[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/twofish_common.c b/crypto/twofish_common.c
index 1ae0280..b4b9c0c 100644
--- a/crypto/twofish_common.c
+++ b/crypto/twofish_common.c
@@ -580,11 +580,11 @@
ctx->a[(j) + 1] = rol32(y, 9)
/* Perform the key setup. */
-int twofish_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int key_len, u32 *flags)
+int twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len)
{
struct twofish_ctx *ctx = crypto_tfm_ctx(tfm);
+ u32 *flags = &tfm->crt_flags;
int i, j, k;
@@ -600,7 +600,7 @@
u8 tmp;
/* Check key length. */
- if (key_len != 16 && key_len != 24 && key_len != 32)
+ if (key_len % 8)
{
*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
return -EINVAL; /* unsupported key length */