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STM32 MCUs Security

Ask questions and find answers on STM32 security frameworks and tools, including cryptographic libraries, TrustZone, and the Secure Manager.

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Resolved! CRYPT module

Hi Good day,       Trying to understand the CRYPTO module for MAC generation, particularly AES CBS MAC. Which algorithm mode i have to choose?, found AES CBC not AES CBC MAC.

sarun by • Associate III
  • 835 Views
  • 1 replies
  • 2 kudos

Resolved! CMOX ECDSA KeyGen Public Key not valid

Hi,I´m trying to implement a simple ECDH test by implementing the functions from the Cryptographic Library V4.2.0.There are two persons A and B generating a pair of private and public keys. The keys are generated by the cmox_ecdsa_keyGen(...) functio...

Jonas3 by • Associate II
  • 1134 Views
  • 1 replies
  • 0 kudos

Resolved! CRC calculation gives 32 bit number instead of 8 bit

Hello. I'm trying to obtain CRC value from CRC peripheral. It's supposed to give me 8 bit number. Instead it gives me 32 bit number. What am I doing wrong? Below is the code and program outputs. /* USER CODE BEGIN Header */ /** ********************...

Adar70 by • Associate II
  • 1051 Views
  • 1 replies
  • 1 kudos

Problems with RDP regression

HiWhen I was returning from RDP level 1 to 0 the stm32cube programmer program crashed and now every time I try to access the microcontroller several different cases happen:1- Connect and instantly lose the connection giving the next error: Error: Dat...

Resolved! Firmware authenticity verification with ECDSA

Hello,I am using the X-CUBE-SBSFU package with the KMS to perform firmware update on my ST MCU.To verify the authenticity of the firmware I use ECDSA. However, I don't understand why I only need to provide a private key but not the public key. If I u...

BEnge.1 by • Associate III
  • 5800 Views
  • 4 replies
  • 1 kudos

X-CUBE-CRYPTOLIB: ECDSA invalid public key format

Hi,I'm using STM32CubeExpansion_Crypto_V4.0.1 library for verifying a signed firmware file on STM32F7 controller. The key-pair has been generated using openssl command-line. The firmware has been signed using the private key (PEM). The signature has ...

SRB by • Associate II
  • 2404 Views
  • 5 replies
  • 0 kudos

STM32H745 sbsfu merge for cm4 and cm7?

I'm successfully implemented IAP for stm32h745. so I wish upgrade to sbsfu.Sbsfu has security firmware upgrade. When i implement for IAP, Firmware file was merged cm4, cm7 binary file using Srecord.If I merge files, won't the integrity of the firmwar...

Resolved! Managing Keys Securely

Hi Team,I am working on a project involving the STM32H5 microcontroller and I am in need of information on how to manage the keys securely for encryption and decryption. I have been unable to find a document that covers this topic specifically for th...

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