with Hanno Becker, and we decided to try and use GitHub for the design review. I have created PR #3783 [0], which includes `docs/proposed/hs_fragmentation.md` [1]. I will appreciate your comments, and will update the design doc following the feedback. Once there is clarity on the approach, I will proceed with the implementation PRs. [0] https://github.com/ARMmbed/mbedtls/pull/3783 [1] https://github.com/ARMmbed/mbedtls/pull/3783/commits/8be34f22237ee3cd3c1db2… On Mon, Oct 12, 2020 at 12:04 PM Omer Shapira via mbed-tls < mbed-tls(a)lists.trustedfirmware.org> wrote: > Hello, > > My employer (Facebook) is willing to give me some time to TLS handshake > fragmentation support to MbedTLS 2.7 [0] . This would be my first > contribution to MbedTLS, and I have several novice questions: > > 1. What is the best way to add the feature to MbedTLS 2.7? > 2. Trade-off between the consistency of the fragmentation code across the > branches, vs. the consistency of the branches. > > Question 1: Best way to add the feature to MbedTLS 2.7 > > One constraint that I am facing is the code must be added to the upstream > branch that is as close as possible to the 2.7.xx. My understanding of the > Contribution Guidelines[1] is that while the LTS branches are mostly meant > for the bug fixes, backporting of the new features is welcomed as long as > the API/ABI compatibility is maintained and the disruption to the users is > minimized. > > If adding support to the LTS branches is not advisable, are there any > other possibilities of contributing the code to an upstream branch that is > very close to the 2.7.xx? > > Question 2: Trade-off between the consistency of the fragmentation code > across the branches, vs. the consistency of the branches. > > Assuming that adding features to 2.7 (and 2.16) *is* possible, there is a > trade-off between the consistency of the fragmentation code across the > branches, vs. the consistency of the branches. The `development` branch > supports variable-length buffers[2] . Variable messages sizes would make > the fragmentation easier in the development branch. In addition, there is > the MPS effort by Hanno Becker which would make the fragmentation support > even easier in the development branch. None of that is present in the 2.7 > or the 2.16 branches. > > What is the preferable trade-off in such a situation: > a. Minimizing the change to the "host" version (2.7 or 2.16), on the > expense the implementation of the feature differ between 2.7 and > `development`, or > b. Minimizing the differences in the implementation of the feature, on > the expense of more intrusive changes to the earlier versions? > > > [0] https://github.com/ARMmbed/mbedtls/issues/1840 > [1] https://github.com/ARMmbed/mbedtls/blob/development/CONTRIBUTING.md > [2] > https://github.com/ARMmbed/mbedtls/blob/development/include/mbedtls/config.… > > -- > Sincerely Yours, > Omer Shapira > -- > mbed-tls mailing list > mbed-tls(a)lists.trustedfirmware.org > https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls > -- Sincerely Yours, Omer Shapira

5 years, 10 months

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Working on TLS handshake record fragmentation (#1840)

by Omer Shapira

Hello, My employer (Facebook) is willing to give me some time to TLS handshake fragmentation support to MbedTLS 2.7 [0] . This would be my first contribution to MbedTLS, and I have several novice questions: 1. What is the best way to add the feature to MbedTLS 2.7? 2. Trade-off between the consistency of the fragmentation code across the branches, vs. the consistency of the branches. Question 1: Best way to add the feature to MbedTLS 2.7 One constraint that I am facing is the code must be added to the upstream branch that is as close as possible to the 2.7.xx. My understanding of the Contribution Guidelines[1] is that while the LTS branches are mostly meant for the bug fixes, backporting of the new features is welcomed as long as the API/ABI compatibility is maintained and the disruption to the users is minimized. If adding support to the LTS branches is not advisable, are there any other possibilities of contributing the code to an upstream branch that is very close to the 2.7.xx? Question 2: Trade-off between the consistency of the fragmentation code across the branches, vs. the consistency of the branches. Assuming that adding features to 2.7 (and 2.16) *is* possible, there is a trade-off between the consistency of the fragmentation code across the branches, vs. the consistency of the branches. The `development` branch supports variable-length buffers[2] . Variable messages sizes would make the fragmentation easier in the development branch. In addition, there is the MPS effort by Hanno Becker which would make the fragmentation support even easier in the development branch. None of that is present in the 2.7 or the 2.16 branches. What is the preferable trade-off in such a situation: a. Minimizing the change to the "host" version (2.7 or 2.16), on the expense the implementation of the feature differ between 2.7 and `development`, or b. Minimizing the differences in the implementation of the feature, on the expense of more intrusive changes to the earlier versions? [0] https://github.com/ARMmbed/mbedtls/issues/1840 [1] https://github.com/ARMmbed/mbedtls/blob/development/CONTRIBUTING.md [2] https://github.com/ARMmbed/mbedtls/blob/development/include/mbedtls/config.… -- Sincerely Yours, Omer Shapira

5 years, 10 months

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Mbed TLS Virtual Workshop on Nov. 3rd

by Shebu Varghese Kuriakose

Hi All, Trustedfirmware.org community project would like to invite you to the Mbed TLS Virtual Workshop on November 3rd (Tuesday) from 2pm to 6pm GMT. The purpose of the workshop is to bring together the Mbed TLS community including maintainers, contributors and users to discuss * The future direction of the project and * Ways to improve community collaboration The workshop will be hosted in Zoom open to all. The invitation with the zoom link will be send in the Mbed TLS, PSA Crypto* mailing lists in the coming days. Here are some of the proposed agenda topics. Please reply if there is anything else you would like us or you to present during the workshop that will be interesting to the community * Constant-time code * How to be an effective Mbed TLS reviewer * Processes - how does work get scheduled? * Roadmap, Mbed TLS3.0 * PSA Crypto APIs * How Do I contribute my first review. Thanks, Shebu (TrustedFirmware.org Co-Chair, Mbed TLS Technology Manager) * https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls https://lists.trustedfirmware.org/mailman/listinfo/psa-crypto

5 years, 10 months

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Re: [mbed-tls] Official bug list

by Janos Follath

Hi Innocenti, The official list of defects is available on github: https://github.com/ARMmbed/mbedtls/issues?q=is%3Aissue+is%3Aopen+label%3Abug The revision of fixing is in the Bugfix sections of the ChangeLog file in the source. Eg. for the latest release: https://github.com/ARMmbed/mbedtls/blob/mbedtls-2.24.0/ChangeLog The entries here usually reference the issue number they fixed. Is this something that you can use for your evaluation? Regards, Janos From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of "Innocenti, Michele via mbed-tls" <mbed-tls(a)lists.trustedfirmware.org> Reply to: "Innocenti, Michele" <michele_innocenti(a)baxter.com> Date: Thursday, 1 October 2020 at 14:04 To: "mbed-tls(a)lists.trustedfirmware.org" <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] Official bug list Hi, We are evaluating Mbed TLS library and we need to know if it’s available an official list of defects and revision of fixing. I’m not looking for CVEs but for bugs in the library. Thanks! Michele

5 years, 10 months

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Official bug list

by Innocenti, Michele

Hi, We are evaluating Mbed TLS library and we need to know if it's available an official list of defects and revision of fixing. I'm not looking for CVEs but for bugs in the library. Thanks! Michele

5 years, 10 months

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Re: [mbed-tls] FIPS

by Janos Follath

Hi, There is no FIPS validated/certified version of Mbed TLS. In general most of the components should be very close to FIPS/NIST standards, but I don’t know of any that would have undergone a validation/certification process. Regards, Janos (Mbed TLS developer) From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of Subramanian Gopi Krishnan via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> Reply to: Subramanian Gopi Krishnan <gopikrishnan.subramanian(a)kone.com> Date: Thursday, 1 October 2020 at 07:38 To: "mbed-tls(a)lists.trustedfirmware.org" <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] FIPS Hi, Do we have FIPS compliant for mbedtls; similar to openssl fips? Thanks, Gopi Krishnan

5 years, 10 months

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FIPS

by Subramanian Gopi Krishnan

Hi, Do we have FIPS compliant for mbedtls; similar to openssl fips? Thanks, Gopi Krishnan

5 years, 10 months

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Re: [mbed-tls] Building a collaborative Mbed TLS community

by Frank Bergmann

Hi Gilles, actually I meant that the creator of the PR tries to make a first estimation. Maybe even this could be helpful. :-) Frank On Wed, Sep 30, 2020 at 09:47:41AM +0000, Gilles Peskine via mbed-tls wrote: > Hi Frank, > > Thanks for the suggestion. Sorry for not replying earlier. A time > estimate can help with scheduling, but our problem isn't so much > scheduling as a lack of bandwidth. Also we've found it very difficult to > estimate the time a review will take: some innocuous-looking patches end > up raising time-consuming questions about security or compatibility, > while some large patches turn out to be easy because they don't affect > risky areas much. > > The way we currently work is to schedule large contributions as part of > our sprint planning, but for most reviews we put them in a queue > (https://github.com/orgs/ARMmbed/projects/3). We've found that for our > team, having people pull from that queue works better than designating > reviewers a priori. > > -- > Gilles Peskine > Mbed TLS developer > > On 21/09/2020 07:35, Frank Bergmann via mbed-tls wrote: > > Hi Gilles, > > > > when I ask in our team to review a PR I usually provide an estimation about > > it. Of course a time base estimation and not an agile one in values of > > complexity. ;-) > > One could also provide an estimation about priority. > > Maybe these tiny rules may help somewhat. At least it can provide a better > > overview if you have tons of PRs. > > > > sincerely, > > Frank > > > > On Sun, Sep 20, 2020 at 10:27:44PM +0000, Gilles Peskine via mbed-tls wrote: > >> Hello, > >> > >> Historically, Mbed TLS has been maintained by Arm as an open-source > >> project, accepting external contributions, but with with priorities and > >> plans mostly driven only by Arm. Since earlier this year, Mbed TLS is an > >> open governance project under the umbrella of TrustedFirmware, with the > >> objective of making it a community led project, allowing community to > >> contribute and collaborate on the design and development of the project. > >> In practice, however, the project effectively still has some barriers of > >> entry. We would like to lift these barriers. > >> > >> The Mbed TLS team at Arm have already identified some concrete actions, > >> filed on the Mbed TLS epic board > >> https://github.com/ARMmbed/mbedtls/projects/2#column-10667107 > >> under “Facilitating community contributions”. A few more should be up > >> soon as the result of some internal brainstorming. > >> > >> We've also identified some problem areas which we're tracking as > >> separate topics. > >> > >> * Probably the biggest topic: review was and is a bottleneck. We are > >> working to streamline the review process where possible, without > >> lowering the quality bar, and to prioritize reviews better over new > >> work. (Having personally often been on both sides of the coin, I can > >> confirm that having a pull request sit around for years without getting > >> reviews is frustrating, and so is seeing all these pull request and not > >> having the time to review them all.) We would also like to enable, > >> encourage and value reviews from people who are not project maintainers. > >> > >> * We will migrate the CI to a publicly available platform hosted by > >> TrustedFirmware. However this platform will not be available until 2021. > >> > >> * We are working on a new documentation platform, where we'll transfer > >> both the information available on the current website and information > >> that is currently recorded in an Arm internal wiki. > >> > >> To all of you who have contributed to Mbed TLS, who have tried, or who > >> are considering it, what difficulties have you encountered? What else > >> can we do to make contributing easier? > >> > >> Best regards, > >> > >> -- > >> Gilles Peskine > >> Mbed TLS developer > >> > >> > >> -- > >> mbed-tls mailing list > >> mbed-tls(a)lists.trustedfirmware.org > >> https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls > > > -- > mbed-tls mailing list > mbed-tls(a)lists.trustedfirmware.org > https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls -- Frank Bergmann, Pödinghauser Str. 5, D-32051 Herford, Tel. +49-5221-9249753 SAP Hybris & Linux LPIC-3, E-Mail tx2014(a)tuxad.de, USt-IdNr DE237314606 http://tdyn.de/freel -- Redirect to profile at freelancermap http://www.gulp.de/freiberufler/2HNKY2YHW.html -- Profile at GULP

5 years, 10 months

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Re: [mbed-tls] Building a collaborative Mbed TLS community

by Gilles Peskine

Hi Frank, Thanks for the suggestion. Sorry for not replying earlier. A time estimate can help with scheduling, but our problem isn't so much scheduling as a lack of bandwidth. Also we've found it very difficult to estimate the time a review will take: some innocuous-looking patches end up raising time-consuming questions about security or compatibility, while some large patches turn out to be easy because they don't affect risky areas much. The way we currently work is to schedule large contributions as part of our sprint planning, but for most reviews we put them in a queue (https://github.com/orgs/ARMmbed/projects/3). We've found that for our team, having people pull from that queue works better than designating reviewers a priori. -- Gilles Peskine Mbed TLS developer On 21/09/2020 07:35, Frank Bergmann via mbed-tls wrote: > Hi Gilles, > > when I ask in our team to review a PR I usually provide an estimation about > it. Of course a time base estimation and not an agile one in values of > complexity. ;-) > One could also provide an estimation about priority. > Maybe these tiny rules may help somewhat. At least it can provide a better > overview if you have tons of PRs. > > sincerely, > Frank > > On Sun, Sep 20, 2020 at 10:27:44PM +0000, Gilles Peskine via mbed-tls wrote: >> Hello, >> >> Historically, Mbed TLS has been maintained by Arm as an open-source >> project, accepting external contributions, but with with priorities and >> plans mostly driven only by Arm. Since earlier this year, Mbed TLS is an >> open governance project under the umbrella of TrustedFirmware, with the >> objective of making it a community led project, allowing community to >> contribute and collaborate on the design and development of the project. >> In practice, however, the project effectively still has some barriers of >> entry. We would like to lift these barriers. >> >> The Mbed TLS team at Arm have already identified some concrete actions, >> filed on the Mbed TLS epic board >> https://github.com/ARMmbed/mbedtls/projects/2#column-10667107 >> under “Facilitating community contributions”. A few more should be up >> soon as the result of some internal brainstorming. >> >> We've also identified some problem areas which we're tracking as >> separate topics. >> >> * Probably the biggest topic: review was and is a bottleneck. We are >> working to streamline the review process where possible, without >> lowering the quality bar, and to prioritize reviews better over new >> work. (Having personally often been on both sides of the coin, I can >> confirm that having a pull request sit around for years without getting >> reviews is frustrating, and so is seeing all these pull request and not >> having the time to review them all.) We would also like to enable, >> encourage and value reviews from people who are not project maintainers. >> >> * We will migrate the CI to a publicly available platform hosted by >> TrustedFirmware. However this platform will not be available until 2021. >> >> * We are working on a new documentation platform, where we'll transfer >> both the information available on the current website and information >> that is currently recorded in an Arm internal wiki. >> >> To all of you who have contributed to Mbed TLS, who have tried, or who >> are considering it, what difficulties have you encountered? What else >> can we do to make contributing easier? >> >> Best regards, >> >> -- >> Gilles Peskine >> Mbed TLS developer >> >> >> -- >> mbed-tls mailing list >> mbed-tls(a)lists.trustedfirmware.org >> https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls

5 years, 10 months

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Re: [mbed-tls] Proposed change: no longer credit contributors in the ChangeLog file

by Gilles Peskine

Hello, We're going ahead with this new process. For changes made since the last release (2.24.0 and corresponding updates to long-time support branches), the ChangeLog file will only record user-visible changes, and entries will not be used to credit contributors. We're updating ChangeLog.d/00README.md accordingly (https://github.com/ARMmbed/mbedtls/pull/3726). -- Gilles Peskine Mbed TLS developer On 20/09/2020 23:41, Gilles Peskine via mbed-tls wrote: > Hello, > > The Mbed TLS team is soliciting feedback on a proposed change of our > contributor acknowledgement policy. > > Background: our current policy is to acknowledge all contributors who > are not Arm employees in the ChangeLog files. This is a tradition that > dates back from when the version control history of Mbed TLS (then > PolarSSL) was not public. > > Proposed change: the ChangeLog file will no longer mention who > contributed a patch (“Contributed by …”). A patch will require a > ChangeLog entry only if it makes a user-visible changes, regardless of > who contributed it. We will still credit reporters in the ChangeLog > file, at least for security issues. > > Rationale: the ChangeLog file had a dual purpose: informing users, and > acknowledging contributors. It will now have the single purpose of > informing users. There are better ways of acknowledging contributors > nowadays: the Git history is public, and your contributions are visible > from your GitHub profile. (Note that we don't squash commits, and > attempt to preserve authorship as much as possible when we have to > rebase a patch.) Furthermore, writing a good ChangeLog entry often turns > out to require some back-and-forth, so lessening this requirement will > make it easier to accept contributions and to merge them faster (this is > in fact our primary motivation for the change). > > We are also thinking of creating an acknowledgement page out-of-tree. It > isn't clear yet what its scope would be, but it would include > acknowledging contributions in the form of reviews, which we wish to > encourage. (Please stay tuned for future announcements and discussions > regarding the Mbed TLS review process.) > > Question to potential contributors, or people who have participated in > other open-source projects: do you think that there is any value in > keeping acknowledgements in a file that is distributed with Mbed TLS? Is > there any value in maintaining an exhaustive list of contributors in a > form other than the Git history? > > Best regards, >

5 years, 10 months

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Information about CI failures on pull requests to Mbed TLS

by Gilles Peskine

Hello, If you've made a pull request to Mbed TLS, you've noticed that some of the continuous integration happens on a private server run by Arm. For jobs that ran since yesterday, if there are failures, you can now see the name of the failed tasks next to “PR-NNN-head TLS Testing” or “PR-NNN-merge TLS Testing”. See https://developer.trustedfirmware.org/w/mbed-tls/testing/ci/#identifying-je… for more details. If this isn't enough, an Arm employee can copy the logs from the server. Please ask in a comment. We hope to post logs automatically (https://github.com/ARMmbed/mbedtls/issues/3633) but I can't give a due date for that. We are planning to move to a public server run by TrustedFirmware, but this can't happen until some time in 2021. Please bear with us in the meantime, and thank you for your contributions. -- Gilles Peskine Mbed TLS developer

5 years, 10 months

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MbedTLS Webserver

by Thomas Schwarz

Hello everyone, I want to set up a webserver on my ESP32 Dev Module based von MbedTLS. Therefore I view the ssl_server example on github. Now my question: How can I connect the ssl_server to my local WIFI-network. What extra code do I need? And where is the SSID and the password configurable? Thanks for your help! Best regards Thomas Tel.: +49833460134418 MULTIVAC Info Box MULTIVAC Sepp Haggenmüller SE & Co. KG - Bahnhofstr. 4 - D-87787 Wolfertschwenden - Germany Tel.: +49(0)8334/601-0 - Fax: +49(0)8334/601-199 - multivac(a)multivac.de Kommanditgesellschaft Sitz: 87787 Wolfertschwenden Amtsgericht: Memmingen HRA 8040 USt-IdNr.: DE 129082475 - Steuer-Nr.: 138/169/51105 - WEEE-Reg.-Nr.: DE 16576440 Persönlich haftende Gesellschafterin: MULTIVAC Sepp Haggenmüller Verwaltungs SE Sitz: 87787 Wolfertschwenden Amtsgericht: Memmingen HRB 16659 Geschäftsführende Direktoren: Guido Spix, Christian Traumann Verwaltungsratsvorsitzender: Elmar Fischer Bankverbindung: Deutsche Bank Memmingen . IBAN: DE 31 7337 0008 0123 6330 00 . BIC: DEUT DE MM 733 Banner

5 years, 10 months

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DTLS server

by Mehdi Karimi

I am using v16 of the mbedTLS library to setup DTLS server. However, I observe that the handshake does not work well and there are several issues starting with the cookie exchange. Do I necessarily have to update to the latest version of mbedTLS? Are there known issues with DTLS server setup using previous versions (as far as I could tell from the ChangeLog). Thanks Mehdi

5 years, 10 months

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Re: [mbed-tls] Proposed change: no longer credit contributors in the ChangeLog file

by Frank Bergmann

Hi Gilles, as you said: Git is public. As long as it is kept public there's no reason to "duplicate details". My 2 cents. sincerely, Frank On Sun, Sep 20, 2020 at 09:41:26PM +0000, Gilles Peskine via mbed-tls wrote: > Hello, > > The Mbed TLS team is soliciting feedback on a proposed change of our > contributor acknowledgement policy. > > Background: our current policy is to acknowledge all contributors who > are not Arm employees in the ChangeLog files. This is a tradition that > dates back from when the version control history of Mbed TLS (then > PolarSSL) was not public. > > Proposed change: the ChangeLog file will no longer mention who > contributed a patch (“Contributed by …”). A patch will require a > ChangeLog entry only if it makes a user-visible changes, regardless of > who contributed it. We will still credit reporters in the ChangeLog > file, at least for security issues. > > Rationale: the ChangeLog file had a dual purpose: informing users, and > acknowledging contributors. It will now have the single purpose of > informing users. There are better ways of acknowledging contributors > nowadays: the Git history is public, and your contributions are visible > from your GitHub profile. (Note that we don't squash commits, and > attempt to preserve authorship as much as possible when we have to > rebase a patch.) Furthermore, writing a good ChangeLog entry often turns > out to require some back-and-forth, so lessening this requirement will > make it easier to accept contributions and to merge them faster (this is > in fact our primary motivation for the change). > > We are also thinking of creating an acknowledgement page out-of-tree. It > isn't clear yet what its scope would be, but it would include > acknowledging contributions in the form of reviews, which we wish to > encourage. (Please stay tuned for future announcements and discussions > regarding the Mbed TLS review process.) > > Question to potential contributors, or people who have participated in > other open-source projects: do you think that there is any value in > keeping acknowledgements in a file that is distributed with Mbed TLS? Is > there any value in maintaining an exhaustive list of contributors in a > form other than the Git history? > > Best regards, > > -- > Gilles Peskine > Mbed TLS developer > > -- > mbed-tls mailing list > mbed-tls(a)lists.trustedfirmware.org > https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls -- Frank Bergmann, Pödinghauser Str. 5, D-32051 Herford, Tel. +49-5221-9249753 SAP Hybris & Linux LPIC-3, E-Mail tx2014(a)tuxad.de, USt-IdNr DE237314606 http://tdyn.de/freel -- Redirect to profile at freelancermap http://www.gulp.de/freiberufler/2HNKY2YHW.html -- Profile at GULP

5 years, 10 months

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Re: [mbed-tls] Building a collaborative Mbed TLS community

by Frank Bergmann

Hi Gilles, when I ask in our team to review a PR I usually provide an estimation about it. Of course a time base estimation and not an agile one in values of complexity. ;-) One could also provide an estimation about priority. Maybe these tiny rules may help somewhat. At least it can provide a better overview if you have tons of PRs. sincerely, Frank On Sun, Sep 20, 2020 at 10:27:44PM +0000, Gilles Peskine via mbed-tls wrote: > Hello, > > Historically, Mbed TLS has been maintained by Arm as an open-source > project, accepting external contributions, but with with priorities and > plans mostly driven only by Arm. Since earlier this year, Mbed TLS is an > open governance project under the umbrella of TrustedFirmware, with the > objective of making it a community led project, allowing community to > contribute and collaborate on the design and development of the project. > In practice, however, the project effectively still has some barriers of > entry. We would like to lift these barriers. > > The Mbed TLS team at Arm have already identified some concrete actions, > filed on the Mbed TLS epic board > https://github.com/ARMmbed/mbedtls/projects/2#column-10667107 > under “Facilitating community contributions”. A few more should be up > soon as the result of some internal brainstorming. > > We've also identified some problem areas which we're tracking as > separate topics. > > * Probably the biggest topic: review was and is a bottleneck. We are > working to streamline the review process where possible, without > lowering the quality bar, and to prioritize reviews better over new > work. (Having personally often been on both sides of the coin, I can > confirm that having a pull request sit around for years without getting > reviews is frustrating, and so is seeing all these pull request and not > having the time to review them all.) We would also like to enable, > encourage and value reviews from people who are not project maintainers. > > * We will migrate the CI to a publicly available platform hosted by > TrustedFirmware. However this platform will not be available until 2021. > > * We are working on a new documentation platform, where we'll transfer > both the information available on the current website and information > that is currently recorded in an Arm internal wiki. > > To all of you who have contributed to Mbed TLS, who have tried, or who > are considering it, what difficulties have you encountered? What else > can we do to make contributing easier? > > Best regards, > > -- > Gilles Peskine > Mbed TLS developer > > > -- > mbed-tls mailing list > mbed-tls(a)lists.trustedfirmware.org > https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls -- Frank Bergmann, Pödinghauser Str. 5, D-32051 Herford, Tel. +49-5221-9249753 SAP Hybris & Linux LPIC-3, E-Mail tx2014(a)tuxad.de, USt-IdNr DE237314606 http://tdyn.de/freel -- Redirect to profile at freelancermap http://www.gulp.de/freiberufler/2HNKY2YHW.html -- Profile at GULP

5 years, 10 months

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Building a collaborative Mbed TLS community

by Gilles Peskine

Hello, Historically, Mbed TLS has been maintained by Arm as an open-source project, accepting external contributions, but with with priorities and plans mostly driven only by Arm. Since earlier this year, Mbed TLS is an open governance project under the umbrella of TrustedFirmware, with the objective of making it a community led project, allowing community to contribute and collaborate on the design and development of the project. In practice, however, the project effectively still has some barriers of entry. We would like to lift these barriers. The Mbed TLS team at Arm have already identified some concrete actions, filed on the Mbed TLS epic board https://github.com/ARMmbed/mbedtls/projects/2#column-10667107 under “Facilitating community contributions”. A few more should be up soon as the result of some internal brainstorming. We've also identified some problem areas which we're tracking as separate topics. * Probably the biggest topic: review was and is a bottleneck. We are working to streamline the review process where possible, without lowering the quality bar, and to prioritize reviews better over new work. (Having personally often been on both sides of the coin, I can confirm that having a pull request sit around for years without getting reviews is frustrating, and so is seeing all these pull request and not having the time to review them all.) We would also like to enable, encourage and value reviews from people who are not project maintainers. * We will migrate the CI to a publicly available platform hosted by TrustedFirmware. However this platform will not be available until 2021. * We are working on a new documentation platform, where we'll transfer both the information available on the current website and information that is currently recorded in an Arm internal wiki. To all of you who have contributed to Mbed TLS, who have tried, or who are considering it, what difficulties have you encountered? What else can we do to make contributing easier? Best regards, -- Gilles Peskine Mbed TLS developer

5 years, 10 months

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Proposed change: no longer credit contributors in the ChangeLog file

by Gilles Peskine

Hello, The Mbed TLS team is soliciting feedback on a proposed change of our contributor acknowledgement policy. Background: our current policy is to acknowledge all contributors who are not Arm employees in the ChangeLog files. This is a tradition that dates back from when the version control history of Mbed TLS (then PolarSSL) was not public. Proposed change: the ChangeLog file will no longer mention who contributed a patch (“Contributed by …”). A patch will require a ChangeLog entry only if it makes a user-visible changes, regardless of who contributed it. We will still credit reporters in the ChangeLog file, at least for security issues. Rationale: the ChangeLog file had a dual purpose: informing users, and acknowledging contributors. It will now have the single purpose of informing users. There are better ways of acknowledging contributors nowadays: the Git history is public, and your contributions are visible from your GitHub profile. (Note that we don't squash commits, and attempt to preserve authorship as much as possible when we have to rebase a patch.) Furthermore, writing a good ChangeLog entry often turns out to require some back-and-forth, so lessening this requirement will make it easier to accept contributions and to merge them faster (this is in fact our primary motivation for the change). We are also thinking of creating an acknowledgement page out-of-tree. It isn't clear yet what its scope would be, but it would include acknowledging contributions in the form of reviews, which we wish to encourage. (Please stay tuned for future announcements and discussions regarding the Mbed TLS review process.) Question to potential contributors, or people who have participated in other open-source projects: do you think that there is any value in keeping acknowledgements in a file that is distributed with Mbed TLS? Is there any value in maintaining an exhaustive list of contributors in a form other than the Git history? Best regards, -- Gilles Peskine Mbed TLS developer

5 years, 10 months

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Parse RSA keyfile-Error

by youssouf sokhona

Good morning to all, I am currently trying to perform RSA encryption, so I am using a file containing a public key (generated by OpenSSL) to do this. So at the beginning I use the "mbedtls_pk_parse_keyfile" function to read it, as you can see on the image below. Unfortunately, I find the following error : ERROR 3E00 : Read/write of file failed. Do someone have an idea of why I have this error ? Or should I change my way to read this file ? Thanks a lot, have a nice Weekend [cid:image002.png@01D68839.7B058100]

5 years, 11 months

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Re: [mbed-tls] Query related to ARM - MbedTLS

by Manu Abraham

Hi, Unrelated comment from my side, adding on to Manuel's comment: It appears that ST supplies a binary blob which does make use of their hardware crypto accelerator. https://www.st.com/en/embedded-software/x-cube-cryptolib.html Cheers, Manu On Wed, Sep 9, 2020 at 1:21 PM Manuel Pegourie-Gonnard via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> wrote: > > Hi, > > On those CPUs, the AES implementation in Mbed TLS is pure C, it doesn't use any hand-written assembly. The only platforms where it does so so far are x86-64 (to take advantage of the AES-NI extension if available), and some Via CPUs (x86) that have AES acceleration as well. > > Regards, > Manuel. > ________________________________ > From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of Areeb Asad via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> > Sent: 09 September 2020 08:32 > To: mbed-tls(a)lists.trustedfirmware.org <mbed-tls(a)lists.trustedfirmware.org> > Subject: [mbed-tls] Query related to ARM - MbedTLS > > Hi, > > I hope you are doing well. I am using the mbedTLS AES library in my projects, part of my master thesis at Uppsala University. > > I would like to know whether the mbedTLS AES library uses any assemble specific code for operations? I am using this library on Cortex-M23 and Cortex M0+. > > Looking forward to hearing from you. > > > Best regards, > Hafiz Areeb Asad > -- > mbed-tls mailing list > mbed-tls(a)lists.trustedfirmware.org > https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls

5 years, 11 months

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Re: [mbed-tls] Query related to ARM - MbedTLS

by Manuel Pegourie-Gonnard

Hi, On those CPUs, the AES implementation in Mbed TLS is pure C, it doesn't use any hand-written assembly. The only platforms where it does so so far are x86-64 (to take advantage of the AES-NI extension if available), and some Via CPUs (x86) that have AES acceleration as well. Regards, Manuel. ________________________________ From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of Areeb Asad via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> Sent: 09 September 2020 08:32 To: mbed-tls(a)lists.trustedfirmware.org <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] Query related to ARM - MbedTLS Hi, I hope you are doing well. I am using the mbedTLS AES library in my projects, part of my master thesis at Uppsala University. I would like to know whether the mbedTLS AES library uses any assemble specific code for operations? I am using this library on Cortex-M23 and Cortex M0+. Looking forward to hearing from you. Best regards, Hafiz Areeb Asad

5 years, 11 months

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Query related to ARM - MbedTLS

by Areeb Asad

Hi, I hope you are doing well. I am using the mbedTLS AES library in my projects, part of my master thesis at Uppsala University. I would like to know whether the mbedTLS AES library uses any assemble specific code for operations? I am using this library on Cortex-M23 and Cortex M0+. Looking forward to hearing from you. Best regards, Hafiz Areeb Asad

5 years, 11 months

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A new configuration mechanism for PSA crypto in Mbed TLS

by Gilles Peskine

Hello, As you may be aware, there is work in progress to implement support for hardware drivers in Mbed TLS when using the PSA API. These are direct calls from the PSA frontend layer to driver code, without going through mbedtls_xxx APIs and the ALT implementations. The specifications are the psa-driver-*.md files in https://github.com/ARMmbed/mbedtls/tree/development/docs/proposed and you can watch the work in progress in the “Unified driver interface: API design and prototype” epic https://github.com/ARMmbed/mbedtls/projects/2#column-8543266 . When an algorithm is implemented in hardware, in most cases, it is unnecessary to include a software implementation, and it should be possible to exclude the software implementation from the build to keep the code size down. Unfortunately the current Mbed TLS configuration mechanism does not support this, because it does not distinguish “I want AES” from “I want mbedtls_aes_xxx”. So we need new compile-time options to convey “I want PSA_KEY_TYPE_AES in my application but I don't care whether it's done in hardware or mbedtls_aes_xxx”. We are going to implement a configuration mechanism to select which cryptographic algorithms are included in the PSA interface in a build of Mbed TLS. It will rely on #define statements, like the existing config.h, but with different naming conventions for PSA. You can see the specification proposal at https://github.com/ARMmbed/mbedtls/pull/3628 . Feedback is welcome. We're likely to merge this pull request soon, but even after it's merged I'll keep watching comments, or you can post feedback on the mailing list, or raise an issue on GitHub if you have a specific feature request. A major difference between the current MBEDTLS_xxx_C configuration and the new PSA_WANT_xxx configuration is that PSA_WANT_xxx is additive: if PSA_WANT_xxx depends on some other feature, enabling PSA_WANT_xxx will automatically enable that feature in most cases (the exception being when there's more than one way to enable the dependent feature, e.g. when a hash algorithm is needed but it doesn't matter which hash). This is in contrast with the current strict mechanism where enabling MBEDTLS_xxx_C is an error if it depends on some other feature that isn't enabled. We haven't decided yet, but we're thinking of changing to an additive mechanism for the whole Mbed TLS configuration in Mbed TLS 3.0. If you want to watch the implementation work in progress, it will be under the “Driver Interface: Removing unused code” epic https://github.com/ARMmbed/mbedtls/projects/2#column-9449707 . Note that the #define-based mechanism is somewhat experimental and we won't commit yet about its long-term stability in Mbed TLS. It is likely to be complemented by a JSON-based mechanism in the future. This JSON mechanism would be similar to the proposed mechanism for drivers and would allow finer granularity (for example, RSA verification without RSA signature). Arm is considering standardizing the (as yet non-existent) JSON mechanism as a PSA specification. Best regards, -- Gilles Peskine Mbed TLS developer (and PSA crypto architect)

5 years, 11 months

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How can I encrypt RSA private key with AES?

by Shariful Alam

Hi, I hope everyone is doing well. I am a beginner on mbedtls and cryptography. I hope you will understand if there is a lack of understanding or a rookie mistake from my part. So, My goal is to do a key-encryption key. I have an *RSA* private key file "*private.pem*" generated by OpenSSL. I want to encrypt the content of this "private.pem" with *AES* *encryption* and followed by *AES decryption *on the encrypted data. To do that, I read the "private.pem" file into a buffer and perform AES encryption. The problem is when I perform the AES decryption operation I get something else instead of the original "private.pem" data. I have a working example of AES encryption/decryption working on plaintext perfectly. So, I guess there is a flaw in my understanding of encryption/decryption of byte64 encoded string. Can someone please suggests me how can I encrypt RSA private key with AES? Thanks, Shariful

5 years, 11 months

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[Mbed-tls-announce] Latest release link on github

by Janos Follath via Mbed-tls-announce

Mbed TLS version 2.24.0, 2.16.8 and 2.7.17 have been released recently. Version 2.7.17 is incorrectly marked as the latest release by github. Since this happens automatically based on the commit creation dates, this can’t be fixed until the next release. We have extended the release notes of 2.7.17 to warn about this and changed the download links on the website. We would like to confirm that version 2.24.0 is the latest release and the other two are the patch releases for the 2.16 and 2.7 long term support branches. My apologies for the inconvenience and thank you for your support! Best regards, Janos (On behalf of the Mbed TLS team) -- Mbed-tls-announce mailing list Mbed-tls-announce(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls-announce

5 years, 11 months

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[Mbed-tls-announce] Mbed TLS: Security Advisory and Release of Mbed TLS 2.24.0, 2.16.8 and 2.7.17

by Janos Follath via Mbed-tls-announce

Mbed TLS Security Advisories have been issued to accompany the release of Mbed TLS versions 2.24.0, 2.16.8 and 2.7.17, which have just been released. These releases of Mbed TLS address several security issues, provide bug fixes, and bring other minor changes. Full details are available in the release notes (https://github.com/ARMmbed/mbedtls/releases/tag/mbedtls-2.24.0, https://github.com/ARMmbed/mbedtls/releases/tag/mbedtls-2.16.8, https://github.com/ARMmbed/mbedtls/releases/tag/mbedtls-2.7.17) and in the 2020-07 security advisories (https://tls.mbed.org/tech-updates/security-advisories) We recommend all users to consider whether they are impacted, and to upgrade appropriately. -- Mbed-tls-announce mailing list Mbed-tls-announce(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls-announce

5 years, 11 months

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Re: [mbed-tls] Print long MPI

by Gilles Peskine

Hello, 4096 bytes is a lot larger than a typical public key. 4096 *bits* is common for an RSA key. Are you sure you're using the correct units? By default the library doesn't support the creation of MPI that are larger than 1024 bytes. This is a configuration option (MBEDTLS_MPI_MAX_SIZE), although it's uncommon to change it (a larger value is hardly ever necessary, and a smaller value won't save memory except in RSA which needs at least 512 bytes for 4096-bit keys). However mbedtls_mpi_write_file itself doesn't have any size limit. Best regards, -- Gilles Peskine Mbed TLS developer On 27/08/2020 13:27, youssouf sokhona via mbed-tls wrote: > > Hello everyone, I think you are fine during this crisis. > > > > I am working now with mbedtls modulee, and I wanted to print a > function « mbedtls_mpi_write_file » to print the value of an MPI. This > function works with common values. > > > > However, when I want to print an MPI which is very long (about 4096 > bytes, a public key), it doesn’t work. Someone knows how to solve this > problem ? > > > > Thanks a lot > > > > Best regards, YS > > > >

5 years, 11 months

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Print long MPI

by youssouf sokhona

Hello everyone, I think you are fine during this crisis. I am working now with mbedtls modulee, and I wanted to print a function « mbedtls_mpi_write_file » to print the value of an MPI. This function works with common values. However, when I want to print an MPI which is very long (about 4096 bytes, a public key), it doesn’t work. Someone knows how to solve this problem ? Thanks a lot Best regards, YS

5 years, 11 months

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Re: [mbed-tls] mbedtls handshake failed

by Hannes Tschofenig

Hi Manu, It looks like you made a mistake on the client side configuring the certificate/private key. The client does not send the certificate and that corresponds to the error message on the server-side ("peer did not return a certificate"). Ciao Hannes -----Original Message----- From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> On Behalf Of Manu Abraham via mbed-tls Sent: Tuesday, August 25, 2020 5:20 PM To: mbed-tls(a)lists.trustedfirmware.org Subject: [mbed-tls] mbedtls handshake failed Greetings, I am trying to connect from a STM32H7 MCU to a mosquitto peer, Can someone please help me to fix this issue that I have ? I have used the DES3 cipher to create the keys .. openssl genrsa -des3 -out test_ca.key 2048 .. Fiddled quite a bit with buffers, stack, heap and mbedtls config, eventually the communication appears to be working, but the handshake appears to fail. At the client MCU side, I see the mbedtls_ssl_handshake failed message with a return value of 0x7780 Additionally, I do see this message too: ssl_tls.c:5169: got an alert message, type: [2:40] ssl_tls.c:5177: is a fatal alert message (msg 40) But unfortunately, I am unable to make out what the error message means. At the peer, this is what i do see: 1598367067: New connection from 192.168.1.33 on port 8883. 1598367074: OpenSSL Error: error:1417C0C7:SSL routines:tls_process_client_certif icate:peer did not return a certificate 1598367074: Socket error on client <unknown>, disconnecting. 1598368366: mosquitto version 1.6.7 terminating Someone, Please help ! Thanks, Manu ssl_tls.c:8084: => handshake ssl_cli.c:3510: client state: 0 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:3510: client state: 1 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:0774: => write client hello ssl_cli.c:0811: client hello, max version: [3:3] ssl_cli.c:0821: dumping 'client hello, random bytes' (32 bytes) ssl_cli.c:0821: 0000: 3c ce d6 f9 48 cc 7d 5d 77 24 74 f2 1d 9f 8b aa <...H.}]w$t..... ssl_cli.c:0821: 0010: 4b 0c 20 64 d3 22 d0 ee 5e 3b 83 24 a7 01 ec d9 K. d."..^;.$.... ssl_cli.c:0874: client hello, session id len.: 0 ssl_cli.c:0875: dumping 'client hello, session id' (0 bytes) ssl_cli.c:0921: client hello, add ciphersuite: c02c ssl_cli.c:0921: client hello, add ciphersuite: c02b ssl_cli.c:0921: client hello, add ciphersuite: c030 ssl_cli.c:0921: client hello, add ciphersuite: c02f ssl_cli.c:0934: client hello, got 4 ciphersuites (excluding SCSVs) ssl_cli.c:0943: adding EMPTY_RENEGOTIATION_INFO_SCSV ssl_cli.c:0992: client hello, compress len.: 1 ssl_cli.c:0993: client hello, compress alg.: 0 ssl_cli.c:0186: client hello, adding signature_algorithms extension ssl_cli.c:0271: client hello, adding supported_elliptic_curves extension ssl_cli.c:0336: client hello, adding supported_point_formats extension ssl_cli.c:1070: client hello, total extension length: 38 ssl_tls.c:3184: => write handshake message ssl_tls.c:3343: => write record ssl_tls.c:3420: output record: msgtype = 22, version = [3:3], msglen = 93 ssl_tls.c:3425: dumping 'output record sent to network' (98 bytes) ssl_tls.c:3425: 0000: 16 03 03 00 5d 01 00 00 59 03 03 3c ce d6 f9 48 ....]...Y..<...H .. .. .. .. .. .. .. .. .. .. ssl_tls.c:3425: 0050: 03 01 00 0a 00 06 00 04 00 18 00 17 00 0b 00 02 ................ ssl_tls.c:3425: 0060: 01 00 .. ssl_tls.c:2755: => flush output ssl_tls.c:2773: message length: 98, out_left: 98 ssl_tls.c:2779: ssl->f_send() returned 98 (-0xffffff9e) ssl_tls.c:2807: <= flush output ssl_tls.c:3476: <= write record ssl_tls.c:3320: <= write handshake message ssl_cli.c:1106: <= write client hello ssl_cli.c:3510: client state: 2 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:1499: => parse server hello ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:8094: <= handshake ssl_tls.c:8084: => handshake ssl_cli.c:3510: client state: 2 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:1499: => parse server hello ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 00 59 ....Y ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 89 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 94 ssl_tls.c:2720: in_left: 5, nb_want: 94 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 89 (-0xffffffa7) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (94 bytes) ssl_tls.c:4232: 0000: 16 03 03 00 59 02 00 00 55 03 03 d1 64 6e e1 0c ....Y...U...dn.. .. .. .. .. .. .. .. .. .. .. ssl_tls.c:4232: 0050: 0d ff 01 00 01 00 00 0b 00 04 03 00 01 02 .............. ssl_tls.c:3624: handshake message: msglen = 89, type = 2, hslen = 89 ssl_tls.c:4385: <= read record ssl_cli.c:1579: dumping 'server hello, version' (2 bytes) ssl_cli.c:1579: 0000: 03 03 .. ssl_cli.c:1600: server hello, current time: 3513020129 ssl_cli.c:1610: dumping 'server hello, random bytes' (32 bytes) ssl_cli.c:1610: 0000: d1 64 6e e1 0c 1f ac 75 77 eb d7 02 24 dd a7 da .dn....uw...$... ssl_cli.c:1610: 0010: 48 f3 50 43 34 10 d8 d9 44 4f 57 4e 47 52 44 01 H.PC4...DOWNGRD. ssl_cli.c:1690: server hello, session id len.: 32 ssl_cli.c:1691: dumping 'server hello, session id' (32 bytes) ssl_cli.c:1691: 0000: 90 8f cc f8 31 63 81 ae aa bf a9 b9 61 1e 78 f6 ....1c......a.x. ssl_cli.c:1691: 0010: 79 b8 26 66 51 99 f4 50 45 d4 21 9b 22 24 4c 63 y.&fQ..PE.!."$Lc ssl_cli.c:1728: no session has been resumed ssl_cli.c:1731: server hello, chosen ciphersuite: c030 ssl_cli.c:1732: server hello, compress alg.: 0 ssl_cli.c:1764: server hello, chosen ciphersuite: TLS-ECDHE-RSA-WITH-AES-256-GCM-SHA384 ssl_cli.c:1789: server hello, total extension length: 13 ssl_cli.c:1809: found renegotiation extension ssl_cli.c:1888: found supported_point_formats extension ssl_cli.c:1292: point format selected: 0 ssl_cli.c:1978: <= parse server hello ssl_cli.c:3510: client state: 3 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5655: => parse certificate ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 07 80 ..... ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 1920 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 1925 ssl_tls.c:2720: in_left: 5, nb_want: 1925 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 1361 (-0xfffffaaf) ssl_tls.c:2720: in_left: 1366, nb_want: 1925 ssl_tls.c:8094: <= handshake ssl_tls.c:8084: => handshake ssl_cli.c:3510: client state: 3 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5655: => parse certificate ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 1366, nb_want: 5 ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 07 80 ..... ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 1920 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 1366, nb_want: 1925 ssl_tls.c:2720: in_left: 1366, nb_want: 1925 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 559 (-0xfffffdd1) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (1925 bytes) ssl_tls.c:4232: 0000: 16 03 03 07 80 0b 00 07 7c 00 07 79 00 03 90 30 ........|..y...0 .. .. .. .. .. .. .. .. .. .. ssl_tls.c:4232: 0770: df d8 30 17 65 70 2a 02 54 9a 4c cf b1 51 04 25 ..0.ep*.T.L..Q.% ssl_tls.c:4232: 0780: 83 2c ab dd 46 .,..F ssl_tls.c:3624: handshake message: msglen = 1920, type = 11, hslen = 1920 ssl_tls.c:4385: <= read record ssl_tls.c:5606: peer certificate #1: ssl_tls.c:5606: cert. version : 1 ssl_tls.c:5606: serial number : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: issuer name : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: subject name : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: issued on : 2020-08-15 09:12:30 ssl_tls.c:5606: expires on : 2030-08-13 09:12:30 ssl_tls.c:5606: signed using : RSA with SHA-256 ssl_tls.c:5606: RSA key size : 2048 bits ssl_tls.c:5606: value of 'crt->rsa.N' (2048 bits) is: ssl_tls.c:5606: c9 93 0d f4 7b 93 95 8f 4d ec bb 77 46 82 48 6d .. .. .. .. .. .. .. .. .. .. ssl_tls.c:5606: 0f 00 85 cf c9 40 b0 f8 b2 df 1b 75 bd 2e 95 43 ssl_tls.c:5606: value of 'crt->rsa.E' (17 bits) is: ssl_tls.c:5606: 01 00 01 ssl_tls.c:5606: peer certificate #2: ssl_tls.c:5606: cert. version : 3 ssl_tls.c:5606: serial number : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: issuer name : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: subject name : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: issued on : 2020-08-15 08:54:30 ssl_tls.c:5606: expires on : 2030-08-13 08:54:30 ssl_tls.c:5606: signed using : RSA with SHA-256 ssl_tls.c:5606: RSA key size : 2048 bits ssl_tls.c:5606: basic constraints : CA=true ssl_tls.c:5606: value of 'crt->rsa.N' (2048 bits) is: ssl_tls.c:5606: c4 e2 4b 37 45 4a 36 e5 b0 14 f7 fa 76 1d c4 29 .. .. .. .. .. .. .. .. .. .. ssl_tls.c:5606: 43 7c 19 f2 b0 dc ef 69 cf 13 c4 cb fa 80 92 f1 ssl_tls.c:5606: value of 'crt->rsa.E' (17 bits) is: ssl_tls.c:5606: 01 00 01 ssl_tls.c:5856: Certificate verification flags clear ssl_tls.c:5863: <= parse certificate ssl_cli.c:3510: client state: 4 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:2336: => parse server key exchange ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 01 4d ....M ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 333 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 338 ssl_tls.c:2720: in_left: 5, nb_want: 338 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 333 (-0xfffffeb3) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (338 bytes) ssl_tls.c:4232: 0000: 16 03 03 01 4d 0c 00 01 49 03 00 17 41 04 6e 49 ....M...I...A.nI .. .. .. .. .. .. .. .. .. .. ssl_tls.c:4232: 0140: c4 4b 34 2f 83 5f 98 17 39 5e 6e 4d 56 f4 c1 4c .K4/._..9^nMV..L ssl_tls.c:4232: 0150: 39 0f 9. ssl_tls.c:3624: handshake message: msglen = 333, type = 12, hslen = 333 ssl_tls.c:4385: <= read record ssl_cli.c:2424: dumping 'server key exchange' (329 bytes) ssl_cli.c:2424: 0000: 03 00 17 41 04 6e 49 4b 1c 4e 7b 2b ff c3 c9 9b ...A.nIK.N{+.... .. .. .. .. .. .. .. .. .. .. ssl_cli.c:2424: 0130: d9 33 d2 6e a7 05 ca c4 4b 34 2f 83 5f 98 17 39 .3.n....K4/._..9 ssl_cli.c:2424: 0140: 5e 6e 4d 56 f4 c1 4c 39 0f ^nMV..L9. ssl_cli.c:2044: ECDH curve: secp256r1 ssl_cli.c:2054: value of 'ECDH: Qp(X)' (255 bits) is: ssl_cli.c:2054: 6e 49 4b 1c 4e 7b 2b ff c3 c9 9b 81 29 4d a8 92 ssl_cli.c:2054: af c2 77 2b 3b c6 26 ba d4 c7 a2 2d 83 78 e3 54 ssl_cli.c:2054: value of 'ECDH: Qp(Y)' (256 bits) is: ssl_cli.c:2054: d6 91 fe 18 70 fb bc b6 c7 aa 67 1c 08 8b 4d 58 ssl_cli.c:2054: a4 70 59 97 90 23 8d 4b b6 24 4e 1a 7e 13 f2 d1 ssl_cli.c:2278: Server used SignatureAlgorithm 1 ssl_cli.c:2279: Server used HashAlgorithm 4 ssl_cli.c:2580: dumping 'signature' (256 bytes) ssl_cli.c:2580: 0000: b3 88 25 7f 3f 6b cf 7e 03 de 11 5b 4f 47 e9 6e ..%.?k.~...[OG.n .. .. .. .. .. .. .. .. .. .. ssl_cli.c:2580: 00f0: 34 2f 83 5f 98 17 39 5e 6e 4d 56 f4 c1 4c 39 0f 4/._..9^nMV..L9. ssl_cli.c:2616: dumping 'parameters hash' (32 bytes) ssl_cli.c:2616: 0000: bc 4e 7e a6 a6 02 76 66 2c da 19 6c ea 5a aa df .N~...vf,..l.Z.. ssl_cli.c:2616: 0010: ae 3a ff e9 34 c6 d1 72 98 b4 f3 7d b8 71 11 65 .:..4..r...}.q.e ssl_cli.c:2664: <= parse server key exchange ssl_cli.c:3510: client state: 5 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:2697: => parse certificate request ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 00 3a ....: ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 58 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 63 ssl_tls.c:2720: in_left: 5, nb_want: 63 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 58 (-0xffffffc6) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (63 bytes) ssl_tls.c:4232: 0000: 16 03 03 00 3a 0d 00 00 36 03 01 02 40 00 2e 04 ....:...6...@... .. .. .. .. .. .. .. .. .. .. ssl_tls.c:4232: 0030: 01 02 01 03 02 02 02 04 02 05 02 06 02 00 00 ............... ssl_tls.c:3624: handshake message: msglen = 58, type = 13, hslen = 58 ssl_tls.c:4385: <= read record ssl_cli.c:2723: got a certificate request ssl_cli.c:2823: Supported Signature Algorithm found: 4,3 ssl_cli.c:2823: Supported Signature Algorithm found: 5,3 ssl_cli.c:2823: Supported Signature Algorithm found: 6,3 ssl_cli.c:2823: Supported Signature Algorithm found: 8,7 ssl_cli.c:2823: Supported Signature Algorithm found: 8,8 ssl_cli.c:2823: Supported Signature Algorithm found: 8,9 ssl_cli.c:2823: Supported Signature Algorithm found: 8,10 ssl_cli.c:2823: Supported Signature Algorithm found: 8,11 ssl_cli.c:2823: Supported Signature Algorithm found: 8,4 ssl_cli.c:2823: Supported Signature Algorithm found: 8,5 ssl_cli.c:2823: Supported Signature Algorithm found: 8,6 ssl_cli.c:2823: Supported Signature Algorithm found: 4,1 ssl_cli.c:2823: Supported Signature Algorithm found: 5,1 ssl_cli.c:2823: Supported Signature Algorithm found: 6,1 ssl_cli.c:2823: Supported Signature Algorithm found: 3,3 ssl_cli.c:2823: Supported Signature Algorithm found: 2,3 ssl_cli.c:2823: Supported Signature Algorithm found: 3,1 ssl_cli.c:2823: Supported Signature Algorithm found: 2,1 ssl_cli.c:2823: Supported Signature Algorithm found: 3,2 ssl_cli.c:2823: Supported Signature Algorithm found: 2,2 ssl_cli.c:2823: Supported Signature Algorithm found: 4,2 ssl_cli.c:2823: Supported Signature Algorithm found: 5,2 ssl_cli.c:2823: Supported Signature Algorithm found: 6,2 ssl_cli.c:2846: <= parse certificate request ssl_cli.c:3510: client state: 6 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:2856: => parse server hello done ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 00 04 ..... ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 4 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 9 ssl_tls.c:2720: in_left: 5, nb_want: 9 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 4 (-0xfffffffc) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (9 bytes) ssl_tls.c:4232: 0000: 16 03 03 00 04 0e 00 00 00 ......... ssl_tls.c:3624: handshake message: msglen = 4, type = 14, hslen = 4 ssl_tls.c:4385: <= read record ssl_cli.c:2886: <= parse server hello done ssl_cli.c:3510: client state: 7 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5329: => write certificate ssl_tls.c:3184: => write handshake message ssl_tls.c:3343: => write record ssl_tls.c:3420: output record: msgtype = 22, version = [3:3], msglen = 7 ssl_tls.c:3425: dumping 'output record sent to network' (12 bytes) ssl_tls.c:3425: 0000: 16 03 03 00 07 0b 00 00 03 00 00 00 ............ ssl_tls.c:2755: => flush output ssl_tls.c:2773: message length: 12, out_left: 12 ssl_tls.c:2779: ssl->f_send() returned 12 (-0xfffffff4) ssl_tls.c:2807: <= flush output ssl_tls.c:3476: <= write record ssl_tls.c:3320: <= write handshake message ssl_tls.c:5433: <= write certificate ssl_cli.c:3510: client state: 8 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:2898: => write client key exchange ssl_cli.c:2977: value of 'ECDH: Q(X)' (256 bits) is: ssl_cli.c:2977: e8 dd a7 e4 3d f4 43 c0 1f 42 67 99 2f 1b bd a8 ssl_cli.c:2977: 10 03 3d 45 5f 3b f8 46 ff d6 b8 65 3c 13 6a 3b ssl_cli.c:2977: value of 'ECDH: Q(Y)' (256 bits) is: ssl_cli.c:2977: 9a f8 36 4d 19 01 01 02 d6 bb 51 4a 1d ec f1 7f ssl_cli.c:2977: 28 70 31 95 65 62 1e d6 8d 97 b6 cc 3f b4 9a 8e ssl_cli.c:3005: value of 'ECDH: z' (253 bits) is: ssl_cli.c:3005: 14 06 75 26 fd 2c 2e 3f ad cf 0c fe 6b df 66 7c ssl_cli.c:3005: c2 b7 54 7e 62 ea 4e 0b 93 d0 62 22 15 e6 db 43 ssl_tls.c:3184: => write handshake message ssl_tls.c:3343: => write record ssl_tls.c:3420: output record: msgtype = 22, version = [3:3], msglen = 70 ssl_tls.c:3425: dumping 'output record sent to network' (75 bytes) ssl_tls.c:3425: 0000: 16 03 03 00 46 10 00 00 42 41 04 e8 dd a7 e4 3d ....F...BA.....= .. .. .. .. .. .. .. .. .. .. ssl_tls.c:3425: 0040: 62 1e d6 8d 97 b6 cc 3f b4 9a 8e b......?... ssl_tls.c:2755: => flush output ssl_tls.c:2773: message length: 75, out_left: 75 ssl_tls.c:2779: ssl->f_send() returned 75 (-0xffffffb5) ssl_tls.c:2807: <= flush output ssl_tls.c:3476: <= write record ssl_tls.c:3320: <= write handshake message ssl_cli.c:3172: <= write client key exchange ssl_cli.c:3510: client state: 9 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:3224: => write certificate verify ssl_tls.c:0628: => derive keys ssl_tls.c:0705: dumping 'premaster secret' (32 bytes) ssl_tls.c:0705: 0000: 14 06 75 26 fd 2c 2e 3f ad cf 0c fe 6b df 66 7c ..u&.,.?....k.f| ssl_tls.c:0705: 0010: c2 b7 54 7e 62 ea 4e 0b 93 d0 62 22 15 e6 db 43 ..T~b.N...b"...C ssl_tls.c:0794: ciphersuite = TLS-ECDHE-RSA-WITH-AES-256-GCM-SHA384 ssl_tls.c:0796: dumping 'master secret' (48 bytes) ssl_tls.c:0796: 0000: 5a 15 26 c7 71 73 1a 2e 8c 0d 0e 55 d7 6f 7f b5 Z.&.qs.....U.o.. .. .. .. .. .. .. .. .. .. .. ssl_tls.c:0796: 0020: 24 bf 3f 51 ca e9 7b 66 99 61 cf a9 fb 61 e2 2f $.?Q..{f.a...a./ ssl_tls.c:0797: dumping 'random bytes' (64 bytes) ssl_tls.c:0797: 0000: d1 64 6e e1 0c 1f ac 75 77 eb d7 02 24 dd a7 da .dn....uw...$... .. .. .. .. .. .. .. .. .. .. ssl_tls.c:0797: 0030: 4b 0c 20 64 d3 22 d0 ee 5e 3b 83 24 a7 01 ec d9 K. d."..^;.$.... ssl_tls.c:0798: dumping 'key block' (256 bytes) ssl_tls.c:0798: 0000: 5d b4 7a 60 2e 5b f8 fb 8f e4 75 22 9a b4 8c 04 ].z`.[....u".... .. .. .. .. .. .. .. .. .. .. ssl_tls.c:0798: 00f0: 53 af 8e 78 d0 03 ca 26 b7 43 ee c6 aa 0e 71 88 S..x...&.C....q. ssl_tls.c:0919: keylen: 32, minlen: 24, ivlen: 12, maclen: 0 ssl_tls.c:1116: <= derive keys ssl_cli.c:3253: <= skip write certificate verify ssl_cli.c:3510: client state: 10 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5879: => write change cipher spec ssl_tls.c:3184: => write handshake message ssl_tls.c:3343: => write record ssl_tls.c:3420: output record: msgtype = 20, version = [3:3], msglen = 1 ssl_tls.c:3425: dumping 'output record sent to network' (6 bytes) ssl_tls.c:3425: 0000: 14 03 03 00 01 01 ...... ssl_tls.c:2755: => flush output ssl_tls.c:2773: message length: 6, out_left: 6 ssl_tls.c:2779: ssl->f_send() returned 6 (-0xfffffffa) ssl_tls.c:2807: <= flush output ssl_tls.c:3476: <= write record ssl_tls.c:3320: <= write handshake message ssl_tls.c:5893: <= write change cipher spec ssl_cli.c:3510: client state: 11 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:6398: => write finished ssl_tls.c:6272: => calc finished tls sha384 ssl_tls.c:6283: dumping 'finished sha512 state' (64 bytes) ssl_tls.c:6283: 0000: e2 6c 37 56 90 66 0a f8 1c c7 26 d0 49 a9 87 52 .l7V.f....&.I..R .. .. .. .. .. .. .. .. .. .. ssl_tls.c:6283: 0030: 85 b3 04 84 77 e5 02 b0 53 d7 31 b4 c4 e4 08 c0 ....w...S.1..... ssl_tls.c:6296: dumping 'calc finished result' (12 bytes) ssl_tls.c:6296: 0000: c4 6a dd c2 9b a7 75 28 ff 53 5a 3f .j....u(.SZ? ssl_tls.c:6302: <= calc finished ssl_tls.c:6443: switching to new transform spec for outbound data ssl_tls.c:3184: => write handshake message ssl_tls.c:3343: => write record ssl_tls.c:1445: => encrypt buf ssl_tls.c:1455: dumping 'before encrypt: output payload' (16 bytes) ssl_tls.c:1455: 0000: 14 00 00 0c c4 6a dd c2 9b a7 75 28 ff 53 5a 3f .....j....u(.SZ? ssl_tls.c:1574: dumping 'additional data for AEAD' (13 bytes) ssl_tls.c:1574: 0000: 00 00 00 00 00 00 00 00 16 03 03 00 10 ............. ssl_tls.c:1604: dumping 'IV used (internal)' (12 bytes) ssl_tls.c:1604: 0000: a0 9a 1f cb 00 00 00 00 00 00 00 00 ............ ssl_tls.c:1606: dumping 'IV used (transmitted)' (8 bytes) ssl_tls.c:1606: 0000: 00 00 00 00 00 00 00 00 ........ ssl_tls.c:1616: before encrypt: msglen = 24, including 0 bytes of padding ssl_tls.c:1643: dumping 'after encrypt: tag' (16 bytes) ssl_tls.c:1643: 0000: e7 10 1d 99 f6 b6 a5 40 de e8 c0 d5 ec 48 de 6e .......@.....H.n ssl_tls.c:1781: <= encrypt buf ssl_tls.c:3420: output record: msgtype = 22, version = [3:3], msglen = 40 ssl_tls.c:3425: dumping 'output record sent to network' (45 bytes) ssl_tls.c:3425: 0000: 16 03 03 00 28 00 00 00 00 00 00 00 00 00 73 7e ....(.........s~ .. .. .. .. .. .. .. .. .. .. ssl_tls.c:3425: 0020: 99 f6 b6 a5 40 de e8 c0 d5 ec 48 de 6e ....@.....H.n ssl_tls.c:2755: => flush output ssl_tls.c:2773: message length: 45, out_left: 45 ssl_tls.c:2779: ssl->f_send() returned 45 (-0xffffffd3) ssl_tls.c:2807: <= flush output ssl_tls.c:3476: <= write record ssl_tls.c:3320: <= write handshake message ssl_tls.c:6507: <= write finished ssl_cli.c:3510: client state: 12 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5902: => parse change cipher spec ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:8094: <= handshake ssl_tls.c:8084: => handshake ssl_cli.c:3510: client state: 12 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5902: => parse change cipher spec ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 15 03 03 00 02 ..... ssl_tls.c:4053: input record: msgtype = 21, version = [3:3], msglen = 2 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 7 ssl_tls.c:2720: in_left: 5, nb_want: 7 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 2 (-0xfffffffe) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (7 bytes) ssl_tls.c:4232: 0000: 15 03 03 00 02 02 28 ......( ssl_tls.c:5169: got an alert message, type: [2:40] ssl_tls.c:5177: is a fatal alert message (msg 40) ssl_tls.c:4369: mbedtls_ssl_handle_message_type() returned -30592 (-0x7780) ssl_tls.c:5906: mbedtls_ssl_read_record() returned -30592 (-0x7780) ssl_tls.c:8094: <= handshake mbedtls_ssl_handshake failed: -30592 -- mbed-tls mailing list mbed-tls(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls

5 years, 11 months

2
1
0 0

Re: [mbed-tls] Set an MPI and print it

by Manuel Pegourie-Gonnard

Hi Youssouf, I think you're looking for mbedtls_mpi_write_file() - just pass NULL as the file argument to write to stdout. You can use the radix argument to print out hex or decimal. Regards, Manuel. ________________________________ From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of youssouf sokhona via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> Sent: 25 August 2020 15:40 To: mbed-tls(a)lists.trustedfirmware.org <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] Set an MPI and print it Hi everyone, I think you all are fine. I am a beginner on mbedtls, and I wanted to set a dhm context. So, at first, I just want to set the value of the prime P, and the generator G. So to that I wrote the function below : [cid:image001.png@01D67AF5.D43FDE60] To check if it is correctly set, I wanted to print it to see. However, it is not the case. Do you know how to set and print the value ? Thanks, and have a good day Best regards, YS

5 years, 11 months

1
0
0 0

mbedtls handshake failed

by Manu Abraham

Greetings, I am trying to connect from a STM32H7 MCU to a mosquitto peer, Can someone please help me to fix this issue that I have ? I have used the DES3 cipher to create the keys .. openssl genrsa -des3 -out test_ca.key 2048 .. Fiddled quite a bit with buffers, stack, heap and mbedtls config, eventually the communication appears to be working, but the handshake appears to fail. At the client MCU side, I see the mbedtls_ssl_handshake failed message with a return value of 0x7780 Additionally, I do see this message too: ssl_tls.c:5169: got an alert message, type: [2:40] ssl_tls.c:5177: is a fatal alert message (msg 40) But unfortunately, I am unable to make out what the error message means. At the peer, this is what i do see: 1598367067: New connection from 192.168.1.33 on port 8883. 1598367074: OpenSSL Error: error:1417C0C7:SSL routines:tls_process_client_certif icate:peer did not return a certificate 1598367074: Socket error on client <unknown>, disconnecting. 1598368366: mosquitto version 1.6.7 terminating Someone, Please help ! Thanks, Manu ssl_tls.c:8084: => handshake ssl_cli.c:3510: client state: 0 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:3510: client state: 1 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:0774: => write client hello ssl_cli.c:0811: client hello, max version: [3:3] ssl_cli.c:0821: dumping 'client hello, random bytes' (32 bytes) ssl_cli.c:0821: 0000: 3c ce d6 f9 48 cc 7d 5d 77 24 74 f2 1d 9f 8b aa <...H.}]w$t..... ssl_cli.c:0821: 0010: 4b 0c 20 64 d3 22 d0 ee 5e 3b 83 24 a7 01 ec d9 K. d."..^;.$.... ssl_cli.c:0874: client hello, session id len.: 0 ssl_cli.c:0875: dumping 'client hello, session id' (0 bytes) ssl_cli.c:0921: client hello, add ciphersuite: c02c ssl_cli.c:0921: client hello, add ciphersuite: c02b ssl_cli.c:0921: client hello, add ciphersuite: c030 ssl_cli.c:0921: client hello, add ciphersuite: c02f ssl_cli.c:0934: client hello, got 4 ciphersuites (excluding SCSVs) ssl_cli.c:0943: adding EMPTY_RENEGOTIATION_INFO_SCSV ssl_cli.c:0992: client hello, compress len.: 1 ssl_cli.c:0993: client hello, compress alg.: 0 ssl_cli.c:0186: client hello, adding signature_algorithms extension ssl_cli.c:0271: client hello, adding supported_elliptic_curves extension ssl_cli.c:0336: client hello, adding supported_point_formats extension ssl_cli.c:1070: client hello, total extension length: 38 ssl_tls.c:3184: => write handshake message ssl_tls.c:3343: => write record ssl_tls.c:3420: output record: msgtype = 22, version = [3:3], msglen = 93 ssl_tls.c:3425: dumping 'output record sent to network' (98 bytes) ssl_tls.c:3425: 0000: 16 03 03 00 5d 01 00 00 59 03 03 3c ce d6 f9 48 ....]...Y..<...H .. .. .. .. .. .. .. .. .. .. ssl_tls.c:3425: 0050: 03 01 00 0a 00 06 00 04 00 18 00 17 00 0b 00 02 ................ ssl_tls.c:3425: 0060: 01 00 .. ssl_tls.c:2755: => flush output ssl_tls.c:2773: message length: 98, out_left: 98 ssl_tls.c:2779: ssl->f_send() returned 98 (-0xffffff9e) ssl_tls.c:2807: <= flush output ssl_tls.c:3476: <= write record ssl_tls.c:3320: <= write handshake message ssl_cli.c:1106: <= write client hello ssl_cli.c:3510: client state: 2 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:1499: => parse server hello ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:8094: <= handshake ssl_tls.c:8084: => handshake ssl_cli.c:3510: client state: 2 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:1499: => parse server hello ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 00 59 ....Y ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 89 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 94 ssl_tls.c:2720: in_left: 5, nb_want: 94 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 89 (-0xffffffa7) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (94 bytes) ssl_tls.c:4232: 0000: 16 03 03 00 59 02 00 00 55 03 03 d1 64 6e e1 0c ....Y...U...dn.. .. .. .. .. .. .. .. .. .. .. ssl_tls.c:4232: 0050: 0d ff 01 00 01 00 00 0b 00 04 03 00 01 02 .............. ssl_tls.c:3624: handshake message: msglen = 89, type = 2, hslen = 89 ssl_tls.c:4385: <= read record ssl_cli.c:1579: dumping 'server hello, version' (2 bytes) ssl_cli.c:1579: 0000: 03 03 .. ssl_cli.c:1600: server hello, current time: 3513020129 ssl_cli.c:1610: dumping 'server hello, random bytes' (32 bytes) ssl_cli.c:1610: 0000: d1 64 6e e1 0c 1f ac 75 77 eb d7 02 24 dd a7 da .dn....uw...$... ssl_cli.c:1610: 0010: 48 f3 50 43 34 10 d8 d9 44 4f 57 4e 47 52 44 01 H.PC4...DOWNGRD. ssl_cli.c:1690: server hello, session id len.: 32 ssl_cli.c:1691: dumping 'server hello, session id' (32 bytes) ssl_cli.c:1691: 0000: 90 8f cc f8 31 63 81 ae aa bf a9 b9 61 1e 78 f6 ....1c......a.x. ssl_cli.c:1691: 0010: 79 b8 26 66 51 99 f4 50 45 d4 21 9b 22 24 4c 63 y.&fQ..PE.!."$Lc ssl_cli.c:1728: no session has been resumed ssl_cli.c:1731: server hello, chosen ciphersuite: c030 ssl_cli.c:1732: server hello, compress alg.: 0 ssl_cli.c:1764: server hello, chosen ciphersuite: TLS-ECDHE-RSA-WITH-AES-256-GCM-SHA384 ssl_cli.c:1789: server hello, total extension length: 13 ssl_cli.c:1809: found renegotiation extension ssl_cli.c:1888: found supported_point_formats extension ssl_cli.c:1292: point format selected: 0 ssl_cli.c:1978: <= parse server hello ssl_cli.c:3510: client state: 3 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5655: => parse certificate ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 07 80 ..... ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 1920 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 1925 ssl_tls.c:2720: in_left: 5, nb_want: 1925 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 1361 (-0xfffffaaf) ssl_tls.c:2720: in_left: 1366, nb_want: 1925 ssl_tls.c:8094: <= handshake ssl_tls.c:8084: => handshake ssl_cli.c:3510: client state: 3 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5655: => parse certificate ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 1366, nb_want: 5 ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 07 80 ..... ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 1920 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 1366, nb_want: 1925 ssl_tls.c:2720: in_left: 1366, nb_want: 1925 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 559 (-0xfffffdd1) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (1925 bytes) ssl_tls.c:4232: 0000: 16 03 03 07 80 0b 00 07 7c 00 07 79 00 03 90 30 ........|..y...0 .. .. .. .. .. .. .. .. .. .. ssl_tls.c:4232: 0770: df d8 30 17 65 70 2a 02 54 9a 4c cf b1 51 04 25 ..0.ep*.T.L..Q.% ssl_tls.c:4232: 0780: 83 2c ab dd 46 .,..F ssl_tls.c:3624: handshake message: msglen = 1920, type = 11, hslen = 1920 ssl_tls.c:4385: <= read record ssl_tls.c:5606: peer certificate #1: ssl_tls.c:5606: cert. version : 1 ssl_tls.c:5606: serial number : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: issuer name : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: subject name : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: issued on : 2020-08-15 09:12:30 ssl_tls.c:5606: expires on : 2030-08-13 09:12:30 ssl_tls.c:5606: signed using : RSA with SHA-256 ssl_tls.c:5606: RSA key size : 2048 bits ssl_tls.c:5606: value of 'crt->rsa.N' (2048 bits) is: ssl_tls.c:5606: c9 93 0d f4 7b 93 95 8f 4d ec bb 77 46 82 48 6d .. .. .. .. .. .. .. .. .. .. ssl_tls.c:5606: 0f 00 85 cf c9 40 b0 f8 b2 df 1b 75 bd 2e 95 43 ssl_tls.c:5606: value of 'crt->rsa.E' (17 bits) is: ssl_tls.c:5606: 01 00 01 ssl_tls.c:5606: peer certificate #2: ssl_tls.c:5606: cert. version : 3 ssl_tls.c:5606: serial number : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: issuer name : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: subject name : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ssl_tls.c:5606: issued on : 2020-08-15 08:54:30 ssl_tls.c:5606: expires on : 2030-08-13 08:54:30 ssl_tls.c:5606: signed using : RSA with SHA-256 ssl_tls.c:5606: RSA key size : 2048 bits ssl_tls.c:5606: basic constraints : CA=true ssl_tls.c:5606: value of 'crt->rsa.N' (2048 bits) is: ssl_tls.c:5606: c4 e2 4b 37 45 4a 36 e5 b0 14 f7 fa 76 1d c4 29 .. .. .. .. .. .. .. .. .. .. ssl_tls.c:5606: 43 7c 19 f2 b0 dc ef 69 cf 13 c4 cb fa 80 92 f1 ssl_tls.c:5606: value of 'crt->rsa.E' (17 bits) is: ssl_tls.c:5606: 01 00 01 ssl_tls.c:5856: Certificate verification flags clear ssl_tls.c:5863: <= parse certificate ssl_cli.c:3510: client state: 4 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:2336: => parse server key exchange ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 01 4d ....M ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 333 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 338 ssl_tls.c:2720: in_left: 5, nb_want: 338 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 333 (-0xfffffeb3) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (338 bytes) ssl_tls.c:4232: 0000: 16 03 03 01 4d 0c 00 01 49 03 00 17 41 04 6e 49 ....M...I...A.nI .. .. .. .. .. .. .. .. .. .. ssl_tls.c:4232: 0140: c4 4b 34 2f 83 5f 98 17 39 5e 6e 4d 56 f4 c1 4c .K4/._..9^nMV..L ssl_tls.c:4232: 0150: 39 0f 9. ssl_tls.c:3624: handshake message: msglen = 333, type = 12, hslen = 333 ssl_tls.c:4385: <= read record ssl_cli.c:2424: dumping 'server key exchange' (329 bytes) ssl_cli.c:2424: 0000: 03 00 17 41 04 6e 49 4b 1c 4e 7b 2b ff c3 c9 9b ...A.nIK.N{+.... .. .. .. .. .. .. .. .. .. .. ssl_cli.c:2424: 0130: d9 33 d2 6e a7 05 ca c4 4b 34 2f 83 5f 98 17 39 .3.n....K4/._..9 ssl_cli.c:2424: 0140: 5e 6e 4d 56 f4 c1 4c 39 0f ^nMV..L9. ssl_cli.c:2044: ECDH curve: secp256r1 ssl_cli.c:2054: value of 'ECDH: Qp(X)' (255 bits) is: ssl_cli.c:2054: 6e 49 4b 1c 4e 7b 2b ff c3 c9 9b 81 29 4d a8 92 ssl_cli.c:2054: af c2 77 2b 3b c6 26 ba d4 c7 a2 2d 83 78 e3 54 ssl_cli.c:2054: value of 'ECDH: Qp(Y)' (256 bits) is: ssl_cli.c:2054: d6 91 fe 18 70 fb bc b6 c7 aa 67 1c 08 8b 4d 58 ssl_cli.c:2054: a4 70 59 97 90 23 8d 4b b6 24 4e 1a 7e 13 f2 d1 ssl_cli.c:2278: Server used SignatureAlgorithm 1 ssl_cli.c:2279: Server used HashAlgorithm 4 ssl_cli.c:2580: dumping 'signature' (256 bytes) ssl_cli.c:2580: 0000: b3 88 25 7f 3f 6b cf 7e 03 de 11 5b 4f 47 e9 6e ..%.?k.~...[OG.n .. .. .. .. .. .. .. .. .. .. ssl_cli.c:2580: 00f0: 34 2f 83 5f 98 17 39 5e 6e 4d 56 f4 c1 4c 39 0f 4/._..9^nMV..L9. ssl_cli.c:2616: dumping 'parameters hash' (32 bytes) ssl_cli.c:2616: 0000: bc 4e 7e a6 a6 02 76 66 2c da 19 6c ea 5a aa df .N~...vf,..l.Z.. ssl_cli.c:2616: 0010: ae 3a ff e9 34 c6 d1 72 98 b4 f3 7d b8 71 11 65 .:..4..r...}.q.e ssl_cli.c:2664: <= parse server key exchange ssl_cli.c:3510: client state: 5 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:2697: => parse certificate request ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 00 3a ....: ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 58 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 63 ssl_tls.c:2720: in_left: 5, nb_want: 63 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 58 (-0xffffffc6) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (63 bytes) ssl_tls.c:4232: 0000: 16 03 03 00 3a 0d 00 00 36 03 01 02 40 00 2e 04 ....:...6...@... .. .. .. .. .. .. .. .. .. .. ssl_tls.c:4232: 0030: 01 02 01 03 02 02 02 04 02 05 02 06 02 00 00 ............... ssl_tls.c:3624: handshake message: msglen = 58, type = 13, hslen = 58 ssl_tls.c:4385: <= read record ssl_cli.c:2723: got a certificate request ssl_cli.c:2823: Supported Signature Algorithm found: 4,3 ssl_cli.c:2823: Supported Signature Algorithm found: 5,3 ssl_cli.c:2823: Supported Signature Algorithm found: 6,3 ssl_cli.c:2823: Supported Signature Algorithm found: 8,7 ssl_cli.c:2823: Supported Signature Algorithm found: 8,8 ssl_cli.c:2823: Supported Signature Algorithm found: 8,9 ssl_cli.c:2823: Supported Signature Algorithm found: 8,10 ssl_cli.c:2823: Supported Signature Algorithm found: 8,11 ssl_cli.c:2823: Supported Signature Algorithm found: 8,4 ssl_cli.c:2823: Supported Signature Algorithm found: 8,5 ssl_cli.c:2823: Supported Signature Algorithm found: 8,6 ssl_cli.c:2823: Supported Signature Algorithm found: 4,1 ssl_cli.c:2823: Supported Signature Algorithm found: 5,1 ssl_cli.c:2823: Supported Signature Algorithm found: 6,1 ssl_cli.c:2823: Supported Signature Algorithm found: 3,3 ssl_cli.c:2823: Supported Signature Algorithm found: 2,3 ssl_cli.c:2823: Supported Signature Algorithm found: 3,1 ssl_cli.c:2823: Supported Signature Algorithm found: 2,1 ssl_cli.c:2823: Supported Signature Algorithm found: 3,2 ssl_cli.c:2823: Supported Signature Algorithm found: 2,2 ssl_cli.c:2823: Supported Signature Algorithm found: 4,2 ssl_cli.c:2823: Supported Signature Algorithm found: 5,2 ssl_cli.c:2823: Supported Signature Algorithm found: 6,2 ssl_cli.c:2846: <= parse certificate request ssl_cli.c:3510: client state: 6 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:2856: => parse server hello done ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 16 03 03 00 04 ..... ssl_tls.c:4053: input record: msgtype = 22, version = [3:3], msglen = 4 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 9 ssl_tls.c:2720: in_left: 5, nb_want: 9 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 4 (-0xfffffffc) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (9 bytes) ssl_tls.c:4232: 0000: 16 03 03 00 04 0e 00 00 00 ......... ssl_tls.c:3624: handshake message: msglen = 4, type = 14, hslen = 4 ssl_tls.c:4385: <= read record ssl_cli.c:2886: <= parse server hello done ssl_cli.c:3510: client state: 7 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5329: => write certificate ssl_tls.c:3184: => write handshake message ssl_tls.c:3343: => write record ssl_tls.c:3420: output record: msgtype = 22, version = [3:3], msglen = 7 ssl_tls.c:3425: dumping 'output record sent to network' (12 bytes) ssl_tls.c:3425: 0000: 16 03 03 00 07 0b 00 00 03 00 00 00 ............ ssl_tls.c:2755: => flush output ssl_tls.c:2773: message length: 12, out_left: 12 ssl_tls.c:2779: ssl->f_send() returned 12 (-0xfffffff4) ssl_tls.c:2807: <= flush output ssl_tls.c:3476: <= write record ssl_tls.c:3320: <= write handshake message ssl_tls.c:5433: <= write certificate ssl_cli.c:3510: client state: 8 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:2898: => write client key exchange ssl_cli.c:2977: value of 'ECDH: Q(X)' (256 bits) is: ssl_cli.c:2977: e8 dd a7 e4 3d f4 43 c0 1f 42 67 99 2f 1b bd a8 ssl_cli.c:2977: 10 03 3d 45 5f 3b f8 46 ff d6 b8 65 3c 13 6a 3b ssl_cli.c:2977: value of 'ECDH: Q(Y)' (256 bits) is: ssl_cli.c:2977: 9a f8 36 4d 19 01 01 02 d6 bb 51 4a 1d ec f1 7f ssl_cli.c:2977: 28 70 31 95 65 62 1e d6 8d 97 b6 cc 3f b4 9a 8e ssl_cli.c:3005: value of 'ECDH: z' (253 bits) is: ssl_cli.c:3005: 14 06 75 26 fd 2c 2e 3f ad cf 0c fe 6b df 66 7c ssl_cli.c:3005: c2 b7 54 7e 62 ea 4e 0b 93 d0 62 22 15 e6 db 43 ssl_tls.c:3184: => write handshake message ssl_tls.c:3343: => write record ssl_tls.c:3420: output record: msgtype = 22, version = [3:3], msglen = 70 ssl_tls.c:3425: dumping 'output record sent to network' (75 bytes) ssl_tls.c:3425: 0000: 16 03 03 00 46 10 00 00 42 41 04 e8 dd a7 e4 3d ....F...BA.....= .. .. .. .. .. .. .. .. .. .. ssl_tls.c:3425: 0040: 62 1e d6 8d 97 b6 cc 3f b4 9a 8e b......?... ssl_tls.c:2755: => flush output ssl_tls.c:2773: message length: 75, out_left: 75 ssl_tls.c:2779: ssl->f_send() returned 75 (-0xffffffb5) ssl_tls.c:2807: <= flush output ssl_tls.c:3476: <= write record ssl_tls.c:3320: <= write handshake message ssl_cli.c:3172: <= write client key exchange ssl_cli.c:3510: client state: 9 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_cli.c:3224: => write certificate verify ssl_tls.c:0628: => derive keys ssl_tls.c:0705: dumping 'premaster secret' (32 bytes) ssl_tls.c:0705: 0000: 14 06 75 26 fd 2c 2e 3f ad cf 0c fe 6b df 66 7c ..u&.,.?....k.f| ssl_tls.c:0705: 0010: c2 b7 54 7e 62 ea 4e 0b 93 d0 62 22 15 e6 db 43 ..T~b.N...b"...C ssl_tls.c:0794: ciphersuite = TLS-ECDHE-RSA-WITH-AES-256-GCM-SHA384 ssl_tls.c:0796: dumping 'master secret' (48 bytes) ssl_tls.c:0796: 0000: 5a 15 26 c7 71 73 1a 2e 8c 0d 0e 55 d7 6f 7f b5 Z.&.qs.....U.o.. .. .. .. .. .. .. .. .. .. .. ssl_tls.c:0796: 0020: 24 bf 3f 51 ca e9 7b 66 99 61 cf a9 fb 61 e2 2f $.?Q..{f.a...a./ ssl_tls.c:0797: dumping 'random bytes' (64 bytes) ssl_tls.c:0797: 0000: d1 64 6e e1 0c 1f ac 75 77 eb d7 02 24 dd a7 da .dn....uw...$... .. .. .. .. .. .. .. .. .. .. ssl_tls.c:0797: 0030: 4b 0c 20 64 d3 22 d0 ee 5e 3b 83 24 a7 01 ec d9 K. d."..^;.$.... ssl_tls.c:0798: dumping 'key block' (256 bytes) ssl_tls.c:0798: 0000: 5d b4 7a 60 2e 5b f8 fb 8f e4 75 22 9a b4 8c 04 ].z`.[....u".... .. .. .. .. .. .. .. .. .. .. ssl_tls.c:0798: 00f0: 53 af 8e 78 d0 03 ca 26 b7 43 ee c6 aa 0e 71 88 S..x...&.C....q. ssl_tls.c:0919: keylen: 32, minlen: 24, ivlen: 12, maclen: 0 ssl_tls.c:1116: <= derive keys ssl_cli.c:3253: <= skip write certificate verify ssl_cli.c:3510: client state: 10 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5879: => write change cipher spec ssl_tls.c:3184: => write handshake message ssl_tls.c:3343: => write record ssl_tls.c:3420: output record: msgtype = 20, version = [3:3], msglen = 1 ssl_tls.c:3425: dumping 'output record sent to network' (6 bytes) ssl_tls.c:3425: 0000: 14 03 03 00 01 01 ...... ssl_tls.c:2755: => flush output ssl_tls.c:2773: message length: 6, out_left: 6 ssl_tls.c:2779: ssl->f_send() returned 6 (-0xfffffffa) ssl_tls.c:2807: <= flush output ssl_tls.c:3476: <= write record ssl_tls.c:3320: <= write handshake message ssl_tls.c:5893: <= write change cipher spec ssl_cli.c:3510: client state: 11 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:6398: => write finished ssl_tls.c:6272: => calc finished tls sha384 ssl_tls.c:6283: dumping 'finished sha512 state' (64 bytes) ssl_tls.c:6283: 0000: e2 6c 37 56 90 66 0a f8 1c c7 26 d0 49 a9 87 52 .l7V.f....&.I..R .. .. .. .. .. .. .. .. .. .. ssl_tls.c:6283: 0030: 85 b3 04 84 77 e5 02 b0 53 d7 31 b4 c4 e4 08 c0 ....w...S.1..... ssl_tls.c:6296: dumping 'calc finished result' (12 bytes) ssl_tls.c:6296: 0000: c4 6a dd c2 9b a7 75 28 ff 53 5a 3f .j....u(.SZ? ssl_tls.c:6302: <= calc finished ssl_tls.c:6443: switching to new transform spec for outbound data ssl_tls.c:3184: => write handshake message ssl_tls.c:3343: => write record ssl_tls.c:1445: => encrypt buf ssl_tls.c:1455: dumping 'before encrypt: output payload' (16 bytes) ssl_tls.c:1455: 0000: 14 00 00 0c c4 6a dd c2 9b a7 75 28 ff 53 5a 3f .....j....u(.SZ? ssl_tls.c:1574: dumping 'additional data for AEAD' (13 bytes) ssl_tls.c:1574: 0000: 00 00 00 00 00 00 00 00 16 03 03 00 10 ............. ssl_tls.c:1604: dumping 'IV used (internal)' (12 bytes) ssl_tls.c:1604: 0000: a0 9a 1f cb 00 00 00 00 00 00 00 00 ............ ssl_tls.c:1606: dumping 'IV used (transmitted)' (8 bytes) ssl_tls.c:1606: 0000: 00 00 00 00 00 00 00 00 ........ ssl_tls.c:1616: before encrypt: msglen = 24, including 0 bytes of padding ssl_tls.c:1643: dumping 'after encrypt: tag' (16 bytes) ssl_tls.c:1643: 0000: e7 10 1d 99 f6 b6 a5 40 de e8 c0 d5 ec 48 de 6e .......@.....H.n ssl_tls.c:1781: <= encrypt buf ssl_tls.c:3420: output record: msgtype = 22, version = [3:3], msglen = 40 ssl_tls.c:3425: dumping 'output record sent to network' (45 bytes) ssl_tls.c:3425: 0000: 16 03 03 00 28 00 00 00 00 00 00 00 00 00 73 7e ....(.........s~ .. .. .. .. .. .. .. .. .. .. ssl_tls.c:3425: 0020: 99 f6 b6 a5 40 de e8 c0 d5 ec 48 de 6e ....@.....H.n ssl_tls.c:2755: => flush output ssl_tls.c:2773: message length: 45, out_left: 45 ssl_tls.c:2779: ssl->f_send() returned 45 (-0xffffffd3) ssl_tls.c:2807: <= flush output ssl_tls.c:3476: <= write record ssl_tls.c:3320: <= write handshake message ssl_tls.c:6507: <= write finished ssl_cli.c:3510: client state: 12 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5902: => parse change cipher spec ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:8094: <= handshake ssl_tls.c:8084: => handshake ssl_cli.c:3510: client state: 12 ssl_tls.c:2755: => flush output ssl_tls.c:2767: <= flush output ssl_tls.c:5902: => parse change cipher spec ssl_tls.c:4311: => read record ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 0, nb_want: 5 ssl_tls.c:2720: in_left: 0, nb_want: 5 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 5 (-0xfffffffb) ssl_tls.c:2742: <= fetch input ssl_tls.c:4047: dumping 'input record header' (5 bytes) ssl_tls.c:4047: 0000: 15 03 03 00 02 ..... ssl_tls.c:4053: input record: msgtype = 21, version = [3:3], msglen = 2 ssl_tls.c:2536: => fetch input ssl_tls.c:2696: in_left: 5, nb_want: 7 ssl_tls.c:2720: in_left: 5, nb_want: 7 ssl_tls.c:2722: ssl->f_recv(_timeout)() returned 2 (-0xfffffffe) ssl_tls.c:2742: <= fetch input ssl_tls.c:4232: dumping 'input record from network' (7 bytes) ssl_tls.c:4232: 0000: 15 03 03 00 02 02 28 ......( ssl_tls.c:5169: got an alert message, type: [2:40] ssl_tls.c:5177: is a fatal alert message (msg 40) ssl_tls.c:4369: mbedtls_ssl_handle_message_type() returned -30592 (-0x7780) ssl_tls.c:5906: mbedtls_ssl_read_record() returned -30592 (-0x7780) ssl_tls.c:8094: <= handshake mbedtls_ssl_handshake failed: -30592

5 years, 11 months

1
0
0 0

Set an MPI and print it

by youssouf sokhona

Hi everyone, I think you all are fine. I am a beginner on mbedtls, and I wanted to set a dhm context. So, at first, I just want to set the value of the prime P, and the generator G. So to that I wrote the function below : [cid:image001.png@01D67AF5.D43FDE60] To check if it is correctly set, I wanted to print it to see. However, it is not the case. Do you know how to set and print the value ? Thanks, and have a good day Best regards, YS

5 years, 11 months

1
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0 0

undefined reference….

by youssouf sokhona

Hello everybody, I hope you are going well I am creating a diffie Hellman key exchange program, so I am using functions like « mbedtls_dhm_init() » or « mbedtls_ctr_drbg_init() « for example. However, even if I defined the CTR_DRBG & the DHM_C module in the config.h file, and the header in my C file, I Always have error like that : [cid:image002.png@01D6770C.20370D40] Can someone help me to find out where does it come from ? Because I don’t know at all. Thanks, and have a good day

5 years, 11 months

1
0
0 0

Printf with %z and %hh format specifiers.

by Paul Elliott

Hi all, I am placing into review a patch ( https://github.com/ARMmbed/mbedtls/pull/3579) which replaces some invalid size printf format specifiers, mostly for size_t. This patch utilises %zu and %hhu, both of which were only introduced in C99, which I know caused some issues with compiler compatibility at the time. The problem with printf and size_t as most will know, is that its a different size in 32 bit and 64 bit, which is what %z was introduced to safely fix. My question is to whether there is anyone on the list that is using a compiler that might not handle these specifiers, for whom this patch would presumably be something of an issue. I am admittedly hoping this is not the case, given the age of the spec, but thought it best to ask. Thanks in advance, Paul.

5 years, 11 months

1
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0 0

Re: [mbed-tls] Custom PSA API Implementation for mbedTLS tests

by Dan Handley

Hi Murat What you request may be possible with invasive changes but it is not a design goal for the PSA Cryptography API implementation in Mbed TLS to be completely replaced with an alternative implementation, while allowing re-use of the Mbed TLS build system and tests. The focus instead is to develop and implement a PSA Cryptoprocessor Driver Interface, which will allow drivers for custom secure environments to be plugged into the core PSA Cryptography API implementation in Mbed TLS. An early version of the specification of that interface can be found here: https://github.com/ARMmbed/mbedtls/blob/development/docs/proposed/psa-drive… That specification and its implementation is under active development. Let us know if you would like to get involved. Regards Dan. From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> On Behalf Of Murat Cakmak via mbed-tls Sent: 14 August 2020 13:34 To: mbed-tls(a)lists.trustedfirmware.org Subject: [mbed-tls] Custom PSA API Implementation for mbedTLS tests Hi all, We have implemented the PSA Functional API for a custom secure environment which passes PSA Arch tests. Now we would like to run mbedtls tests (make check) on the PSA API if possible. When we run "make check", it includes and compiles library/psa_crypto.c file for mbedTLS's PSA API Implementation. Herein, we would like to compile our own psa_crypto.c implementation, does mbedtls build system allow us to include custom PSA API Implementation to run tests? Thank you. Murat

5 years, 11 months

1
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Re: [mbed-tls] MBEDTLS_ENTROPY_HARDWARE_ALT, mbedtls_ctr_drbg_seed() freezes ?

by Manu Abraham

Replying to my own post, I did dig in a bit more; It appears that it gets stuck in here within: int mbedtls_ctr_drbg_reseed( mbedtls_ctr_drbg_context *ctx, const unsigned char *additional, size_t len ) memset( seed, 0, MBEDTLS_CTR_DRBG_MAX_SEED_INPUT ); printf("(%d) %s: Done\r\n", __LINE__, __FUNCTION__); <---- line#412 /* * Gather entropy_len bytes of entropy to seed state */ if( 0 != ctx->f_entropy( ctx->p_entropy, seed, ctx->entropy_len ) ) <----- appears to be stuck in this callback f_entropy() { return( MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED ); } seedlen += ctx->entropy_len; printf("(%d) %s: Done\r\n", __LINE__, __FUNCTION__); <----- line #424 Sprinkling a few prints here and there, it looks thus: (174) tls_init: Initializing (178) tls_init: SSL initialize (181) tls_init: SSL Config initialized (184) tls_init: x509 CRT initialized (187) tls_init: DRBG initialized (190) tls_init: Entropy initialized (95) mbedtls_ctr_drbg_seed_entropy_len: AES initialized (112) mbedtls_ctr_drbg_seed_entropy_len: AES setkey enc (412) mbedtls_ctr_drbg_reseed: Done (1027) mbedtls_hardware_poll: Random Words: 128 Word: 834688558 Someone help ? Thanks, Manu On Mon, Aug 17, 2020 at 10:46 PM Manu Abraham via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> wrote: > > Greetings, > > I am new to the list, please do excuse me, in case of any list > specific etiquette issues. > > Trying to use a 1.6.1 release with a Cortex M7 port, specifically a STM32H7. > > After enabling MBEDTLS_ENTROPY_HARDWARE_ALT, did implement > mbedtls_hardware_poll() > > It looks thus, and it does appear to work from a hardware perspective: > > /** > * mbedtls_hardware_poll() > * Read random data from the Hardware RNG for entropy applications > */ > int mbedtls_hardware_poll(void *arg, > unsigned char *ent_buf, > size_t count, > size_t *ent_len) > { > register uint8_t i = 0; > uint32_t rand; > > if (!LL_RNG_IsEnabled(RNG)) > LL_RNG_Enable(RNG); /* Enable Random Number Generator */ > > for (i = 0; i < count; i++) { > while (!LL_RNG_IsActiveFlag_DRDY(RNG)) { } /* Wait for DRDY > flag to be raised */ > if ((LL_RNG_IsActiveFlag_CECS(RNG)) || > (LL_RNG_IsActiveFlag_SECS(RNG))) { /* Check error, if any */ > > /* Clock or Seed Error detected. Set Error */ > printf(" (%d) %s: Clock/Seed Error!\r\n", __LINE__, __FUNCTION__); > } > rand = LL_RNG_ReadRandData32(RNG); /* Read RNG data */ > memcpy(&(ent_buf[i * 4]), &rand, 4); /* *ent_len += 4 */ > } > LL_RNG_Disable(RNG); /* Stop random numbers generation */ > *ent_len = ((i + 1) * 4); > printf(" (%d) %s: Random Words: %d Word: %04d\r\n", > __LINE__, > __FUNCTION__, > count, > rand); > > return 0; > } > > The code which causes the problem is this, in my tls_init() > > int tls_init(void) > { > int ret; > > /* inspired by https://tls.mbed.org/kb/how-to/mbedtls-tutorial */ > const char *pers = "SYS-LWH7"; > > printf(" (%d) %s: Initializing\r\n", __LINE__, __FUNCTION__); > /* initialize descriptors */ > > mbedtls_ssl_init(&ssl); > printf(" (%d) %s: SSL initialize\r\n", __LINE__, __FUNCTION__); > > mbedtls_ssl_config_init(&conf); > printf(" (%d) %s: SSL Config initialized\r\n", __LINE__, __FUNCTION__); > > mbedtls_x509_crt_init(&cacert); > printf(" (%d) %s: x509 CRT initialized\r\n", __LINE__, __FUNCTION__); > > mbedtls_ctr_drbg_init(&ctr_drbg); > printf(" (%d) %s: DRBG initialized\r\n", __LINE__, __FUNCTION__); > > mbedtls_entropy_init(&entropy); > printf(" (%d) %s: Entropy initialized\r\n", __LINE__, __FUNCTION__); > > > ret = mbedtls_ctr_drbg_seed(&ctr_drbg, > mbedtls_entropy_func, > &entropy, > (const unsigned char *) pers, > strlen(pers)); > if (ret) { > > LWIP_DEBUGF(MQTT_APP_DEBUG_TRACE, > ("failed !\n mbedtls_ctr_drbg_seed returned %d\n", > ret)); > > printf(" (%d) %s: DRBG seed failed, ret=%d\r\n", __LINE__, > __FUNCTION__, ret); > return -1; > } > printf(" (%d) %s: DRBG seed returned:%d\r\n", __LINE__, __FUNCTION__, ret); > > /** > * The transport type determines if we are using > * TLS (MBEDTLS_SSL_TRANSPORT_STREAM) or > * DTLS (MBEDTLS_SSL_TRANSPORT_DATAGRAM). > */ > ret = mbedtls_ssl_config_defaults(&conf, > MBEDTLS_SSL_IS_CLIENT, > MBEDTLS_SSL_TRANSPORT_STREAM, > MBEDTLS_SSL_PRESET_DEFAULT); > if (ret) { > LWIP_DEBUGF(MQTT_APP_DEBUG_TRACE, > ("failed !\n mbedtls_ssl_config_defaults returned %d\n\n", > ret)); > > printf("(%d) %s: SSL config defaults failed, ret=%d\r\n", > __LINE__, __FUNCTION__, ret); > return -1; > } > printf("(%d) %s: SSL config defaults returned:%d\r\n", __LINE__, > __FUNCTION__, ret); > > ret = mbedtls_x509_crt_parse(&cacert, > (const unsigned char *)test_ca_crt, > test_ca_crt_len); > if (ret) > printf(" (%d) %s: failed!\n mbedtls_x509_crt_parse returned > %d\r\n", __LINE__, __FUNCTION__, ret); > else > printf(" (%d) %s: mbedtls_x509_crt_parse returned %d\r\n", > __LINE__, __FUNCTION__, ret); > > mbedtls_ssl_conf_ca_chain(&conf, &cacert, NULL); > mbedtls_ssl_conf_authmode(&conf, MBEDTLS_SSL_VERIFY_REQUIRED); > > /** > * The library needs to know which random engine > * to use and which debug function to use as callback. > */ > mbedtls_ssl_conf_rng(&conf, mbedtls_ctr_drbg_random, &ctr_drbg); > mbedtls_ssl_conf_dbg(&conf, my_debug, stdout); > mbedtls_ssl_setup(&ssl, &conf); > } > > > The output of which looks thus, in a serial terminal: > > (1217) print_dhcp_state: Try connect to Broker > (174) tls_init: Initializing > (178) tls_init: SSL initialize > (181) tls_init: SSL Config initialized > (184) tls_init: x509 CRT initialized > (187) tls_init: DRBG initialized > (190) tls_init: Entropy initialized > (1027) mbedtls_hardware_poll: Random Words: 128 Word: -558876895 > > > Any thoughts/ideas, what could be wrong ? > Any kind soul in here ? > > Thanks, > Manu > -- > mbed-tls mailing list > mbed-tls(a)lists.trustedfirmware.org > https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls

5 years, 12 months

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MBEDTLS_ENTROPY_HARDWARE_ALT, mbedtls_ctr_drbg_seed() freezes ?

by Manu Abraham

Greetings, I am new to the list, please do excuse me, in case of any list specific etiquette issues. Trying to use a 1.6.1 release with a Cortex M7 port, specifically a STM32H7. After enabling MBEDTLS_ENTROPY_HARDWARE_ALT, did implement mbedtls_hardware_poll() It looks thus, and it does appear to work from a hardware perspective: /** * mbedtls_hardware_poll() * Read random data from the Hardware RNG for entropy applications */ int mbedtls_hardware_poll(void *arg, unsigned char *ent_buf, size_t count, size_t *ent_len) { register uint8_t i = 0; uint32_t rand; if (!LL_RNG_IsEnabled(RNG)) LL_RNG_Enable(RNG); /* Enable Random Number Generator */ for (i = 0; i < count; i++) { while (!LL_RNG_IsActiveFlag_DRDY(RNG)) { } /* Wait for DRDY flag to be raised */ if ((LL_RNG_IsActiveFlag_CECS(RNG)) || (LL_RNG_IsActiveFlag_SECS(RNG))) { /* Check error, if any */ /* Clock or Seed Error detected. Set Error */ printf(" (%d) %s: Clock/Seed Error!\r\n", __LINE__, __FUNCTION__); } rand = LL_RNG_ReadRandData32(RNG); /* Read RNG data */ memcpy(&(ent_buf[i * 4]), &rand, 4); /* *ent_len += 4 */ } LL_RNG_Disable(RNG); /* Stop random numbers generation */ *ent_len = ((i + 1) * 4); printf(" (%d) %s: Random Words: %d Word: %04d\r\n", __LINE__, __FUNCTION__, count, rand); return 0; } The code which causes the problem is this, in my tls_init() int tls_init(void) { int ret; /* inspired by https://tls.mbed.org/kb/how-to/mbedtls-tutorial */ const char *pers = "SYS-LWH7"; printf(" (%d) %s: Initializing\r\n", __LINE__, __FUNCTION__); /* initialize descriptors */ mbedtls_ssl_init(&ssl); printf(" (%d) %s: SSL initialize\r\n", __LINE__, __FUNCTION__); mbedtls_ssl_config_init(&conf); printf(" (%d) %s: SSL Config initialized\r\n", __LINE__, __FUNCTION__); mbedtls_x509_crt_init(&cacert); printf(" (%d) %s: x509 CRT initialized\r\n", __LINE__, __FUNCTION__); mbedtls_ctr_drbg_init(&ctr_drbg); printf(" (%d) %s: DRBG initialized\r\n", __LINE__, __FUNCTION__); mbedtls_entropy_init(&entropy); printf(" (%d) %s: Entropy initialized\r\n", __LINE__, __FUNCTION__); ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy, (const unsigned char *) pers, strlen(pers)); if (ret) { LWIP_DEBUGF(MQTT_APP_DEBUG_TRACE, ("failed !\n mbedtls_ctr_drbg_seed returned %d\n", ret)); printf(" (%d) %s: DRBG seed failed, ret=%d\r\n", __LINE__, __FUNCTION__, ret); return -1; } printf(" (%d) %s: DRBG seed returned:%d\r\n", __LINE__, __FUNCTION__, ret); /** * The transport type determines if we are using * TLS (MBEDTLS_SSL_TRANSPORT_STREAM) or * DTLS (MBEDTLS_SSL_TRANSPORT_DATAGRAM). */ ret = mbedtls_ssl_config_defaults(&conf, MBEDTLS_SSL_IS_CLIENT, MBEDTLS_SSL_TRANSPORT_STREAM, MBEDTLS_SSL_PRESET_DEFAULT); if (ret) { LWIP_DEBUGF(MQTT_APP_DEBUG_TRACE, ("failed !\n mbedtls_ssl_config_defaults returned %d\n\n", ret)); printf("(%d) %s: SSL config defaults failed, ret=%d\r\n", __LINE__, __FUNCTION__, ret); return -1; } printf("(%d) %s: SSL config defaults returned:%d\r\n", __LINE__, __FUNCTION__, ret); ret = mbedtls_x509_crt_parse(&cacert, (const unsigned char *)test_ca_crt, test_ca_crt_len); if (ret) printf(" (%d) %s: failed!\n mbedtls_x509_crt_parse returned %d\r\n", __LINE__, __FUNCTION__, ret); else printf(" (%d) %s: mbedtls_x509_crt_parse returned %d\r\n", __LINE__, __FUNCTION__, ret); mbedtls_ssl_conf_ca_chain(&conf, &cacert, NULL); mbedtls_ssl_conf_authmode(&conf, MBEDTLS_SSL_VERIFY_REQUIRED); /** * The library needs to know which random engine * to use and which debug function to use as callback. */ mbedtls_ssl_conf_rng(&conf, mbedtls_ctr_drbg_random, &ctr_drbg); mbedtls_ssl_conf_dbg(&conf, my_debug, stdout); mbedtls_ssl_setup(&ssl, &conf); } The output of which looks thus, in a serial terminal: (1217) print_dhcp_state: Try connect to Broker (174) tls_init: Initializing (178) tls_init: SSL initialize (181) tls_init: SSL Config initialized (184) tls_init: x509 CRT initialized (187) tls_init: DRBG initialized (190) tls_init: Entropy initialized (1027) mbedtls_hardware_poll: Random Words: 128 Word: -558876895 Any thoughts/ideas, what could be wrong ? Any kind soul in here ? Thanks, Manu

5 years, 12 months

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Re: [mbed-tls] LTS roadmap and announcement channel?

by Manuel Pegourie-Gonnard

Hi Simon, Indeed while the migration is underway things can be a bit confusing, so let me try to clarify: * releases can be found at: https://github.com/ARMmbed/mbedtls/releases - near the top you'll alwys find the latest development release followed by the latest LTS releases. At this point it is unclear if releases are going to stay on github or if they would move to trustedfrimware.org in the future, but if anything changes, we'll announce it. * announcements about new releases and other important project events are made on the new Mbed-tls-announce mailing-list: https://github.com/ARMmbed/mbedtls/releases - if you're already subscribed to mbed-tls (this list), you don't need to subscribe to the "announce" mailing list in addition, as any post to "announce" is automatically cross-posted here ("announce" is for people who want a lower volume list). * I don't think we're currently making announcements about upcoming releases, but I know we considered that. Unfortunately I don't remember the details and the colleague who was working on improving our release process is on leave now. But it we start making such announcements, they'll be on the "announce" list. * We're currently planning 2.16.8 early in September. * If you have a large number of products deployed that depend on Mbed TLS (or indeed any other tf.org project) and would like to be notified in advance of upcoming security fixes, please see the following pages: https://developer.trustedfirmware.org/w/mbed-tls/security-center/ https://developer.trustedfirmware.org/w/collaboration/security_center/repor… https://developer.trustedfirmware.org/w/collaboration/security_center/trust… I hope this answers your questions, and feel free to ask otherwise. Manuel. ________________________________ From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of Simon Leet via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> Sent: 14 August 2020 15:13 To: mbed-tls(a)lists.trustedfirmware.org <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] LTS roadmap and announcement channel? Hi folks, I understand that https://tls.mbed.org/ has migrated under the umbrella of https://www.trustedfirmware.org/ but it’s not clear where I should turn to for information about the updates to the LTS versions. The https://tls.mbed.org/tech-updates blog used to announce LTS branch updates but seems defunct as of 2.16.7, and I can’t find equivalent information in https://developer.trustedfirmware.org/w/mbed-tls/roadmap/, https://github.com/ARMmbed/mbedtls/projects/2 or the generic https://www.trustedfirmware.org/blog/. Is there a new channel for information about upcoming LTS mbedtls releases so that users can plan their appropriate upgrade cycles? E.g. when is 2.16.8 roughly expected to be released? Is the new model for monitoring release announcements reliably going to be as a new tag on https://github.com/ARMmbed/mbedtls/tags? -Simon

5 years, 12 months

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MbedTLS_hardware_poll

by youssouf sokhona

Hi everyone, Hope you are still going well I am now working on MbedTLS to establish a key exchange with a BGM which has a TRNG , and I read that I have to implement myself a function called «mbedTLS_hardware_poll » But I have no idea to know how I can implement this function zlthough I read articles on the mbedtls.com about entropy site…. Can you help me, to know how I can implement this function ?

5 years, 12 months

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Test

by Manu Abraham

Test mail

5 years, 12 months

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Custom PSA API Implementation for mbedTLS tests

by murat＠za-ya.co

Hi all, We have implemented the PSA Functional API for a custom secure environment which passes PSA Arch tests. Now we would like to run mbedtls tests (make check) on the PSA API if possible. When we run "make check", it includes and compiles library/psa_crypto.c file for mbedTLS's PSA API Implementation. Herein, we would like to compile our own psa_crypto.c implementation, does mbedtls build system allow us to include custom PSA API Implementation to run tests? Thank you. Murat

5 years, 12 months

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LTS roadmap and announcement channel?

by Simon Leet

Hi folks, I understand that https://tls.mbed.org/ has migrated under the umbrella of https://www.trustedfirmware.org/ but it's not clear where I should turn to for information about the updates to the LTS versions. The https://tls.mbed.org/tech-updates blog used to announce LTS branch updates but seems defunct as of 2.16.7, and I can't find equivalent information in https://developer.trustedfirmware.org/w/mbed-tls/roadmap/, https://github.com/ARMmbed/mbedtls/projects/2 or the generic https://www.trustedfirmware.org/blog/. Is there a new channel for information about upcoming LTS mbedtls releases so that users can plan their appropriate upgrade cycles? E.g. when is 2.16.8 roughly expected to be released? Is the new model for monitoring release announcements reliably going to be as a new tag on https://github.com/ARMmbed/mbedtls/tags? -Simon

5 years, 12 months

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Re: [mbed-tls] Diffie Hellman Key Exchange

by Gilles Peskine

Hello, The interface of the Diffie-Hellman (DHM) module is modeled on the way it's used in TLS, which is a bit different from the classical presentation. You can find code examples in programs/pkey/dh_client.c and programs/pkey/dh_server.c . Elliptic-curve Diffie-Hellman (provided by the ECDH module) has similar security properties and is significantly faster. If you don't need interoperability with legacy software that only supports classical (finite-field) Diffie-Hellman, you should use ECDH rather than DHM. With the ECDH module, you can use either the same TLS-inspired interface as the DHM module, or a more classical interface for which there is a usage example in psa_crypto.c in the function psa_key_agreement_ecdh. Hope this helps, -- Gilles Peskine Mbed TLS developer You can find an example of the TLS-like inter On 12/08/2020 14:02, youssouf sokhona via mbed-tls wrote: > > Hello, I hope you are going well during this Covid crisis. > > > > I'm sending you this message to find out how to generate a Diffie > Hellman key using MbedTLS. Indeed, with all the documentation, I'm a > bit lost. > > > > I think, you have to use the int mbedtls_dhm_set_group function to > create p and g. And then, I don't know how to use which function... > Moreover, I can't find any function that allows to set a and b, > whereas they are 2 fundamental elements > > Can you help me? Thank you! > > > > Best regards, YS > > >

6 years

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Minimum Python version

by Gilles Peskine

Hello, Short version: to use the official tools to configure Mbed TLS, or to run the unit tests, you need Python. If we start requiring Python 3.5, is this going to be a problem? Detailed version: Mbed TLS includes four Python scripts that are of interest to users, with a fifth one in preparation: * scripts/config.py : compile-time configuration (unless you prefer to edit config.h directly). * scripts/generate_psa_constants.py : to build programs/psa/psa_constant_names (we have a pending task to commit the result instead of requiring it during the build). * tests/scripts/generate_test_code.py : necessary to build the unit tests. * tests/scripts/mbedtls_test.py : does anyone use this? It's for testing on platforms with Greentea, but some of the automation is missing. * upcoming: a script to generate glue code for accelerator and secure element drivers. We'll also provide a manual way, but it won't be as convenient. This is a question to everyone who's building Mbed TLS and using some of these scripts: is it ok if they require Python 3.5? Currently: * scripts/config.py requires Python 3.5. * scripts/generate_psa_constants.py requires Python 3.3. * tests/scripts/generate_test_code.py still works with Python 2.7. * tests/scripts/mbedtls_test.py still works with Python 2.7. * the driver glue code generation script will require Python 3.5, or Python 3.4 + typing. Is there any demand for versions of Python before 3.5? -- Gilles Peskine Mbed TLS developer

6 years

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Diffie Hellman Key Exchange

by youssouf sokhona

Hello, I hope you are going well during this Covid crisis. I'm sending you this message to find out how to generate a Diffie Hellman key using MbedTLS. Indeed, with all the documentation, I'm a bit lost. I think, you have to use the int mbedtls_dhm_set_group function to create p and g. And then, I don't know how to use which function... Moreover, I can't find any function that allows to set a and b, whereas they are 2 fundamental elements Can you help me? Thank you! Best regards, YS

6 years

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Re: [mbed-tls] Availability of 2.16.7 in download archive

by Janos Follath

Hi Frank, We have now updated the links both on the download-archive and releases site and now they point to https://github.com/ARMmbed/mbedtls/releases, where all the releases are available. We also have added checksums to the release notes on github and fixed the archive structure. Thank you very much for pointing these issues out! Cheers, Janos (Mbed TLS developer) On 04/08/2020, 19:06, "mbed-tls on behalf of Frank Bergmann via mbed-tls" <mbed-tls-bounces(a)lists.trustedfirmware.org on behalf of mbed-tls(a)lists.trustedfirmware.org> wrote: Hi, 2.16.7 was released on github more than one month ago (2020-07-01). But it is not listed on - download archive at https://tls.mbed.org/download-archive - release news at https://tls.mbed.org/tech-updates/releases Questions about that: - Is it an "official" release even if it is not mentioned on release news? - When will it be available in download archive? - If there will be no more addings to download archive because now we'll have to use github: * Will there be separate releases GPL/Apache available? * Will a signed/unsigned check sum be provided? * Will the "new structure" as provided by tarball on github be kept in future or was it just an accident? (e.g. main dir is named "mbedtls-mbedtls-2.16.7") I started using mbed TLS with 2.16.6 but now I am confused. ;-) cheers, Frank -- mbed-tls mailing list mbed-tls(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/mbed-tls

6 years

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Re: [mbed-tls] Availability of 2.16.7 in download archive

by Gilles Peskine

Hi Frank, I confirm that 2.16.7 is an official release of the 2.16 long-time support branch of Mbed TLS, alongside 2.7.16 for the 2.7 branch and 2.23.0 for the latest features. Everyone should update to one of these versions since they fix security issues and other bugs. We're progressively transitioning the project from Arm infrastructure to TrustedFirmware infrastructure. Eventually we'll decommission the existing tls.mbed.org, and we intend to distribute releases via trustedfirmware.org. We no longer intend to reference new releases directly on https://tls.mbed.org/download-archive . For the time being, we're distributing via GitHub. However, it isn't right that https://tls.mbed.org/download-archive links to https://github.com/ARMmbed/mbedtls/releases/ which doesn't list LTS branches. We need to link from https://tls.mbed.org/download-archive to the place that has the latest LTS releases one way or the other. There are no longer separate archives with Apache and GPL licenses. These archives were always identical except for license headers. Now LTS releases are distributed as a single archive in which the files are dual-licensed. The naming with mbedtls-mbedtls- must be a bug in our release script. Thanks for noticing. I don't think we made a conscious decision not to provide official checksums. I can see the value of having them so let's try to incorporate those in our new release process. -- Gilles Peskine Mbed TLS developer On 04/08/2020 19:05, Frank Bergmann via mbed-tls wrote: > Hi, > > 2.16.7 was released on github more than one month ago (2020-07-01). > But it is not listed on > - download archive at https://tls.mbed.org/download-archive > - release news at https://tls.mbed.org/tech-updates/releases > > Questions about that: > - Is it an "official" release even if it is not mentioned on release news? > - When will it be available in download archive? > - If there will be no more addings to download archive because now we'll > have to use github: > * Will there be separate releases GPL/Apache available? > * Will a signed/unsigned check sum be provided? > * Will the "new structure" as provided by tarball on github be kept > in future or was it just an accident? (e.g. main dir is named > "mbedtls-mbedtls-2.16.7") > > I started using mbed TLS with 2.16.6 but now I am confused. ;-) > > cheers, > Frank > >

6 years

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Availability of 2.16.7 in download archive

by Frank Bergmann

Hi, 2.16.7 was released on github more than one month ago (2020-07-01). But it is not listed on - download archive at https://tls.mbed.org/download-archive - release news at https://tls.mbed.org/tech-updates/releases Questions about that: - Is it an "official" release even if it is not mentioned on release news? - When will it be available in download archive? - If there will be no more addings to download archive because now we'll have to use github: * Will there be separate releases GPL/Apache available? * Will a signed/unsigned check sum be provided? * Will the "new structure" as provided by tarball on github be kept in future or was it just an accident? (e.g. main dir is named "mbedtls-mbedtls-2.16.7") I started using mbed TLS with 2.16.6 but now I am confused. ;-) cheers, Frank

6 years

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Re: [mbed-tls] Entropy & TRNG on the BGM13P32

by Steven Cooreman

Hi Youssouf, This is Steven with Silicon Labs. It sounds like you have questions that are very device-specific, and relate to Silicon Labs products. We do provide TRNG drivers for mbed TLS through Simplicity Studio and our software SDK. Please contact our support staff at www.silabs.com/support<http://www.silabs.com/support>, and they’ll do their best to help you out with your questions. Regards, -- Steven From: mbed-tls <mbed-tls-bounces(a)lists.trustedfirmware.org> on behalf of youssouf sokhona via mbed-tls <mbed-tls(a)lists.trustedfirmware.org> Reply to: youssouf sokhona <youssouf.sokhona(a)hotmail.fr> Date: Tuesday, 4 August 2020 at 12:59 To: "mbed-tls(a)lists.trustedfirmware.org" <mbed-tls(a)lists.trustedfirmware.org> Subject: [mbed-tls] Entropy & TRNG on the BGM13P32 CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. Hi, everyone, First of all, I hope you are all healthy during this difficult time. I am working with Simplicity Studio IDE with MbedTLS and I am currently working on a project with a BGM13P32. I plan to perform a key exchange via bluetooth with the Diffie Hellman protocol. To start my project, I need an entropy source. I read the following on the BGM13P32 documentation "The TRNG is a non-deterministic random number generator based on a full hardware solution. The TRNG is validated with NIST800-22and AIS-31 test suites as well as being suitable for FIPS 140-2 certification (for the purposes of cryptographic key generation)." And I also read about the Random Number Generator "The Frame Controller (FRC) implements a random number generator that uses entropy gathered from noise in the RF receive chain.The data is suitable for use in cryptographic applications.Output from the random number generator can be used either directly or as a seed or entropy source for software-based random num-ber generator algorithms such as Fortuna" Knowing this, how can we use this to create entropy and then create a sequence of random numbers? I need to implement the MbedTLS_hardware_poll() function? Do I have to add another entropy, like real timing for example As you can see I am a bit confused actually. Can you help me out? Thanks in advance, and take care of yourself !

6 years

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