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imx6q SNVS 256-bit Master Key

Question asked by Yiling Xu on Apr 25, 2019
Latest reply on Apr 26, 2019 by Yuri Muhin

In Imx6q Security Reference Manual Chapter 6, see following:

If the SNVS determines the chip is in a trustworthy state, it allows CAAM to use a secret 256-bit value that CAAM uses to derive cryptographic keys during blob encapsulation and decapsulation.

 

We can know CAAM use 256-bit secret value to devrie cryptographic key blob encapsulation and decapsulation.

I want to confim if only CAAM can read this 256-bit secret value from SNVS? If not, except CAAM, who can read this 256-bit secret value from SNVS?

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