STM32 MCUs Security

How to port stm32-cryptolib example application from NUCLEO-H743ZI to NUCLEO-H7A3ZI-Q.

Hi,I want to test RSA signing and verification on the STM32. I found STM32CubeExpansion_Crypto_V4.0.1 with some RSA signing and verification example for NUCLEO-H743ZI. I want to port this application for NUCLEO-H7A3ZI.How can I port the application f...

SECoreBin postbuild script incorrectly updates PATH

I'm using SBSFU v2.6.2 on a Windows 10 x64 machine with CubeIDE v1.11.0I was recently modifying the postbuild script in an SBSFU-based project and noticed it has a bug setting the PATH variable when looking for prepareimage executable:export PATH=$ba...

AES_CBC_Encrypt and AES_CBC_Decrypt don't yield the same result again.

I'm using an STM32L4A6ZG (as a nucleo board). This is the code I am using:#include "err_codes.h" #include "sk.h" #include "aes_common.h" #include "aes_cbc.h" #define AES_BLOCK 16 #define IV_LENGTH 16 #define SIZE 32__ALIGN_BEGIN static const uint8_t ...

How to remove sbsfu code

Hi support team,i am testing the sbsfu code in P-NUCLEO-WB55 but i missed out to disable security ips SECBOOT_DISABLE_SECURITY_IPS and flash into the board it set RDP level to 1 also set SFU_WRP_PROTECT_ENABLE, SFU_TAMPER_PROTECT_ENABLE,SFU_DAP_PROTE...

Hello How can I use padding PKCS7 in the AES library?

Crypto library RSA Signature errors

Hi,I am trying to use the STM32Cryptography library to verify the signature of a flash segment, using RSA Encryption and 3072 bit length keys.The signature is generated by a python script and appended to the hex file. The signature has a length of 38...

[SOLVED] STM32 CRC calculation unit - I know this is a very old question.

I could not get wanted result by using STM32F7 calculation unit. The code I borrowed for comparison was from WireShark CRC32 function. It was a table based function for speed. And I compared the STM32 CRC result with bitwise algorithm. I found out th...

On the STM32H (not L) I need to use a 1-wire EPROM, and I try the generic driver calls generated by the IDE (HAL_SWPMI_Receive, HAL_SWPMI_Transmit, HAL_SWPMI_MspInit, etc.) and I see no bits going out on the scope, and the transmit times out.

I can "Transmit" but the TXE flag never clears and the transmit times out. It's unclear which parts of the bus are fully automated (reset, discovery, etc.) and how much of the CRC is handled, etc. I can see nothing on a scope, but if the chip gets in...