STM32 MCUs Security

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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
  • 4407 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
  • 1413 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...

Provisioning Failed

Hello,I am working on Secure Boot for one of the project having the following list of information,Board : B-U585I-IOT02ADevice name : STM32U575/STM32U585Device type : MCUDevice CPU : Cortex-M33 I am trying to boot the device using generated keys with...

jjshant by Associate
  • 458 Views
  • 0 replies
  • 0 kudos

Hardfault in RDP Level Change

Hello, I am writing code for changing the RDP Level, but I am facing a hard fault trigger in the code:this is the line after unlocking the FLASH_CR_LOCK, and FLASH_CR_OPTLOCK. After unlocking able to change the RDP level to 1 or 2 but as soon the deb...

Resolved! SBSFU SFB update package size question

Hello,I am developing an application on STM32H7 MCU which uses SBSFU bootloader for secure firmware updates. I am trying to combine the SFB update package with some additional data in a single binary file that is sent for the firmware. To make this w...

sute by Associate III
  • 409 Views
  • 1 replies
  • 0 kudos