Commit 94296999 authored by Herbert Xu's avatar Herbert Xu
Browse files

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: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 97eedce1

crypto/shash.c

+9 −0
Original line number Diff line number Diff line
@@ -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");

include/crypto/internal/hash.h

+14 −0
Original line number Diff line number Diff line
@@ -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 */