diff options
Diffstat (limited to 'drivers/md/dm-crypt.c')
| -rw-r--r-- | drivers/md/dm-crypt.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 91d4081cb00e..73f8be837a45 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -122,7 +122,8 @@ static int crypt_iv_essiv_ctr(struct crypt_config *cc, struct dm_target *ti, const char *opts) { struct crypto_cipher *essiv_tfm; - struct crypto_tfm *hash_tfm; + struct crypto_hash *hash_tfm; + struct hash_desc desc; struct scatterlist sg; unsigned int saltsize; u8 *salt; @@ -134,29 +135,30 @@ static int crypt_iv_essiv_ctr(struct crypt_config *cc, struct dm_target *ti, } /* Hash the cipher key with the given hash algorithm */ - hash_tfm = crypto_alloc_tfm(opts, CRYPTO_TFM_REQ_MAY_SLEEP); - if (hash_tfm == NULL) { + hash_tfm = crypto_alloc_hash(opts, 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(hash_tfm)) { ti->error = "Error initializing ESSIV hash"; - return -EINVAL; - } - - if (crypto_tfm_alg_type(hash_tfm) != CRYPTO_ALG_TYPE_DIGEST) { - ti->error = "Expected digest algorithm for ESSIV hash"; - crypto_free_tfm(hash_tfm); - return -EINVAL; + return PTR_ERR(hash_tfm); } - saltsize = crypto_tfm_alg_digestsize(hash_tfm); + saltsize = crypto_hash_digestsize(hash_tfm); salt = kmalloc(saltsize, GFP_KERNEL); if (salt == NULL) { ti->error = "Error kmallocing salt storage in ESSIV"; - crypto_free_tfm(hash_tfm); + crypto_free_hash(hash_tfm); return -ENOMEM; } sg_set_buf(&sg, cc->key, cc->key_size); - crypto_digest_digest(hash_tfm, &sg, 1, salt); - crypto_free_tfm(hash_tfm); + desc.tfm = hash_tfm; + desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP; + err = crypto_hash_digest(&desc, &sg, cc->key_size, salt); + crypto_free_hash(hash_tfm); + + if (err) { + ti->error = "Error calculating hash in ESSIV"; + return err; + } /* Setup the essiv_tfm with the given salt */ essiv_tfm = crypto_alloc_cipher(cc->cipher, 0, CRYPTO_ALG_ASYNC); |