On Wed, Jun 22, 2022 at 12:06 AM Roberto Sassu <[email protected]> wrote:
>
> > From: Alexei Starovoitov [mailto:[email protected]]
> > Sent: Wednesday, June 22, 2022 12:32 AM
> > On Tue, Jun 21, 2022 at 06:37:57PM +0200, Roberto Sassu wrote:
> > > + if (child_pid == 0) {
> > > + snprintf(path, sizeof(path), "%s/signing_key.pem", tmp_dir);
> > > +
> > > + return execlp("./sign-file", "./sign-file", "-d", "sha256",
> > > + path, path, data_template, NULL);
> >
> > Did you miss my earlier reply requesting not to do this module_signature append
> > and use signature directly?
>
> I didn't miss. sign-file is producing the raw PKCS#7 signature here (-d).
>
> I'm doing something slightly different, to test the keyring ID part.
> I'm retrieving an existing kernel module (actually this does not work
> in the CI), parsing it to extract the raw signature, and passing it to the
> eBPF program for verification.
We don't have signed modules in CI.
When you make changes like this you have to explain that in the commit log.
> Since the kernel module is signed with a key in the built-in keyring,
> passing 1 or 0 as ID should work.
>
> Roberto
>
> (sorry, I have to keep the email signature by German law)
I don't believe that's the case since plenty of people
work from Germany and regularly contribute patches without
such banners.
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