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Reminder: MBed TLS Tech Forum - US/Europe

by Don Harbin

Hi All, A gentle reminder that the US-Europe timezone-friendly MBed TLS Tech forum is next Monday at 4:30 PM UK time. Invite details can be found on the online calendar here <https://www.trustedfirmware.org/meetings/>. If you have any topics, please let Dave Rodgman know. :) Best regards, Don Harbin TrustedFirmware Community Manager don.harbin(a)linaro.org

2 years, 1 month

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Canceled event with note: MBed TLS Technical Forum @ Mon May 8, 2023 8:30am - 9:30am (MST) (mbed-tls@lists.trustedfirmware.org)

by don.harbin＠linaro.org

This event has been canceled with a note: "Cancelled due to Bank Holiday" MBed TLS Technical Forum Monday May 8, 2023 ⋅ 8:30am – 9:30am Mountain Standard Time - Phoenix Trusted Firmware is inviting you to a scheduled Zoom meeting. Topic: MBed TLS Technical Forum Time: Oct 25, 2021 04:30 PM London Every 4 weeks on Mon, 20 occurrence(s) Oct 25, 2021 04:30 PM Nov 22, 2021 04:30 PM Dec 20, 2021 04:30 PM Jan 17, 2022 04:30 PM Feb 14, 2022 04:30 PM Mar 14, 2022 04:30 PM Apr 11, 2022 04:30 PM May 9, 2022 04:30 PM Jun 6, 2022 04:30 PM Jul 4, 2022 04:30 PM Aug 1, 2022 04:30 PM Aug 29, 2022 04:30 PM Sep 26, 2022 04:30 PM Oct 24, 2022 04:30 PM Nov 21, 2022 04:30 PM Dec 19, 2022 04:30 PM Jan 16, 2023 04:30 PM Feb 13, 2023 04:30 PM Mar 13, 2023 04:30 PM Apr 10, 2023 04:30 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://linaro-org.zoom.us/meeting/tJEkceuurT4sGdaksikbUn6FARB9Kuk3ac2o/ics… Join Zoom Meeting https://linaro-org.zoom.us/j/95962635632?pwd=STFkQVltejAzRDJ6NmoxZjhmZC9RUT… Meeting ID: 959 6263 5632 Passcode: 018366 One tap mobile +13462487799,,95962635632# US (Houston) +16699009128,,95962635632# US (San Jose) Dial by your location +1 346 248 7799 US (Houston) +1 669 900 9128 US (San Jose) +1 253 215 8782 US (Tacoma) +1 312 626 6799 US (Chicago) +1 646 558 8656 US (New York) +1 301 715 8592 US (Washington DC) 877 853 5247 US Toll-free 888 788 0099 US Toll-free Meeting ID: 959 6263 5632 Find your local number: https://linaro-org.zoom.us/u/aewUpnQu5y Guests nnac123(a)gmail.com psa-crypto(a)lists.trustedfirmware.org mbed-tls(a)lists.trustedfirmware.org ~~//~~ Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this email because you are an attendee on the event. To stop receiving future updates for this event, decline this event. Forwarding this invitation could allow any recipient to send a response to the organizer, be added to the guest list, invite others regardless of their own invitation status, or modify your RSVP. Learn more https://support.google.com/calendar/answer/37135#forwarding

2 years, 1 month

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Minimum size in RSA key generation

by Gilles Peskine

Hello, To strengthen Mbed TLS against accidental misuse, we're going to enforce a minimum size for RSA key generation. Currently the minimum is 128 bits, just to avoid some edge cases in the implementation. So for example, if you want a 2048-bit key but accidentally pass a number of bytes, the library will happily generate a 256-bit key. We want to prevent this scenario. What should the minimum be? If we make the minimum 2048 bits, will this be a problem? We will not make the minimum any higher. But we're considering enforcing only a minimum 1024 bits, which is over the record from public breaks and largely resolves the risk of bits/bytes confusion. Should we also enforce a minimum (perhaps lower) in the 2.28 long-time support branch? If you're using Mbed TLS to generate small RSA keys, please let us know on the mailing list, on GitHub at https://github.com/Mbed-TLS/mbedtls/issues/7556, or by private email. Best regards, -- Gilles Peskine Mbed TLS developer

2 years, 1 month

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Invitation: MBed TLS Technical Forum @ Every 4 weeks from 9:30am to 10:30am on Monday (MST) (mbed-tls@lists.trustedfirmware.org)

by don.harbin＠linaro.org

MBed TLS Technical Forum Every 4 weeks from 9:30am to 10:30am on Monday Mountain Standard Time - Phoenix Trusted Firmware is inviting you to a scheduled Zoom meeting. Topic: MBed TLS Technical Forum Time: Oct 25, 2021 04:30 PM London Every 4 weeks on Mon, 20 occurrence(s) Oct 25, 2021 04:30 PM Nov 22, 2021 04:30 PM Dec 20, 2021 04:30 PM Jan 17, 2022 04:30 PM Feb 14, 2022 04:30 PM Mar 14, 2022 04:30 PM Apr 11, 2022 04:30 PM May 9, 2022 04:30 PM Jun 6, 2022 04:30 PM Jul 4, 2022 04:30 PM Aug 1, 2022 04:30 PM Aug 29, 2022 04:30 PM Sep 26, 2022 04:30 PM Oct 24, 2022 04:30 PM Nov 21, 2022 04:30 PM Dec 19, 2022 04:30 PM Jan 16, 2023 04:30 PM Feb 13, 2023 04:30 PM Mar 13, 2023 04:30 PM Apr 10, 2023 04:30 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://linaro-org.zoom.us/meeting/tJEkceuurT4sGdaksikbUn6FARB9Kuk3ac2o/ics… Join Zoom Meeting https://linaro-org.zoom.us/j/95962635632?pwd=STFkQVltejAzRDJ6NmoxZjhmZC9RUT… Meeting ID: 959 6263 5632 Passcode: 018366 One tap mobile +13462487799,,95962635632# US (Houston) +16699009128,,95962635632# US (San Jose) Dial by your location +1 346 248 7799 US (Houston) +1 669 900 9128 US (San Jose) +1 253 215 8782 US (Tacoma) +1 312 626 6799 US (Chicago) +1 646 558 8656 US (New York) +1 301 715 8592 US (Washington DC) 877 853 5247 US Toll-free 888 788 0099 US Toll-free Meeting ID: 959 6263 5632 Find your local number: https://linaro-org.zoom.us/u/aewUpnQu5y Guests psa-crypto(a)lists.trustedfirmware.org mbed-tls(a)lists.trustedfirmware.org nnac123(a)gmail.com View all guest info https://calendar.google.com/calendar/event?action=VIEW&eid=ZGExMnNqcDB1MDFm… Reply for mbed-tls(a)lists.trustedfirmware.org and view more details https://calendar.google.com/calendar/event?action=VIEW&eid=ZGExMnNqcDB1MDFm… Your attendance is optional. ~~//~~ Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this email because you are an attendee on the event. To stop receiving future updates for this event, decline this event. Forwarding this invitation could allow any recipient to send a response to the organizer, be added to the guest list, invite others regardless of their own invitation status, or modify your RSVP. Learn more https://support.google.com/calendar/answer/37135#forwarding

2 years, 1 month

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Troubles with server certificate verification

by François Legal

Hello, using mbed TLS pavkaged with esp32 toolchain, for doing eap-tls with server certificate verification using CA cert. Mbed TLS rejects certificate in mbedtls_x509_crt_check_key_usage (x509_crt.c), because usage_may variable is 0. usage is set by mbedtls_ssl_check_cert_usage (ssl_tls.c) to MBEDTLS_X509_KU_DIGITAL_SIGNATURE because my keys are ECDHE-ECDSA. Is this the expected behaviour ? Thanks in advance François

2 years, 1 month

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Help with unexpected generic_sum result

by joe＠polka.cat

Hello, I was working on packaging up mbedtls for [tea, a new package manager](https://tea.xyz/) and ran into an error validating the built products. I was hoping maybe someone more knowledgeable could take a quick look. I followed the homebrew formula here: https://github.com/Homebrew/homebrew-core/blob/af8e7e97432944a65c0f985132a7… Here's the PR for adding it to tea: https://github.com/teaxyz/pantry/pull/1822 For some reason I'm not getting the expected checksum from `generic_sum`. Any help would be much appreciated. Thanks! -Joe

2 years, 1 month

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Support for SHA3 and HMAC with SHA3

by Nilesh.Badodekar＠infineon.com

Hi, Is there a plan to support SHA3 (256 and 384) and subsequent usage in HMAC on mbedtls? - Regards Nilesh Badodekar

2 years, 1 month

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TLS over UART using MbedTLS Library for STM32U5

by manish.verma＠cyient.com

Hi Team, I want to implement TLS over UART using MbedTLS library, But the issue i am facing right now is There are no example codes or any reference document for briefing how to import the libraries and what changes should be done to do so. I tried to use some examples for Lwip examples but i am getting errors while importing library like platform error, timing_alt.h error. Please help me out in urgent. Thanks !!

2 years, 1 month

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Memory leak in mbedtls_ssl_handshake

by Malcolm Bugler

I have created an http server following the example for server1 under FreeRTOS and Lwip running on a STM32H753 using the Stm32CubeIDE. Everything seem to work correctly, however, I am experiencing a small memory leak over each successive TLS connection of 160 bytes. It is obvious that I must not be freeing a context, but as I am following the example very closely, except for running the code in a FreeRTOS thread, I must be missing something fundemental. Has anyone on this list experienced a similar issue or have any ideas on how to debug it?

2 years, 1 month

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Reminder: MBed TLS Tech Forum - Asia/Europe

by Don Harbin

Hi All, A gentle reminder that the Asia-Europe timezone-friendly MBed TLS Tech forum is next Monday at 10:00am PM UK time. Invite details can be found on the online calendar here <https://www.trustedfirmware.org/meetings/>. If you have any topics, please let Dave Rodgman know. :) Best regards, Don Harbin TrustedFirmware Community Manager don.harbin(a)linaro.org

2 years, 1 month

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