Commit 7d6f5640 authored Jul 08, 2009 by Herbert Xu

crypto: shash - Add shash_attr_alg2 helper



This patch adds the helper shash_attr_alg2 which locates a shash
algorithm based on the information in the given attribute.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent d06854f0

crypto/shash.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -518,5 +518,15 @@ int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
		}
		EXPORT_SYMBOL_GPL(crypto_init_shash_spawn);

		struct shash_alg shash_attr_alg(struct rtattr rta, u32 type, u32 mask)
		{
		struct crypto_alg *alg;

		alg = crypto_attr_alg2(rta, &crypto_shash_type, type, mask);
		return IS_ERR(alg) ? ERR_CAST(alg) :
		container_of(alg, struct shash_alg, base);
		}
		EXPORT_SYMBOL_GPL(shash_attr_alg);

		MODULE_LICENSE("GPL");
		MODULE_DESCRIPTION("Synchronous cryptographic hash type");

include/crypto/internal/hash.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -60,6 +60,8 @@ int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
		struct shash_alg *alg,
		struct crypto_instance *inst);

		struct shash_alg shash_attr_alg(struct rtattr rta, u32 type, u32 mask);

		static inline void crypto_ahash_ctx(struct crypto_ahash tfm)
		{
		return crypto_tfm_ctx(&tfm->base);