STM32 MCUs Security

Does HAL_FLASH_OB_Launch cause a system reset on STM32H563 MCU?

As for STM32H563 MCU, will it result in a system reset after executing the function HAL_FLASH_OB_Launch? From my experiment, before executing HAL_FLASH_OB_Launch, I can read data from MCU via I2C while all returned data become 0xFF(i.e. invalid data)...

AES key storage in STM32WL33CCV6 and STM32WBA50KG

Hello,I will use the STM32WL33CCV6 as a wM-Bus gateway and the STM32WBA50KG for BLE 5.4 communications.We will encrypt these links with AES key.1) For STM32WL33CCV6 and wM-Bus, AES-128-CBC and eventually CMAC authentification will be used. It will be...

Resolved! SBSFU Rollback with stm32L476RG

Hi All,I am following the UM2262 document. I will add a screenshot. I enabled the ENABLE_IMAGE_STATE_HANDLING flag to enable rollback, but after updating UserApp.bin, the device continues to reset. I will add a debug log screenshot (it’s not jumping ...

SBSFU OTA 2 Images STM32WB55 linker file for application with OTA

Using STM32WB55, for the SBSFU 2 image bootloader ST provide a linker script for the user application. This works, but the user application itself can only be updated by uploading a new application from within the application using YMODEM, or exiting...

Is it coming official update of SBSFU to support CubeMX?

Hello everyone,Now I'm developing an user application compatible with SBSFU on STM32CubeIDE.SBSFU itself is pretty nice, but I feel the development architecture and environment are a little bit old, like not supporting CubeMX.Fortunatelly, I succeede...

Resolved! Are x-cube-cryptolib V.4 cmox_ functions reentrant?

Hi, I planned of implementing this library in a new STM32G4 application. I have no RTOS, and I need to make cryptographic functions calls from both main loop and interrupts. So, instead of wasting time in building a thread-safe scheduling mechanism ...

Resolved! STM32HSM-V2 Secure Firmware Install Hardware Secure Module usage/re-usage

Hi,I'm trying to get a bit of an understanding of how the HSM is used in real world environments. The documentation I've found so far suggests that once the maximum number of installs for a card has been reached, the card is essentially dead and a n...

SBSFU OTA 2 Images STM32WB55 Reboot loop with no BLE advertising

Hi, I have successfully managed to test the 1 image example of SBSFU on the STM32WB55. I wanted to try the 2 image example, but have found that the SBSFU application seems to get stuck in a boot loop, and does not advertise BLE. I have tried tying PA...