xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

crypto: ahash - introduce crypto_grab_ahash()

Browse Source 
Currently, ahash spawns are initialized by using ahash_attr_alg() or
crypto_find_alg() to look up the ahash algorithm, then calling
crypto_init_ahash_spawn().

This is different from how skcipher, aead, and akcipher spawns are
initialized (they use crypto_grab_*()), and for no good reason.  This
difference introduces unnecessary complexity.

The crypto_grab_*() functions used to have some problems, like not
holding a reference to the algorithm and requiring the caller to
initialize spawn->base.inst.  But those problems are fixed now.

So, let's introduce crypto_grab_ahash() so that we can convert all
templates to the same way of initializing their spawns.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers
2020-01-02 19:58:50 -08:00
committed by Herbert Xu
parent fdfad1fffc
commit 84a9c938e5
2 changed files with 19 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
include/crypto/internal/hash.h
View File

@@ -109,11 +109,21 @@ int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn,
struct hash_alg_common *alg,
struct crypto_instance *inst);
int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,
struct crypto_instance *inst,
const char *name, u32 type, u32 mask);
static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
{
crypto_drop_spawn(&spawn->base);
}
static inline struct hash_alg_common *crypto_spawn_ahash_alg(
struct crypto_ahash_spawn *spawn)
{
return __crypto_hash_alg_common(spawn->base.alg);
}
struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
int crypto_register_shash(struct shash_alg *alg);