I am working to generate the CRC for the flash memory, During this I am facing hard fault when the CRC module tries to read from certain flash locations, to debug it I made a small loop which assigns the value of each 4 byte. I found that reading at ...
Hi,I am doing feasibility on SBSFU bootloader on STM32H753ZI. Currently in our firmware we are planning to have a custom bootloader based on SBSFU for secure boot and update. But I came across SFI feature from ST to ensure protection at the manufactu...
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.
Hello,I've implemented secure bootloader on STM32H753ZI using SBSFU examples and it's working very well. To secure the board I use WRP + RDP Level 1 + Secure Memory Area for bootloader. I would like to have option to recover from this state and be ab...
Hello, I am trying to adapt the H753xx SBSFU implementation to the H745xx dual core board.I have so far configured a second slot by creating a second MPU region of 1KB to protect the header of the second slot, as well as changing the security checks ...
We are using STM32H750VBT6 rev V and have encounter boards with mcus that freezes when we try to use the CRYP. So far we have seen that on failing boards the crypto registers are zeroed immediately after initialization but on a functional board ther...
Hi everyone,I'm working in a Medical devices company and we use currently plenty of STM32s (F0,F1,F4, maybe soon H7). Until now, we didn't bother that much the cybersecurity topic for the firmwares but now the norms are forcing us :D.I checked a bit ...
I've tried to enable the CRYPT and HASH peripherals by setting bits 5 and 4 in the AHB2ENR register, but all peripheral registers read as zero and writes are ignored as if the clock wasn't enabled or the peripheral was missing. Does this chip have ha...
Hi All,Does the SBSFU reserve all of the DTCM in an H7 (stored state information, etc., expected to be stable across Core resets) such that the application shouldn't touch any of it after beginning execution? The "Protected RAM ..." note in AN5056 F...
I am using the SBSFU STM32CubeExpansion_SBSFU_V2.6.2 version for my custom board STM32H743VI controller. I have ported the STM32H7B3I-DK project for H743 controller for COM port and changed the crypto scheme to SECBOOT_ECCDSA_WITHOUT_ENCRYPT_SHA256. ...
