mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 00:17:44 +00:00
ea55cfc3f9
Replace the glue helper dependency with implementations of ECB and CBC based on the new CPP macros, which avoid the need for indirect calls. 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>
124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Glue Code for the AVX assembler implementation of the Cast6 Cipher
|
|
*
|
|
* Copyright (C) 2012 Johannes Goetzfried
|
|
* <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
|
|
*
|
|
* Copyright © 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/cast6.h>
|
|
#include <crypto/internal/simd.h>
|
|
|
|
#include "ecb_cbc_helpers.h"
|
|
|
|
#define CAST6_PARALLEL_BLOCKS 8
|
|
|
|
asmlinkage void cast6_ecb_enc_8way(const void *ctx, u8 *dst, const u8 *src);
|
|
asmlinkage void cast6_ecb_dec_8way(const void *ctx, u8 *dst, const u8 *src);
|
|
|
|
asmlinkage void cast6_cbc_dec_8way(const void *ctx, u8 *dst, const u8 *src);
|
|
|
|
static int cast6_setkey_skcipher(struct crypto_skcipher *tfm,
|
|
const u8 *key, unsigned int keylen)
|
|
{
|
|
return cast6_setkey(&tfm->base, key, keylen);
|
|
}
|
|
|
|
static int ecb_encrypt(struct skcipher_request *req)
|
|
{
|
|
ECB_WALK_START(req, CAST6_BLOCK_SIZE, CAST6_PARALLEL_BLOCKS);
|
|
ECB_BLOCK(CAST6_PARALLEL_BLOCKS, cast6_ecb_enc_8way);
|
|
ECB_BLOCK(1, __cast6_encrypt);
|
|
ECB_WALK_END();
|
|
}
|
|
|
|
static int ecb_decrypt(struct skcipher_request *req)
|
|
{
|
|
ECB_WALK_START(req, CAST6_BLOCK_SIZE, CAST6_PARALLEL_BLOCKS);
|
|
ECB_BLOCK(CAST6_PARALLEL_BLOCKS, cast6_ecb_dec_8way);
|
|
ECB_BLOCK(1, __cast6_decrypt);
|
|
ECB_WALK_END();
|
|
}
|
|
|
|
static int cbc_encrypt(struct skcipher_request *req)
|
|
{
|
|
CBC_WALK_START(req, CAST6_BLOCK_SIZE, -1);
|
|
CBC_ENC_BLOCK(__cast6_encrypt);
|
|
CBC_WALK_END();
|
|
}
|
|
|
|
static int cbc_decrypt(struct skcipher_request *req)
|
|
{
|
|
CBC_WALK_START(req, CAST6_BLOCK_SIZE, CAST6_PARALLEL_BLOCKS);
|
|
CBC_DEC_BLOCK(CAST6_PARALLEL_BLOCKS, cast6_cbc_dec_8way);
|
|
CBC_DEC_BLOCK(1, __cast6_decrypt);
|
|
CBC_WALK_END();
|
|
}
|
|
|
|
static struct skcipher_alg cast6_algs[] = {
|
|
{
|
|
.base.cra_name = "__ecb(cast6)",
|
|
.base.cra_driver_name = "__ecb-cast6-avx",
|
|
.base.cra_priority = 200,
|
|
.base.cra_flags = CRYPTO_ALG_INTERNAL,
|
|
.base.cra_blocksize = CAST6_BLOCK_SIZE,
|
|
.base.cra_ctxsize = sizeof(struct cast6_ctx),
|
|
.base.cra_module = THIS_MODULE,
|
|
.min_keysize = CAST6_MIN_KEY_SIZE,
|
|
.max_keysize = CAST6_MAX_KEY_SIZE,
|
|
.setkey = cast6_setkey_skcipher,
|
|
.encrypt = ecb_encrypt,
|
|
.decrypt = ecb_decrypt,
|
|
}, {
|
|
.base.cra_name = "__cbc(cast6)",
|
|
.base.cra_driver_name = "__cbc-cast6-avx",
|
|
.base.cra_priority = 200,
|
|
.base.cra_flags = CRYPTO_ALG_INTERNAL,
|
|
.base.cra_blocksize = CAST6_BLOCK_SIZE,
|
|
.base.cra_ctxsize = sizeof(struct cast6_ctx),
|
|
.base.cra_module = THIS_MODULE,
|
|
.min_keysize = CAST6_MIN_KEY_SIZE,
|
|
.max_keysize = CAST6_MAX_KEY_SIZE,
|
|
.ivsize = CAST6_BLOCK_SIZE,
|
|
.setkey = cast6_setkey_skcipher,
|
|
.encrypt = cbc_encrypt,
|
|
.decrypt = cbc_decrypt,
|
|
},
|
|
};
|
|
|
|
static struct simd_skcipher_alg *cast6_simd_algs[ARRAY_SIZE(cast6_algs)];
|
|
|
|
static int __init cast6_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(cast6_algs,
|
|
ARRAY_SIZE(cast6_algs),
|
|
cast6_simd_algs);
|
|
}
|
|
|
|
static void __exit cast6_exit(void)
|
|
{
|
|
simd_unregister_skciphers(cast6_algs, ARRAY_SIZE(cast6_algs),
|
|
cast6_simd_algs);
|
|
}
|
|
|
|
module_init(cast6_init);
|
|
module_exit(cast6_exit);
|
|
|
|
MODULE_DESCRIPTION("Cast6 Cipher Algorithm, AVX optimized");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS_CRYPTO("cast6");
|