forked from Minki/linux
a04ea6f7ff
The Camellia, Serpent and Twofish related header files only contain declarations that are shared between different implementations of the respective algorithms residing under arch/x86/crypto, and none of their contents should be used elsewhere. So move the header files into the same location, and use local #includes instead. 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>
132 lines
3.7 KiB
C
132 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Glue Code for AVX assembler versions of Serpent Cipher
|
|
*
|
|
* Copyright (C) 2012 Johannes Goetzfried
|
|
* <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
|
|
*
|
|
* Copyright © 2011-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/crypto.h>
|
|
#include <linux/err.h>
|
|
#include <crypto/algapi.h>
|
|
#include <crypto/internal/simd.h>
|
|
#include <crypto/serpent.h>
|
|
|
|
#include "serpent-avx.h"
|
|
#include "ecb_cbc_helpers.h"
|
|
|
|
/* 8-way parallel cipher functions */
|
|
asmlinkage void serpent_ecb_enc_8way_avx(const void *ctx, u8 *dst,
|
|
const u8 *src);
|
|
EXPORT_SYMBOL_GPL(serpent_ecb_enc_8way_avx);
|
|
|
|
asmlinkage void serpent_ecb_dec_8way_avx(const void *ctx, u8 *dst,
|
|
const u8 *src);
|
|
EXPORT_SYMBOL_GPL(serpent_ecb_dec_8way_avx);
|
|
|
|
asmlinkage void serpent_cbc_dec_8way_avx(const void *ctx, u8 *dst,
|
|
const u8 *src);
|
|
EXPORT_SYMBOL_GPL(serpent_cbc_dec_8way_avx);
|
|
|
|
static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
|
|
const u8 *key, unsigned int keylen)
|
|
{
|
|
return __serpent_setkey(crypto_skcipher_ctx(tfm), key, keylen);
|
|
}
|
|
|
|
static int ecb_encrypt(struct skcipher_request *req)
|
|
{
|
|
ECB_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
|
|
ECB_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_ecb_enc_8way_avx);
|
|
ECB_BLOCK(1, __serpent_encrypt);
|
|
ECB_WALK_END();
|
|
}
|
|
|
|
static int ecb_decrypt(struct skcipher_request *req)
|
|
{
|
|
ECB_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
|
|
ECB_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_ecb_dec_8way_avx);
|
|
ECB_BLOCK(1, __serpent_decrypt);
|
|
ECB_WALK_END();
|
|
}
|
|
|
|
static int cbc_encrypt(struct skcipher_request *req)
|
|
{
|
|
CBC_WALK_START(req, SERPENT_BLOCK_SIZE, -1);
|
|
CBC_ENC_BLOCK(__serpent_encrypt);
|
|
CBC_WALK_END();
|
|
}
|
|
|
|
static int cbc_decrypt(struct skcipher_request *req)
|
|
{
|
|
CBC_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
|
|
CBC_DEC_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_cbc_dec_8way_avx);
|
|
CBC_DEC_BLOCK(1, __serpent_decrypt);
|
|
CBC_WALK_END();
|
|
}
|
|
|
|
static struct skcipher_alg serpent_algs[] = {
|
|
{
|
|
.base.cra_name = "__ecb(serpent)",
|
|
.base.cra_driver_name = "__ecb-serpent-avx",
|
|
.base.cra_priority = 500,
|
|
.base.cra_flags = CRYPTO_ALG_INTERNAL,
|
|
.base.cra_blocksize = SERPENT_BLOCK_SIZE,
|
|
.base.cra_ctxsize = sizeof(struct serpent_ctx),
|
|
.base.cra_module = THIS_MODULE,
|
|
.min_keysize = SERPENT_MIN_KEY_SIZE,
|
|
.max_keysize = SERPENT_MAX_KEY_SIZE,
|
|
.setkey = serpent_setkey_skcipher,
|
|
.encrypt = ecb_encrypt,
|
|
.decrypt = ecb_decrypt,
|
|
}, {
|
|
.base.cra_name = "__cbc(serpent)",
|
|
.base.cra_driver_name = "__cbc-serpent-avx",
|
|
.base.cra_priority = 500,
|
|
.base.cra_flags = CRYPTO_ALG_INTERNAL,
|
|
.base.cra_blocksize = SERPENT_BLOCK_SIZE,
|
|
.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,
|
|
.setkey = serpent_setkey_skcipher,
|
|
.encrypt = cbc_encrypt,
|
|
.decrypt = cbc_decrypt,
|
|
},
|
|
};
|
|
|
|
static struct simd_skcipher_alg *serpent_simd_algs[ARRAY_SIZE(serpent_algs)];
|
|
|
|
static int __init serpent_init(void)
|
|
{
|
|
const char *feature_name;
|
|
|
|
if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM,
|
|
&feature_name)) {
|
|
pr_info("CPU feature '%s' is not supported.\n", feature_name);
|
|
return -ENODEV;
|
|
}
|
|
|
|
return simd_register_skciphers_compat(serpent_algs,
|
|
ARRAY_SIZE(serpent_algs),
|
|
serpent_simd_algs);
|
|
}
|
|
|
|
static void __exit serpent_exit(void)
|
|
{
|
|
simd_unregister_skciphers(serpent_algs, ARRAY_SIZE(serpent_algs),
|
|
serpent_simd_algs);
|
|
}
|
|
|
|
module_init(serpent_init);
|
|
module_exit(serpent_exit);
|
|
|
|
MODULE_DESCRIPTION("Serpent Cipher Algorithm, AVX optimized");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS_CRYPTO("serpent");
|