Commit 3751f402 authored by Herbert Xu's avatar Herbert Xu

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: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent b812eb00
......@@ -162,6 +162,12 @@ static int ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
return ahash->setkey(tfm, key, keylen);
}
static int ahash_nosetkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
return -ENOSYS;
}
int crypto_ahash_import(struct ahash_request *req, const u8 *in)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
......@@ -194,7 +200,7 @@ static int crypto_init_ahash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
crt->update = alg->update;
crt->final = alg->final;
crt->digest = alg->digest;
crt->setkey = ahash_setkey;
crt->setkey = alg->setkey ? ahash_setkey : ahash_nosetkey;
crt->digestsize = alg->digestsize;
return 0;
......
......@@ -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);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment