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

Question asked by Bryan O'Donoghue on Nov 9, 2017
Latest reply on Nov 22, 2017 by Yuri Muhin

Hello,

 

Referring to page 32 of this document : ftf-ins-f1208.pdf 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 ?

 

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