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authorHerbert Xu <herbert@gondor.apana.org.au>2006-08-13 14:16:39 +1000
committerHerbert Xu <herbert@gondor.apana.org.au>2006-09-21 11:41:02 +1000
commit560c06ae1ab7c677002ea3b6ac83521bf12ee07d (patch)
tree374ed69a7e23ba9d07458d20672aac6ae552ae51 /crypto/digest.c
parent25cdbcd9e5d20e431f829cafce48a418830011f4 (diff)
downloadlinux-560c06ae1ab7c677002ea3b6ac83521bf12ee07d.tar.bz2
[CRYPTO] api: Get rid of flags argument to setkey
Now that the tfm is passed directly to setkey instead of the ctx, we no longer need to pass the &tfm->crt_flags pointer. This patch also gets rid of a few unnecessary checks on the key length for ciphers as the cipher layer guarantees that the key length is within the bounds specified by the algorithm. Rather than testing dia_setkey every time, this patch does it only once during crypto_alloc_tfm. The redundant check from crypto_digest_setkey is also removed. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/digest.c')
-rw-r--r--crypto/digest.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/crypto/digest.c b/crypto/digest.c
index 603006a7bef2..0df7f392a56a 100644
--- a/crypto/digest.c
+++ b/crypto/digest.c
@@ -76,12 +76,16 @@ static void final(struct crypto_tfm *tfm, u8 *out)
tfm->__crt_alg->cra_digest.dia_final(tfm, out);
}
+static int nosetkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
+{
+ tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
+ return -ENOSYS;
+}
+
static int setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
{
- u32 flags;
- if (tfm->__crt_alg->cra_digest.dia_setkey == NULL)
- return -ENOSYS;
- return tfm->__crt_alg->cra_digest.dia_setkey(tfm, key, keylen, &flags);
+ tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
+ return tfm->__crt_alg->cra_digest.dia_setkey(tfm, key, keylen);
}
static void digest(struct crypto_tfm *tfm,
@@ -100,12 +104,13 @@ int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags)
int crypto_init_digest_ops(struct crypto_tfm *tfm)
{
struct digest_tfm *ops = &tfm->crt_digest;
+ struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
ops->dit_init = init;
ops->dit_update = update;
ops->dit_final = final;
ops->dit_digest = digest;
- ops->dit_setkey = setkey;
+ ops->dit_setkey = dalg->dia_setkey ? setkey : nosetkey;
return crypto_alloc_hmac_block(tfm);
}