Question
Clarification on OBKey Storage, ITS (Internal Trusted Storage), and PS (Protected Storage) Access from Non-Secure Application
Hello Team,
We need clarification regarding OBKey Storage, Internal Trusted Storage (ITS), and Protected Storage (PS) in the STM32H5F5 device when using the Secure Manager framework.
- Is the OBKey, ITS and PS storage physically located within the device's 4 MB internal Flash memory, or does it reside in a dedicated secure memory region?
- Can a Non-Secure (NS) application directly read from or write to ITS, OB KEYS, PS storage areas in terms secure manager?
- If direct access is not allowed, what are the security mechanisms that prevent NS access?
Regards,
RJ
