Security Mechanisms in STM32H753ZI for Preventing Unauthorized Access and Modification

[Denish_Patel]

Does the STM32H753ZI microcontroller provide a built-in unique key or mechanism to ensure that the chip cannot be unlocked, and firmware cannot be flashed, read, or erased without the correct key, effectively preventing unauthorized access or modification?

[Pavel A.]

No, STM32H753 does not has such key (at least not publicly documented). It has only so called "read-out protection " (RDP) level 2. For more info see https://www.st.com/resource/en/application_note/dm00493651-introduction-to-stm32-microcontrollers-security-stmicroelectronics.pdf

 

[STea]

Hello @Denish_Patel ,

To ensure firmware integrity and authenticity we have a solution called SBSFU (secure boot secure firmware update) which uses booth software and hardware mechanism to insure you request as well as providing secure path to update the Firmware by the authenticated user using cryptographic booth symmetric and asymmetric algorithms you can have more details on this solution in the following documents:

• st.com/resource/en/application_note/an5056-integration-guide-for-the-xcubesbsfu-stm32cube-expansion-package-stmicroelectronics.pdf
• Category:Secure boot and Secure firmware update - stm32mcu
• STM32 security ecosystem - STMicroelectronics

Regards