modsign: Enable RSASSA-PSS module signing
Add support for RSASSA-PSS signatures (RFC8017) for use with module signing
and other public key cryptography done by the kernel.
Note that only signature verification is supported by the kernel.
Note further that this alters some of the same code as the MLDSA support,
so that needs to be applied first to avoid conflicts.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Lukas Wunner <lukas@wunner.de>
cc: Ignat Korchagin <ignat@cloudflare.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: keyrings@vger.kernel.org
cc: linux-crypto@vger.kernel.org
3 files changed
