en Copyright 2015 Java http://172.16.0.5:8080/history/linux-6.15/include/crypto/internal/sig.h#65c4c93c crypto: sig - Introduce sig_alg backendCommit 6cb8815f41a9 ("crypto: sig - Add interface for sign/verify")began a transition of asymmetric sign/verify operations fromcrypto_akcipher to a new crypto_sig frontend.Internally, the crypto_sig frontend still uses akcipher_alg as backend,however: "The link between sig and akcipher is meant to be temporary. The plan is to create a new low-level API for sig and then migrate the signature code over to that from akcipher." https://lore.kernel.org/r/ZrG6w9wsb-iiLZIF@gondor.apana.org.au/ "having a separate alg for sig is definitely where we want to be since there is very little that the two types actually share." https://lore.kernel.org/r/ZrHlpz4qnre0zWJO@gondor.apana.org.au/Take the next step of that migration and augment the crypto_sig frontendwith a sig_alg backend to which all algorithms can be moved.During the migration, there will briefly be signature algorithms thatare still based on crypto_akcipher, whilst others are already based oncrypto_sig. Allow for that by building a fork into crypto_sig_*() APIcalls (i.e. crypto_sig_maxsize() and friends) such that one of the twobackends is selected based on the transform's cra_type.Signed-off-by: Lukas Wunner <lukas@wunner.de>Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> List of files: /linux-6.15/include/crypto/internal/sig.h Tue, 10 Sep 2024 14:30:12 +0000 Lukas Wunner <lukas@wunner.de> http://172.16.0.5:8080/history/linux-6.15/include/crypto/internal/sig.h#6cb8815f crypto: sig - Add interface for sign/verifySplit out the sign/verify functionality from the existing akcipherinterface. Most algorithms in akcipher either support encryptionand decryption, or signing and verify. Only one supports both.As a signature algorithm may not support encryption at all, thesetwo should be spearated.For now sig is simply a wrapper around akcipher as all algorithmsremain unchanged. This is a first step and allows users to startallocating sig instead of akcipher.Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> List of files: /linux-6.15/include/crypto/internal/sig.h Thu, 15 Jun 2023 10:28:48 +0000 Herbert Xu <herbert@gondor.apana.org.au>