Contributors: 11
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jussi Kivilinna |
206 |
36.40% |
4 |
19.05% |
| Johannes Goetzfried |
118 |
20.85% |
1 |
4.76% |
| Ard Biesheuvel |
107 |
18.90% |
2 |
9.52% |
| Eric Biggers |
85 |
15.02% |
4 |
19.05% |
| Ingo Molnar |
22 |
3.89% |
2 |
9.52% |
| Kees Cook |
9 |
1.59% |
2 |
9.52% |
| Borislav Petkov |
8 |
1.41% |
2 |
9.52% |
| Randy Dunlap |
4 |
0.71% |
1 |
4.76% |
| James Morris |
3 |
0.53% |
1 |
4.76% |
| Thomas Gleixner |
2 |
0.35% |
1 |
4.76% |
| Dave Hansen |
2 |
0.35% |
1 |
4.76% |
| Total |
566 |
|
21 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Glue Code for x86_64/AVX2 assembler optimized version of Serpent
*
* Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/crypto.h>
#include <linux/err.h>
#include <crypto/algapi.h>
#include <crypto/serpent.h>
#include "serpent-avx.h"
#include "ecb_cbc_helpers.h"
#define SERPENT_AVX2_PARALLEL_BLOCKS 16
/* 16-way AVX2 parallel cipher functions */
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);
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_AVX2_PARALLEL_BLOCKS, serpent_ecb_enc_16way);
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_AVX2_PARALLEL_BLOCKS, serpent_ecb_dec_16way);
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_AVX2_PARALLEL_BLOCKS, serpent_cbc_dec_16way);
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-avx2",
.base.cra_priority = 600,
.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-avx2",
.base.cra_priority = 600,
.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 int __init serpent_avx2_init(void)
{
const char *feature_name;
if (!boot_cpu_has(X86_FEATURE_AVX2) || !boot_cpu_has(X86_FEATURE_OSXSAVE)) {
pr_info("AVX2 instructions are not detected.\n");
return -ENODEV;
}
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 crypto_register_skciphers(serpent_algs,
ARRAY_SIZE(serpent_algs));
}
static void __exit serpent_avx2_fini(void)
{
crypto_unregister_skciphers(serpent_algs, ARRAY_SIZE(serpent_algs));
}
module_init(serpent_avx2_init);
module_exit(serpent_avx2_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Serpent Cipher Algorithm, AVX2 optimized");
MODULE_ALIAS_CRYPTO("serpent");
MODULE_ALIAS_CRYPTO("serpent-asm");