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crypto: shash - Add spawn support 

This patch adds the functions needed to create and use shash
spawns, i.e., to use shash algorithms in a template.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2009-07-08 17:21:37 +08:00
parent 97eedce1a6
commit 942969992d
2 changed files with 23 additions and 0 deletions
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9
crypto/shash.c
View File

@ -509,5 +509,14 @@ void shash_free_instance(struct crypto_instance *inst)
}
EXPORT_SYMBOL_GPL(shash_free_instance);
int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
struct shash_alg *alg,
struct crypto_instance *inst)
{
return crypto_init_spawn2(&spawn->base, &alg->base, inst,
&crypto_shash_type);
}
EXPORT_SYMBOL_GPL(crypto_init_shash_spawn);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Synchronous cryptographic hash type");

14
include/crypto/internal/hash.h
View File

@ -38,6 +38,10 @@ struct shash_instance {
struct shash_alg alg;
};
struct crypto_shash_spawn {
struct crypto_spawn base;
};
extern const struct crypto_type crypto_ahash_type;
int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
@ -52,6 +56,10 @@ int crypto_unregister_shash(struct shash_alg *alg);
void shash_free_instance(struct crypto_instance *inst);
int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
struct shash_alg *alg,
struct crypto_instance *inst);
static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
{
return crypto_tfm_ctx(&tfm->base);
@ -106,5 +114,11 @@ static inline struct shash_instance *shash_alloc_instance(
sizeof(struct shash_alg) - sizeof(*alg));
}
static inline struct crypto_shash *crypto_spawn_shash(
struct crypto_shash_spawn *spawn)
{
return crypto_spawn_tfm2(&spawn->base);
}
#endif /* _CRYPTO_INTERNAL_HASH_H */