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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2008-11-08 08:56:57 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2008-12-25 11:02:06 +1100 |
| commit | 3751f402e099893c34089ed303dca6f5f92dbfd1 (patch) | |
| tree | b052aa508f5c82478fb90a1525bfd854644406df /crypto/shash.c | |
| parent | b812eb0076235743872b5c9d18714d2324cc668d (diff) | |
| download | linux-3751f402e099893c34089ed303dca6f5f92dbfd1.tar.gz linux-3751f402e099893c34089ed303dca6f5f92dbfd1.tar.bz2 linux-3751f402e099893c34089ed303dca6f5f92dbfd1.zip | |
crypto: hash - Make setkey optional
Since most cryptographic hash algorithms have no keys, this patch
makes the setkey function optional for ahash and shash.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/shash.c')
| -rw-r--r-- | crypto/shash.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/crypto/shash.c b/crypto/shash.c index 50d69a4e4b61..c9df367332ff 100644 --- a/crypto/shash.c +++ b/crypto/shash.c @@ -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); |