diff options
author | Ard Biesheuvel <ardb@kernel.org> | 2021-01-05 17:47:55 +0100 |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-01-14 17:10:28 +1100 |
commit | 2e9440ae6eab492572463d8cb266381264867723 (patch) | |
tree | e0a8a0bf7105811ec7a189aeef2e6d6fdd67aacb /arch/x86/crypto/serpent_avx2_glue.c | |
parent | a1f91ecf812ac333ee2897f3eb2d8f4f6b4ce942 (diff) |
crypto: x86/serpent - drop CTR mode implementation
Serpent in CTR mode is never used by the kernel directly, and is highly
unlikely to be relied upon by dm-crypt or algif_skcipher. So let's drop
the accelerated CTR mode implementation, and instead, rely on the CTR
template and the bare cipher.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto/serpent_avx2_glue.c')
-rw-r--r-- | arch/x86/crypto/serpent_avx2_glue.c | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/arch/x86/crypto/serpent_avx2_glue.c b/arch/x86/crypto/serpent_avx2_glue.c index 9cdf2c078e21..28e542c6512a 100644 --- a/arch/x86/crypto/serpent_avx2_glue.c +++ b/arch/x86/crypto/serpent_avx2_glue.c @@ -22,8 +22,6 @@ asmlinkage void serpent_ecb_enc_16way(const void *ctx, u8 *dst, const u8 *src); asmlinkage void serpent_ecb_dec_16way(const void *ctx, u8 *dst, const u8 *src); asmlinkage void serpent_cbc_dec_16way(const void *ctx, u8 *dst, const u8 *src); -asmlinkage void serpent_ctr_16way(const void *ctx, u8 *dst, const u8 *src, - le128 *iv); static int serpent_setkey_skcipher(struct crypto_skcipher *tfm, const u8 *key, unsigned int keylen) { @@ -46,22 +44,6 @@ static const struct common_glue_ctx serpent_enc = { } } }; -static const struct common_glue_ctx serpent_ctr = { - .num_funcs = 3, - .fpu_blocks_limit = 8, - - .funcs = { { - .num_blocks = 16, - .fn_u = { .ctr = serpent_ctr_16way } - }, { - .num_blocks = 8, - .fn_u = { .ctr = serpent_ctr_8way_avx } - }, { - .num_blocks = 1, - .fn_u = { .ctr = __serpent_crypt_ctr } - } } -}; - static const struct common_glue_ctx serpent_dec = { .num_funcs = 3, .fpu_blocks_limit = 8, @@ -114,11 +96,6 @@ static int cbc_decrypt(struct skcipher_request *req) return glue_cbc_decrypt_req_128bit(&serpent_dec_cbc, req); } -static int ctr_crypt(struct skcipher_request *req) -{ - return glue_ctr_req_128bit(&serpent_ctr, req); -} - static struct skcipher_alg serpent_algs[] = { { .base.cra_name = "__ecb(serpent)", @@ -147,21 +124,6 @@ static struct skcipher_alg serpent_algs[] = { .setkey = serpent_setkey_skcipher, .encrypt = cbc_encrypt, .decrypt = cbc_decrypt, - }, { - .base.cra_name = "__ctr(serpent)", - .base.cra_driver_name = "__ctr-serpent-avx2", - .base.cra_priority = 600, - .base.cra_flags = CRYPTO_ALG_INTERNAL, - .base.cra_blocksize = 1, - .base.cra_ctxsize = sizeof(struct serpent_ctx), - .base.cra_module = THIS_MODULE, - .min_keysize = SERPENT_MIN_KEY_SIZE, - .max_keysize = SERPENT_MAX_KEY_SIZE, - .ivsize = SERPENT_BLOCK_SIZE, - .chunksize = SERPENT_BLOCK_SIZE, - .setkey = serpent_setkey_skcipher, - .encrypt = ctr_crypt, - .decrypt = ctr_crypt, }, }; |