How do we determine the location of Signatures in a signed HAB image

[bryan_odonoghue]

Hello,

Referring to page 32 of this document : https://community.nxp.com/docs/DOC-105916 how do we determine the location of the certs and signatures in a CST signed file ?

We would like to validate the signature in our u-boot binary against SRK fuses before locking the part (an imx7s) into secure mode.

We can find the CSF based on the ivt->cst pointer but the offset and format of the signature is not obvious to us.

Could NXP provide a reference to some more detail on this ?

[bryan_odonoghue]

Hi YuriMuhin_ng‌

Thanks for your reply. Could you tell me how I raise a Service Request ? I'm afraid I'm not familiar with how that is done.

[Yuri]

Hello,

Use the following (tickets).

  Support|NXP 

Regards,

Yuri.

[Yuri]

Hello,

Sorry, but the information you are requesting is treated as confidential info; we cannot discuss this with you in public anyway, this requires to be handled as a Service Request (SR).

Regards,

Yuri.