aboutsummaryrefslogtreecommitdiff
path: root/crypto/shash.c
diff options
context:
space:
mode:
authorHerbert Xu <herbert@gondor.apana.org.au>2008-11-08 08:56:57 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2008-12-25 11:02:06 +1100
commit3751f402e099893c34089ed303dca6f5f92dbfd1 (patch)
treeb052aa508f5c82478fb90a1525bfd854644406df /crypto/shash.c
parentb812eb0076235743872b5c9d18714d2324cc668d (diff)
downloadlinux-stericsson-3751f402e099893c34089ed303dca6f5f92dbfd1.tar.gz
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.c3
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);