Detached signature validation not working.

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
c
Domain
operating-systems, security

Research direction

Start by tracing the custom GRUB initrd verification path that calls verify_buffer with the PKCS function, then compare it with how VENDOR_CERT_FILE and the shim protocol handle detached signatures. Reproduce the 0x8000000000000002 error and determine whether detached-signature validation completes successfully without breaking shim loading.

Written by the indexing model from the issue text.

Description

I am using VENDOR_CERT_FILE,This shim could load grub, bzimage, but we have custom code in grub where we will verify initrd using detached signature using verify_buffer pkcs function. getting error: Unexpected error 0x8000000000000002. I am doubting shim overwrite start and load functions, and shim protocol does not take detached signature. is there a way to solve this issue.

Dominant language
C
Stars
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Forks
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