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crypto: hash - Make setkey optional

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Since most cryptographic hash algorithms have no keys, this patch
makes the setkey function optional for ahash and shash.

Signed-off-by: Herbert Xu <[email protected]>
This commit is contained in:
Herbert Xu 2008-11-08 08:56:57 +08:00
commit 3751f402e0
2 changed files with 10 additions and 1 deletions
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3
crypto/shash.c
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@ -55,6 +55,9 @@ int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key,
struct shash_alg *shash = crypto_shash_alg(tfm);
unsigned long alignmask = crypto_shash_alignmask(tfm);
if (!shash->setkey)
return -ENOSYS;
if ((unsigned long)key & alignmask)
return shash_setkey_unaligned(tfm, key, keylen);