diff options
| -rw-r--r-- | security/keys/big_key.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/security/keys/big_key.c b/security/keys/big_key.c index 9e443fccad4c..c0b3030b5634 100644 --- a/security/keys/big_key.c +++ b/security/keys/big_key.c @@ -18,6 +18,7 @@ #include <keys/user-type.h> #include <keys/big_key-type.h> #include <crypto/rng.h> +#include <crypto/skcipher.h> /* * Layout of key payload words. @@ -74,7 +75,7 @@ static const char big_key_alg_name[] = "ecb(aes)"; * Crypto algorithms for big_key data encryption */ static struct crypto_rng *big_key_rng; -static struct crypto_blkcipher *big_key_blkcipher; +static struct crypto_skcipher *big_key_skcipher; /* * Generate random key to encrypt big_key data @@ -91,22 +92,26 @@ static int big_key_crypt(enum big_key_op op, u8 *data, size_t datalen, u8 *key) { int ret = -EINVAL; struct scatterlist sgio; - struct blkcipher_desc desc; + SKCIPHER_REQUEST_ON_STACK(req, big_key_skcipher); - if (crypto_blkcipher_setkey(big_key_blkcipher, key, ENC_KEY_SIZE)) { + if (crypto_skcipher_setkey(big_key_skcipher, key, ENC_KEY_SIZE)) { ret = -EAGAIN; goto error; } - desc.flags = 0; - desc.tfm = big_key_blkcipher; + skcipher_request_set_tfm(req, big_key_skcipher); + skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP, + NULL, NULL); sg_init_one(&sgio, data, datalen); + skcipher_request_set_crypt(req, &sgio, &sgio, datalen, NULL); if (op == BIG_KEY_ENC) - ret = crypto_blkcipher_encrypt(&desc, &sgio, &sgio, datalen); + ret = crypto_skcipher_encrypt(req); else - ret = crypto_blkcipher_decrypt(&desc, &sgio, &sgio, datalen); + ret = crypto_skcipher_decrypt(req); + + skcipher_request_zero(req); error: return ret; @@ -140,7 +145,7 @@ int big_key_preparse(struct key_preparsed_payload *prep) * * File content is stored encrypted with randomly generated key. */ - size_t enclen = ALIGN(datalen, crypto_blkcipher_blocksize(big_key_blkcipher)); + size_t enclen = ALIGN(datalen, crypto_skcipher_blocksize(big_key_skcipher)); /* prepare aligned data to encrypt */ data = kmalloc(enclen, GFP_KERNEL); @@ -288,7 +293,7 @@ long big_key_read(const struct key *key, char __user *buffer, size_t buflen) struct file *file; u8 *data; u8 *enckey = (u8 *)key->payload.data[big_key_data]; - size_t enclen = ALIGN(datalen, crypto_blkcipher_blocksize(big_key_blkcipher)); + size_t enclen = ALIGN(datalen, crypto_skcipher_blocksize(big_key_skcipher)); data = kmalloc(enclen, GFP_KERNEL); if (!data) @@ -359,9 +364,10 @@ static int __init big_key_crypto_init(void) goto error; /* init block cipher */ - big_key_blkcipher = crypto_alloc_blkcipher(big_key_alg_name, 0, 0); - if (IS_ERR(big_key_blkcipher)) { - big_key_blkcipher = NULL; + big_key_skcipher = crypto_alloc_skcipher(big_key_alg_name, + 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(big_key_skcipher)) { + big_key_skcipher = NULL; ret = -EFAULT; goto error; } |