Security Mechanisms in STM32H753ZI for Preventing Unauthorized Access and Modification

Denish_Patel · ‎2024-11-20

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?

STea · ‎2024-11-21

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:

Regards

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Pavel A. · ‎2024-11-20

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 · ‎2024-11-21

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:

Regards

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.