Re: [PATCH v9 0/4] Check codeSigning extended key usage extension

[Jarkko Sakkinen]

On Thu, Aug 25, 2022 at 10:23:10PM +0800, Lee, Chun-Yi wrote:
> NIAP PP_OS certification requests that OS need to validate the
> CodeSigning extended key usage extension field for integrity
> verifiction of exectable code:
> 
>     https://www.niap-ccevs.org/MMO/PP/-442-/
>         FIA_X509_EXT.1.1
> 
> This patchset adds the logic for parsing the codeSigning EKU extension
> field in X.509. And checking the CodeSigning EKU when verifying
> signature of kernel module or kexec PE binary in PKCS#7.

Might be cutting hairs here but you don't really explain
why we want to support it. It's not a counter argument
to add the feature. It's a counter argument against adding
undocumented features.

BR, Jarkko