diff options
| -rw-r--r-- | crypto/shash.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/crypto/shash.c b/crypto/shash.c index 834d9d24cda..7713b520bc9 100644 --- a/crypto/shash.c +++ b/crypto/shash.c @@ -240,12 +240,17 @@ int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc) struct crypto_hash_walk walk; int nbytes; - for (nbytes = crypto_hash_walk_first(req, &walk); nbytes > 0; - nbytes = crypto_hash_walk_done(&walk, nbytes)) + nbytes = crypto_hash_walk_first(req, &walk); + if (!nbytes) + return crypto_shash_final(desc, req->result); + + do { nbytes = crypto_hash_walk_last(&walk) ? crypto_shash_finup(desc, walk.data, nbytes, req->result) : crypto_shash_update(desc, walk.data, nbytes); + nbytes = crypto_hash_walk_done(&walk, nbytes); + } while (nbytes > 0); return nbytes; } |