TF-M March 2024

tf-m@lists.trustedfirmware.org

11 participants
13 discussions

Image verification by 'untrusted client'

by Tomasz Jastrzębski

Is TFM-M currently able to verify the signature of the image downloaded by the 'untrusted client'? I mean, are there needed methods exposed to 'untrusted app'? If so, what methods need to be used? Kind regards, Tomasz

1 month, 3 weeks

tf-m main branch (latest commit) compiler error ,when build regression_test for corstone300/an547

by jidong.mei＠armchina.com

Hi I encounter a compile error , with latest main branch tf-m code. Code version : "commit 66c8eada12737f5cf6818ea84739f30ca275437d (HEAD -> main, origin/main, origin/HEAD) Author: Raef Coles <raef.coles(a)arm.com>" Build targert : corstone300/an547 regression_test Build command : cmake -S spe -B build_spe -DTFM_PLATFORM=arm/mps3/corstone300/an547 -DCONFIG_TFM_SOURCE_PATH=<tf-m_path> -DTFM_TOOLCHAIN_FILE=<tf-m_path>/toolchain_GNUARM.cmake -DTEST_S=ON -DTEST_NS=ON -DCMAKE_BUILD_TYPE=Debug & cmake --build build_spe -- install (these command fellow the build_test documentation : https://tf-m-user-guide.trustedfirmware.org/building/tests_build_instructio…) Compile error : "trusted-firmware-m/platform/ext/target/arm/mps3/corstone300/an547/cmsis_drivers/Driver_Flash.c:23:10: fatal error: tfm_hal_device_header.h: No such file or directory #include "tfm_hal_device_header.h" " Could you help to fix this issue. B,R Jidong

2 months

ITS encryption

by Quach, Brian

Hi, It appears that ITS encryption would be required for PSA Certified Level 3. I'm seeing that this would required a platform specific HAL implementation. Is there some reason PSA Crypto APIs were not used like they were for attestation? Encryption in ITS ================= The ITS can optionally be configured to encrypt the internal trusted storage data. To support encryption in ITS the target platform must provide an implementation of the APIs defined in ``platform/include/tfm_hal_its_encryption.h``:: enum tfm_hal_status_t tfm_hal_its_aead_generate_nonce(uint8_t *nonce, const size_t nonce_size); enum tfm_hal_status_t tfm_hal_its_aead_encrypt( struct tfm_hal_its_auth_crypt_ctx *ctx, const uint8_t *plaintext, const size_t plaintext_size, uint8_t *ciphertext, const size_t ciphertext_size, uint8_t *tag, const size_t tag_size); enum tfm_hal_status_t tfm_hal_its_aead_decrypt( struct tfm_hal_its_auth_crypt_ctx *ctx, const uint8_t *ciphertext, const size_t ciphertext_size, uint8_t *tag, const size_t tag_size, uint8_t *plaintext, const size_t plaintext_size); Regards, Brian Quach SimpleLink MCU Texas Instruments Inc. 12500 TI Blvd, MS F-4000 Dallas, TX 75243 214-479-4076

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TF-M March 2024