How to permanently disable j-tag without enabling readout protection level 2?
Need to protect data access through j-tag, but need to program flash through inbuilt boot loader
Forum Posts
Not able to read AES256 encrypted data from microcontroller using UART. I am used the STM32L442KC microcontroller. I am new for AES Encryption / Descryption.
I am using atolic truestudio 9.3 . myplaintext is a[1]={97}; uint8_t ciphertext [32]; my code is below, uint32_t retval=HAL_CRYP_AESECB_Encrypt(&hcryp, plaintext, 8, ciphertext, 5); if(retval==0) { HAL_UART_Transmit(&huart1,(uint8_t *)...
Getting AES_ERR_BAD_OPERATION on SE_Decrypt_Append
Hi,I'm in the process of implementing a HTTP server in SBSFU where I can upload an update file from a webpage. I've based my work on the code in sfu_loader.c, specifically the function SFU_COM_YMODEM_DataPktRxCpltCallback() and I try to follow the sa...
How to get STM32H secure firmware to work with external crypto chip
Need help on the secure programming support for STM32H753V MCU, OTA using hardware secure chip ATECC608A. Any example code or procedure would be a great help. Thank you.
Does X-CUBE-SBSFU support the external flash on the SPI ?
Does X-CUBE-SBSFU support the external flash on the SPI for the secure boot and secure firmware updates ? If yes could you please provide more details if there is any reference boards which has this support. Thanks in Advance,Best Regards,Gowda
Problem with ECC signature verification on STM32L071xx using STM32 crypto library
I have a problem with ECC signature verifiacation using STM32 crypto library example projects.I'm using ECC based on P-256.What I do:Start a firmware crypto example project - ECC/KeyGen_Sign_Verif - generate public and private keys, sign simple messa...
Has anyone managed to get the STM32 hardware CRC on STM32F7XX to match the output of srec_cat.exe when using the -STM32_Little_Endian flag?
srec_cat.exe has a flag -STM32_Little_Endian described in the srec_cat manual as "These filters many be use to generate the CRC used by the hardware CRC unit on the STM32 series of ARM MPUs.". I can successfully append a CRC to my firmware file using...
STM32H7 Flash-embedded CRC HW calculation
We are using a STM32H7 microcontroller for our project ans would like to use the HW CRC embedded in the Flash module.We are designing a custom bootloader that will calculate the CRC and then write it in a reserved section of the flash. Since the devi...
CRC32 questions
Hi,I have a general question regarding CRC32 for data read from flash. For example I am reading 2048 bytes of data total 512 bytes chunk each time. My question isdoes it make any difference if I check CRC32 for every 512 bytes read or after read of 2...
readout protection cracked on STM32
Posted on January 08, 2018 at 10:21 Am I correct that readout protection has a major issue and is not working at all? Are all STM32s affected? Any comments on this from ST? See here: https://www.aisec.fraunhofer.de/en/FirmwareProtection.html ...