STM32 MCUs Security

How many Public Keys we can store in Secure Boot. As per understanding from SBSFU examples, we can store only one public key to verify the signature of firmware. Can't we store more than one KEY ??

We want to store up to 4 Public Keys as backup, in case of any exploit in one KEY, we can switch to another.So, Can you provide any solution to store more than one Public KEY in SBSFU solution??

Run issue after setting RDP to level 1 (POR and reset)

Hi,For production purpose we designed a control board for the test jig which does unitary and RF testing as well as the programming of onboard SoC and MCU, the STM32 target in this case is an STM32F411CEU6, the test jig control board is also based on...

Hi, After multiple tries of connecting STM32G031 MCU on target board with ST-link v2 using STMCubeProgrammer IDE, at one instant found an error window as pasted below. If in case TrustZone is enabled on this, is there a way out to erase the MCU?

How to place some functions from precompiled library (eg. Crypto supplied by ST) into TCMs?

I would like to place some of the functions of ST Crypto library (cmox_crypto) into the ITCM to increase the performance on STM32H750x MCU. I would also like to place some of the associated data (tables) into ITCM or DTCM. However, the functions are ...

Hello, I have followed the MOOC about SBSFU : MOOC Security Part6 - STM32 security ecosystem - 02 Building the SBSFU. Is it possible to get the scripts .bat use in the mooc ? (i join the image below) Thanks a lot best regards Mikael

is Firmware encryption support on STM32H753VI ??

As per Firmware encryption need, we need to have OTFDEC module and External Flash, where we can store Encrypted firmware on External Flash and on every reset of MCU, we decrypt on the fly with help of OTFDEC module and load it on RAM. From there it c...

Need support to have STM32F769 Hardware 32BIT CRC generation and same value should be generated by STM CUBE IDE POST COMPILATION 32BIT CRC for BINARY file .

Need support to have STM32F769 Hardware 32BIT CRC generation and same value should be generated by STM CUBE IDE POST COMPILATION 32BIT CRC for BINARY file .So a quick background is once the project is compiled and binary is generated we use SREC_CAT ...

Accessing "Backup SRAM" with RDB Level 1 from Code in RAM

Hi all,I am not sure if I understood the reference manual right: When I activate Read Out Protection RDP Level 1, I can no longer access RTC Backup registers if I execute in RAM. I did not read that also Backup RAM is inaccessible. But it looks it i...