topic [Security] CSEC with keys in S32K

[Security] CSEC with keys

Gideon — Mon, 22 Jul 2024 07:48:07 GMT

Dear NXPs:

IC:S32K142

I need to determine whether there is a key in NVM in a scenario, and I hope to get such judgment from the register, rather than the software recording the flag itself. How can I know from the CSEc register that the key has been imported?

Re: [Security] CSEC with keys

lukaszadrapa — Wed, 24 Jul 2024 05:08:54 GMT

Hi @Gideon

CSEc does not provide information if a key is loaded or not. It's up to user to do the tracking of keys.

The only indirect way I can see: try to use a key. If a key is not loaded yet, you should get ERC_KEY_EMPTY error.

Regards,

Lukas