Debug imx8m mini

[inigovicentewal]

Hi,

1.-

I am trying to debug the secure world of OP-TEE, with what mechanisms can I debug it? How can I get to the secure hardware keys?

2.-

OP-TEE uses the platform's HUK to derive keys such as SSK (secure storage key), can you find out what the board's HUK is or verify what key it uses?

Thanks

[gusarambula]

Hello Iñigo Vicente,

I’m sorry if it’s too late but starting in L4.14.98_2.0.0_GA release OP-TEE includes a Hardware Unique Key (HUK) which is generated by a derivation of the OTPMK (Master Key Verification Blob) and used by OP-TEE to manage its secure storage. You can find more information on this process on the following code:

https://source.codeaurora.org/external/imx/imx-optee-os/commit/core?h=imx_4.14.98_2.0.0_ga&id=a7cb2e...

I hope this helps!

Regards,