Partial Image Authentication in HAB

[norratheprattan]

I'm not sure if my previous question has been noticed since I put it in a comment. So I'll put it here instead.

Based on my understanding of HAB and HAB uImage Layout, uImage is authenticated as a whole by u-boot. and it seems to be the case for example API provided in a document.

Is there a code (and/or is it possible at all in HAB) for authenticating only a partial uImage since some parts of our image (at least at the end) should support a code update.

Thanks,

[Yuri]

Hello,

  Basically boot ROM HAB API is used just to check an area in memory,

so, if customer's uImage can be split into two parts - it is possible to sign

only one of them (based on uImage memory layout).  

Have a great day,

Yuri

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