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[CRYPTO] api: Add aead crypto type

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This patch adds crypto_aead which is the interface for AEAD
(Authenticated Encryption with Associated Data) algorithms.

AEAD algorithms perform authentication and encryption in one
step.  Traditionally users (such as IPsec) would use two
different crypto algorithms to perform these.  With AEAD
this comes down to one algorithm and one operation.

Of course if traditional algorithms were used we'd still
be doing two operations underneath.  However, real AEAD
algorithms may allow the underlying operations to be
optimised as well.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2007-08-30 15:36:14 +08:00 • committed by David S. Miller
parent e2ee95b8c6
commit 1ae978208e
5 changed files with 312 additions and 0 deletions
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6
include/crypto/algapi.h
View file

@ -94,6 +94,7 @@ struct blkcipher_walk {
};
extern const struct crypto_type crypto_ablkcipher_type;
extern const struct crypto_type crypto_aead_type;
extern const struct crypto_type crypto_blkcipher_type;
extern const struct crypto_type crypto_hash_type;
@ -165,6 +166,11 @@ static inline void *crypto_ablkcipher_ctx_aligned(struct crypto_ablkcipher *tfm)
return crypto_tfm_ctx_aligned(&tfm->base);
}
static inline struct aead_alg *crypto_aead_alg(struct crypto_aead *tfm)
{
return &crypto_aead_tfm(tfm)->__crt_alg->cra_aead;
}
static inline struct crypto_blkcipher *crypto_spawn_blkcipher(
struct crypto_spawn *spawn)
{