[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>
diff --git a/crypto/digest.c b/crypto/digest.c
index 603006a..0df7f39 100644
--- a/crypto/digest.c
+++ b/crypto/digest.c
@@ -76,12 +76,16 @@
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_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);
}