Re: [RFC][PATCH 3/6] verification: Introduce verify_umd_signature() and verify_umd_message_sig()

[Jarkko Sakkinen]

On Wed, 2023-04-26 at 13:42 +0200, Roberto Sassu wrote:
> On Wed, 2023-04-26 at 03:28 +0300, Jarkko Sakkinen wrote:
> > On Tue Apr 25, 2023 at 8:35 PM EEST, Roberto Sassu wrote:
> > > From: Roberto Sassu <roberto.sassu@xxxxxxxxxx>
> > > 
> > > Introduce verify_umd_signature() and verify_umd_message_sig(), to verify
> > > UMD-parsed signatures from detached data. It aims to be used by kernel
> > > subsystems wishing to verify the authenticity of system data, with
> > > system-defined keyrings as trust anchor.
> > 
> > UMD is not generic knowledge. It is a term coined up in this patch set
> > so please open code it to each patch.
> 
> Yes, Linus also commented on this:
> 
> https://lwn.net/ml/linux-kernel/CAHk-=wihqhksXHkcjuTrYmC-vajeRcNh3s6eeoJNxS7wp77dFQ@xxxxxxxxxxxxxx/
> 
> I will check if the full name is mentioned at least once. So far, it
> seems that using umd for function names should be ok.

Also: "UMD-based parser for the asymmetric key type"

It is a tautology:

UMD is based on parser which based on UMD.

I.e. makes no sense.

Everyone hates three letter acronyms so I would consider not
inventing a new one out of the void.

So the corrective step would be to rename Kconfig flags as
USER_ASYMMETRIC_KEY_PARSER and USER_ASYMMETRIC_SIGNATURE_PARSER.

BR, Jarkko