From: Jarkko Sakkinen <jarkko@kernel.org>
To: Eric Biggers <ebiggers@kernel.org>
Cc: David Howells <dhowells@redhat.com>,
Lukas Wunner <lukas@wunner.de>,
Ignat Korchagin <ignat@cloudflare.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
Luis Chamberlain <mcgrof@kernel.org>,
Petr Pavlu <petr.pavlu@suse.com>,
Daniel Gomez <da.gomez@kernel.org>,
Sami Tolvanen <samitolvanen@google.com>,
"Jason A . Donenfeld" <Jason@zx2c4.com>,
Ard Biesheuvel <ardb@kernel.org>,
Stephan Mueller <smueller@chronox.de>,
linux-crypto@vger.kernel.org, keyrings@vger.kernel.org,
linux-modules@vger.kernel.org, linux-kernel@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH v12 06/10] crypto: Add supplementary info param to asymmetric key signature verification
Date: Sun, 25 Jan 2026 16:19:49 +0200 [thread overview]
Message-ID: <aXYmhZdVtvilYMHg@kernel.org> (raw)
In-Reply-To: <20260120220321.GA6191@quark>
On Tue, Jan 20, 2026 at 02:03:21PM -0800, Eric Biggers wrote:
> On Thu, Jan 15, 2026 at 09:50:48PM +0000, David Howells wrote:
> > Add a supplementary information parameter to the asymmetric key signature
> > verification API, in particular crypto_sig_verify() and sig_alg::verify.
> > This takes the form of a printable string containing of key=val elements.
>
> As I'm sure you're aware, C has native support for function parameters.
> No need to serialize to a string on the caller side and then deserialize
> in the callee.
>
> This is yet another example of a case where trying to fit different
> algorithms into a generic API doesn't work well.
>
> We should just have a library API for each signature algorithm, with
> each algorithm taking the parameters it needs.
This would be a great idea IMHO. I'm looking into renewing my TPM2
asymmetric keys patch set some day, and e.g., for that such primitives
would be more ergonomic fit.
>
> - Eric
BR, Jarkko
next prev parent reply other threads:[~2026-01-25 14:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-15 21:50 [PATCH v12 00/10] x509, pkcs7, crypto: Add ML-DSA and RSASSA-PSS signing David Howells
2026-01-15 21:50 ` [PATCH v12 01/10] crypto: Add ML-DSA crypto_sig support David Howells
2026-01-15 21:50 ` [PATCH v12 02/10] pkcs7: Allow the signing algo to calculate the digest itself David Howells
2026-01-20 14:06 ` Ignat Korchagin
2026-01-20 16:10 ` David Howells
2026-01-15 21:50 ` [PATCH v12 03/10] pkcs7: Allow direct signing of data with ML-DSA David Howells
2026-01-15 21:50 ` [PATCH v12 04/10] pkcs7, x509: Add ML-DSA support David Howells
2026-01-15 21:50 ` [PATCH v12 05/10] modsign: Enable ML-DSA module signing David Howells
2026-01-15 21:50 ` [PATCH v12 06/10] crypto: Add supplementary info param to asymmetric key signature verification David Howells
2026-01-20 22:03 ` Eric Biggers
2026-01-20 23:39 ` David Howells
2026-01-21 0:06 ` Eric Biggers
2026-01-25 14:19 ` Jarkko Sakkinen [this message]
2026-01-15 21:50 ` [PATCH v12 07/10] crypto: Add RSASSA-PSS support David Howells
2026-01-20 14:26 ` Ignat Korchagin
2026-01-15 21:50 ` [PATCH v12 08/10] pkcs7, x509: " David Howells
2026-01-20 14:39 ` Ignat Korchagin
2026-01-20 15:28 ` David Howells
2026-01-15 21:50 ` [PATCH v12 09/10] modsign: Enable RSASSA-PSS module signing David Howells
2026-01-15 21:50 ` [PATCH v12 10/10] x509, pkcs7: Limit crypto combinations that may be used for " David Howells
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