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authorHerbert Xu <herbert@gondor.apana.org.au>2009-07-15 12:39:05 (GMT)
committerHerbert Xu <herbert@gondor.apana.org.au>2009-07-15 12:39:05 (GMT)
commita70c522520d967844c01fa01459edc698fc54544 (patch)
treefa132bf2be983b3300340779c155bc8ff95708b0 /crypto/ahash.c
parentfaae890883624e14a328863eafabf54a36698774 (diff)
crypto: ahash - Fix setkey crash
When the alignment check was made unconditional for ahash we may end up crashing on shash algorithms because we're always calling alg->setkey instead of tfm->setkey. This patch fixes it. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/ahash.c')
-rw-r--r--crypto/ahash.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/crypto/ahash.c b/crypto/ahash.c
index ac0798d..28a33d0 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -145,7 +145,6 @@ int crypto_hash_walk_first_compat(struct hash_desc *hdesc,
static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
- struct ahash_alg *ahash = crypto_ahash_alg(tfm);
unsigned long alignmask = crypto_ahash_alignmask(tfm);
int ret;
u8 *buffer, *alignbuffer;
@@ -158,7 +157,7 @@ static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
memcpy(alignbuffer, key, keylen);
- ret = ahash->setkey(tfm, alignbuffer, keylen);
+ ret = tfm->setkey(tfm, alignbuffer, keylen);
kzfree(buffer);
return ret;
}
@@ -166,13 +165,12 @@ static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
- struct ahash_alg *ahash = crypto_ahash_alg(tfm);
unsigned long alignmask = crypto_ahash_alignmask(tfm);
if ((unsigned long)key & alignmask)
return ahash_setkey_unaligned(tfm, key, keylen);
- return ahash->setkey(tfm, key, keylen);
+ return tfm->setkey(tfm, key, keylen);
}
EXPORT_SYMBOL_GPL(crypto_ahash_setkey);

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