diff options
Diffstat (limited to 'fs/ext4/crypto_key.c')
| -rw-r--r-- | fs/ext4/crypto_key.c | 42 |
1 files changed, 20 insertions, 22 deletions
diff --git a/fs/ext4/crypto_key.c b/fs/ext4/crypto_key.c index 9a16d1e75..0129d688d 100644 --- a/fs/ext4/crypto_key.c +++ b/fs/ext4/crypto_key.c @@ -8,6 +8,7 @@ * Written by Michael Halcrow, Ildar Muslukhov, and Uday Savagaonkar, 2015. */ +#include <crypto/skcipher.h> #include <keys/encrypted-type.h> #include <keys/user-type.h> #include <linux/random.h> @@ -41,45 +42,42 @@ static int ext4_derive_key_aes(char deriving_key[EXT4_AES_128_ECB_KEY_SIZE], char derived_key[EXT4_AES_256_XTS_KEY_SIZE]) { int res = 0; - struct ablkcipher_request *req = NULL; + struct skcipher_request *req = NULL; DECLARE_EXT4_COMPLETION_RESULT(ecr); struct scatterlist src_sg, dst_sg; - struct crypto_ablkcipher *tfm = crypto_alloc_ablkcipher("ecb(aes)", 0, - 0); + struct crypto_skcipher *tfm = crypto_alloc_skcipher("ecb(aes)", 0, 0); if (IS_ERR(tfm)) { res = PTR_ERR(tfm); tfm = NULL; goto out; } - crypto_ablkcipher_set_flags(tfm, CRYPTO_TFM_REQ_WEAK_KEY); - req = ablkcipher_request_alloc(tfm, GFP_NOFS); + crypto_skcipher_set_flags(tfm, CRYPTO_TFM_REQ_WEAK_KEY); + req = skcipher_request_alloc(tfm, GFP_NOFS); if (!req) { res = -ENOMEM; goto out; } - ablkcipher_request_set_callback(req, + skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG | CRYPTO_TFM_REQ_MAY_SLEEP, derive_crypt_complete, &ecr); - res = crypto_ablkcipher_setkey(tfm, deriving_key, - EXT4_AES_128_ECB_KEY_SIZE); + res = crypto_skcipher_setkey(tfm, deriving_key, + EXT4_AES_128_ECB_KEY_SIZE); if (res < 0) goto out; sg_init_one(&src_sg, source_key, EXT4_AES_256_XTS_KEY_SIZE); sg_init_one(&dst_sg, derived_key, EXT4_AES_256_XTS_KEY_SIZE); - ablkcipher_request_set_crypt(req, &src_sg, &dst_sg, - EXT4_AES_256_XTS_KEY_SIZE, NULL); - res = crypto_ablkcipher_encrypt(req); + skcipher_request_set_crypt(req, &src_sg, &dst_sg, + EXT4_AES_256_XTS_KEY_SIZE, NULL); + res = crypto_skcipher_encrypt(req); if (res == -EINPROGRESS || res == -EBUSY) { wait_for_completion(&ecr.completion); res = ecr.res; } out: - if (req) - ablkcipher_request_free(req); - if (tfm) - crypto_free_ablkcipher(tfm); + skcipher_request_free(req); + crypto_free_skcipher(tfm); return res; } @@ -90,7 +88,7 @@ void ext4_free_crypt_info(struct ext4_crypt_info *ci) if (ci->ci_keyring_key) key_put(ci->ci_keyring_key); - crypto_free_ablkcipher(ci->ci_ctfm); + crypto_free_skcipher(ci->ci_ctfm); kmem_cache_free(ext4_crypt_info_cachep, ci); } @@ -122,7 +120,7 @@ int _ext4_get_encryption_info(struct inode *inode) struct ext4_encryption_context ctx; const struct user_key_payload *ukp; struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); - struct crypto_ablkcipher *ctfm; + struct crypto_skcipher *ctfm; const char *cipher_str; char raw_key[EXT4_MAX_KEY_SIZE]; char mode; @@ -237,7 +235,7 @@ retry: if (res) goto out; got_key: - ctfm = crypto_alloc_ablkcipher(cipher_str, 0, 0); + ctfm = crypto_alloc_skcipher(cipher_str, 0, 0); if (!ctfm || IS_ERR(ctfm)) { res = ctfm ? PTR_ERR(ctfm) : -ENOMEM; printk(KERN_DEBUG @@ -246,11 +244,11 @@ got_key: goto out; } crypt_info->ci_ctfm = ctfm; - crypto_ablkcipher_clear_flags(ctfm, ~0); - crypto_tfm_set_flags(crypto_ablkcipher_tfm(ctfm), + crypto_skcipher_clear_flags(ctfm, ~0); + crypto_tfm_set_flags(crypto_skcipher_tfm(ctfm), CRYPTO_TFM_REQ_WEAK_KEY); - res = crypto_ablkcipher_setkey(ctfm, raw_key, - ext4_encryption_key_size(mode)); + res = crypto_skcipher_setkey(ctfm, raw_key, + ext4_encryption_key_size(mode)); if (res) goto out; memzero_explicit(raw_key, sizeof(raw_key)); |