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F29H85X-SOM-EVM: SSU SECCRC value

Part Number: F29H85X-SOM-EVM

Hi,

It is stated as LINK2 has privileges to change the protection policy during runtime, unless LINK2 is locked and committed. During software development, LINK2 must be treated as secure code with appropriate analysis and testing of LINK2 code to harden the code against attacks.

If we change the SSU values at runtime, how will the SECCRC value gets affected?

Also, What are HSM assets stored in TRIM region of HSM Flash’s NONMAIN sector?

Thanks 

Geetha K

  • Hi Geetha,

    If we change the SSU values at runtime, how will the SECCRC value gets affected?

    CRC Calculation and Checks won't be afftected by any runtime changes.
    After a Power On Reset (POR), the SEC CFG values are populated in the SSU registers.

    Also, What are HSM assets stored in TRIM region of HSM Flash’s NONMAIN sector?

    The TI KEK, MEK, MPK Hash, MEK BCH, UID etc is stored in the TRIM Region of HSM Flash.

    Thanks and Regards,
    Aditya Singal