aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorHerbert Xu <herbert@gondor.apana.org.au>2009-07-08 17:56:28 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2009-07-08 18:58:30 +0800
commit7d6f56400a695af497a8b7c23ea0ff9c3d9d99f4 (patch)
tree53447ff76fda984ca3fb59aca2bd5f3454842b14
parentcrypto: api - Add crypto_attr_alg2 helper (diff)
downloadlinux-dev-7d6f56400a695af497a8b7c23ea0ff9c3d9d99f4.tar.xz
linux-dev-7d6f56400a695af497a8b7c23ea0ff9c3d9d99f4.zip
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>
-rw-r--r--crypto/shash.c10
-rw-r--r--include/crypto/internal/hash.h2
2 files changed, 12 insertions, 0 deletions
diff --git a/crypto/shash.c b/crypto/shash.c
index 97f6c8ba103a..21bcff6be5b0 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -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");
diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h
index 6cc824b79331..e2ab35a74c62 100644
--- a/include/crypto/internal/hash.h
+++ b/include/crypto/internal/hash.h
@@ -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);