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author | Eric Biggers <ebiggers@google.com> | 2019-01-03 20:16:24 -0800 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-01-11 14:16:58 +0800 |
commit | 31d40c20983fd26a41541be208687fb2fc62fec3 (patch) | |
tree | 7954a24a29e78c9018b71f99095aa7610003d7d6 /crypto/crypto_null.c | |
parent | 426bcb50856f61f5883b0e2e7f885ca142e7729c (diff) | |
download | linux-31d40c20983fd26a41541be208687fb2fc62fec3.tar.gz linux-31d40c20983fd26a41541be208687fb2fc62fec3.tar.bz2 linux-31d40c20983fd26a41541be208687fb2fc62fec3.zip |
crypto: null - convert ecb-cipher_null to skcipher API
Convert the "ecb-cipher_null" algorithm from the deprecated "blkcipher"
API to the "skcipher" API.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/crypto_null.c')
-rw-r--r-- | crypto/crypto_null.c | 57 |
1 files changed, 32 insertions, 25 deletions
diff --git a/crypto/crypto_null.c b/crypto/crypto_null.c index 0bae59922a80..01630a9c7e01 100644 --- a/crypto/crypto_null.c +++ b/crypto/crypto_null.c @@ -65,6 +65,10 @@ static int null_hash_setkey(struct crypto_shash *tfm, const u8 *key, unsigned int keylen) { return 0; } +static int null_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key, + unsigned int keylen) +{ return 0; } + static int null_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) { return 0; } @@ -74,21 +78,18 @@ static void null_crypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) memcpy(dst, src, NULL_BLOCK_SIZE); } -static int skcipher_null_crypt(struct blkcipher_desc *desc, - struct scatterlist *dst, - struct scatterlist *src, unsigned int nbytes) +static int null_skcipher_crypt(struct skcipher_request *req) { - struct blkcipher_walk walk; + struct skcipher_walk walk; int err; - blkcipher_walk_init(&walk, dst, src, nbytes); - err = blkcipher_walk_virt(desc, &walk); + err = skcipher_walk_virt(&walk, req, false); while (walk.nbytes) { if (walk.src.virt.addr != walk.dst.virt.addr) memcpy(walk.dst.virt.addr, walk.src.virt.addr, walk.nbytes); - err = blkcipher_walk_done(desc, &walk, 0); + err = skcipher_walk_done(&walk, 0); } return err; @@ -109,7 +110,22 @@ static struct shash_alg digest_null = { } }; -static struct crypto_alg null_algs[3] = { { +static struct skcipher_alg skcipher_null = { + .base.cra_name = "ecb(cipher_null)", + .base.cra_driver_name = "ecb-cipher_null", + .base.cra_priority = 100, + .base.cra_blocksize = NULL_BLOCK_SIZE, + .base.cra_ctxsize = 0, + .base.cra_module = THIS_MODULE, + .min_keysize = NULL_KEY_SIZE, + .max_keysize = NULL_KEY_SIZE, + .ivsize = NULL_IV_SIZE, + .setkey = null_skcipher_setkey, + .encrypt = null_skcipher_crypt, + .decrypt = null_skcipher_crypt, +}; + +static struct crypto_alg null_algs[] = { { .cra_name = "cipher_null", .cra_flags = CRYPTO_ALG_TYPE_CIPHER, .cra_blocksize = NULL_BLOCK_SIZE, @@ -122,22 +138,6 @@ static struct crypto_alg null_algs[3] = { { .cia_encrypt = null_crypt, .cia_decrypt = null_crypt } } }, { - .cra_name = "ecb(cipher_null)", - .cra_driver_name = "ecb-cipher_null", - .cra_priority = 100, - .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, - .cra_blocksize = NULL_BLOCK_SIZE, - .cra_type = &crypto_blkcipher_type, - .cra_ctxsize = 0, - .cra_module = THIS_MODULE, - .cra_u = { .blkcipher = { - .min_keysize = NULL_KEY_SIZE, - .max_keysize = NULL_KEY_SIZE, - .ivsize = NULL_IV_SIZE, - .setkey = null_setkey, - .encrypt = skcipher_null_crypt, - .decrypt = skcipher_null_crypt } } -}, { .cra_name = "compress_null", .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, .cra_blocksize = NULL_BLOCK_SIZE, @@ -199,8 +199,14 @@ static int __init crypto_null_mod_init(void) if (ret < 0) goto out_unregister_algs; + ret = crypto_register_skcipher(&skcipher_null); + if (ret < 0) + goto out_unregister_shash; + return 0; +out_unregister_shash: + crypto_unregister_shash(&digest_null); out_unregister_algs: crypto_unregister_algs(null_algs, ARRAY_SIZE(null_algs)); out: @@ -209,8 +215,9 @@ out: static void __exit crypto_null_mod_fini(void) { - crypto_unregister_shash(&digest_null); crypto_unregister_algs(null_algs, ARRAY_SIZE(null_algs)); + crypto_unregister_shash(&digest_null); + crypto_unregister_skcipher(&skcipher_null); } module_init(crypto_null_mod_init); |