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crypto: cryptd - Add support to access underlaying shash

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cryptd_alloc_ahash() will allocate a cryptd-ed ahash for specified
algorithm name. The new allocated one is guaranteed to be cryptd-ed
ahash, so the shash underlying can be gotten via cryptd_ahash_child().

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Huang Ying
2009-08-06 15:35:20 +10:00
committed by Herbert Xu
parent 9382d97af5
commit ace1366369
2 changed files with 52 additions and 0 deletions
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17
include/crypto/cryptd.h
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@@ -7,6 +7,7 @@
#include <linux/crypto.h>
#include <linux/kernel.h>
#include <crypto/hash.h>
struct cryptd_ablkcipher {
struct crypto_ablkcipher base;
@@ -24,4 +25,20 @@ struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name,
struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm);
void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm);
struct cryptd_ahash {
struct crypto_ahash base;
};
static inline struct cryptd_ahash *__cryptd_ahash_cast(
struct crypto_ahash *tfm)
{
return (struct cryptd_ahash *)tfm;
}
/* alg_name should be algorithm to be cryptd-ed */
struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name,
u32 type, u32 mask);
struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm);
void cryptd_free_ahash(struct cryptd_ahash *tfm);
#endif