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-rw-r--r--arch/x86/crypto/twofish_avx_glue.c268
1 files changed, 33 insertions, 235 deletions
diff --git a/arch/x86/crypto/twofish_avx_glue.c b/arch/x86/crypto/twofish_avx_glue.c
index 66d989230d10..9e20db013750 100644
--- a/arch/x86/crypto/twofish_avx_glue.c
+++ b/arch/x86/crypto/twofish_avx_glue.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Glue Code for AVX assembler version of Twofish Cipher
*
@@ -5,22 +6,6 @@
* <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
*
* Copyright © 2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
- *
*/
#include <linux/module.h>
@@ -28,29 +13,18 @@
#include <linux/crypto.h>
#include <linux/err.h>
#include <crypto/algapi.h>
-#include <crypto/internal/simd.h>
#include <crypto/twofish.h>
-#include <crypto/xts.h>
-#include <asm/crypto/glue_helper.h>
-#include <asm/crypto/twofish.h>
+
+#include "twofish.h"
+#include "ecb_cbc_helpers.h"
#define TWOFISH_PARALLEL_BLOCKS 8
/* 8-way parallel cipher functions */
-asmlinkage void twofish_ecb_enc_8way(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src);
-asmlinkage void twofish_ecb_dec_8way(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src);
+asmlinkage void twofish_ecb_enc_8way(const void *ctx, u8 *dst, const u8 *src);
+asmlinkage void twofish_ecb_dec_8way(const void *ctx, u8 *dst, const u8 *src);
-asmlinkage void twofish_cbc_dec_8way(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src);
-asmlinkage void twofish_ctr_8way(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src, le128 *iv);
-
-asmlinkage void twofish_xts_enc_8way(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src, le128 *iv);
-asmlinkage void twofish_xts_dec_8way(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src, le128 *iv);
+asmlinkage void twofish_cbc_dec_8way(const void *ctx, u8 *dst, const u8 *src);
static int twofish_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
@@ -58,192 +32,50 @@ static int twofish_setkey_skcipher(struct crypto_skcipher *tfm,
return twofish_setkey(&tfm->base, key, keylen);
}
-static inline void twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src)
+static inline void twofish_enc_blk_3way(const void *ctx, u8 *dst, const u8 *src)
{
__twofish_enc_blk_3way(ctx, dst, src, false);
}
-static void twofish_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv)
-{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv,
- GLUE_FUNC_CAST(twofish_enc_blk));
-}
-
-static void twofish_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv)
-{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv,
- GLUE_FUNC_CAST(twofish_dec_blk));
-}
-
-struct twofish_xts_ctx {
- struct twofish_ctx tweak_ctx;
- struct twofish_ctx crypt_ctx;
-};
-
-static int xts_twofish_setkey(struct crypto_skcipher *tfm, const u8 *key,
- unsigned int keylen)
-{
- struct twofish_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
- u32 *flags = &tfm->base.crt_flags;
- int err;
-
- err = xts_verify_key(tfm, key, keylen);
- if (err)
- return err;
-
- /* first half of xts-key is for crypt */
- err = __twofish_setkey(&ctx->crypt_ctx, key, keylen / 2, flags);
- if (err)
- return err;
-
- /* second half of xts-key is for tweak */
- return __twofish_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2,
- flags);
-}
-
-static const struct common_glue_ctx twofish_enc = {
- .num_funcs = 3,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_ecb_enc_8way) }
- }, {
- .num_blocks = 3,
- .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_enc_blk_3way) }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_enc_blk) }
- } }
-};
-
-static const struct common_glue_ctx twofish_ctr = {
- .num_funcs = 3,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(twofish_ctr_8way) }
- }, {
- .num_blocks = 3,
- .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(twofish_enc_blk_ctr_3way) }
- }, {
- .num_blocks = 1,
- .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(twofish_enc_blk_ctr) }
- } }
-};
-
-static const struct common_glue_ctx twofish_enc_xts = {
- .num_funcs = 2,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_enc_8way) }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_enc) }
- } }
-};
-
-static const struct common_glue_ctx twofish_dec = {
- .num_funcs = 3,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_ecb_dec_8way) }
- }, {
- .num_blocks = 3,
- .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_dec_blk_3way) }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_dec_blk) }
- } }
-};
-
-static const struct common_glue_ctx twofish_dec_cbc = {
- .num_funcs = 3,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_cbc_dec_8way) }
- }, {
- .num_blocks = 3,
- .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_dec_blk_cbc_3way) }
- }, {
- .num_blocks = 1,
- .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_dec_blk) }
- } }
-};
-
-static const struct common_glue_ctx twofish_dec_xts = {
- .num_funcs = 2,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_dec_8way) }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_dec) }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&twofish_enc, req);
+ ECB_WALK_START(req, TF_BLOCK_SIZE, TWOFISH_PARALLEL_BLOCKS);
+ ECB_BLOCK(TWOFISH_PARALLEL_BLOCKS, twofish_ecb_enc_8way);
+ ECB_BLOCK(3, twofish_enc_blk_3way);
+ ECB_BLOCK(1, twofish_enc_blk);
+ ECB_WALK_END();
}
static int ecb_decrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&twofish_dec, req);
+ ECB_WALK_START(req, TF_BLOCK_SIZE, TWOFISH_PARALLEL_BLOCKS);
+ ECB_BLOCK(TWOFISH_PARALLEL_BLOCKS, twofish_ecb_dec_8way);
+ ECB_BLOCK(3, twofish_dec_blk_3way);
+ ECB_BLOCK(1, twofish_dec_blk);
+ ECB_WALK_END();
}
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(GLUE_FUNC_CAST(twofish_enc_blk),
- req);
+ CBC_WALK_START(req, TF_BLOCK_SIZE, -1);
+ CBC_ENC_BLOCK(twofish_enc_blk);
+ CBC_WALK_END();
}
static int cbc_decrypt(struct skcipher_request *req)
{
- return glue_cbc_decrypt_req_128bit(&twofish_dec_cbc, req);
-}
-
-static int ctr_crypt(struct skcipher_request *req)
-{
- return glue_ctr_req_128bit(&twofish_ctr, req);
-}
-
-static int xts_encrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct twofish_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&twofish_enc_xts, req,
- XTS_TWEAK_CAST(twofish_enc_blk),
- &ctx->tweak_ctx, &ctx->crypt_ctx);
-}
-
-static int xts_decrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct twofish_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&twofish_dec_xts, req,
- XTS_TWEAK_CAST(twofish_enc_blk),
- &ctx->tweak_ctx, &ctx->crypt_ctx);
+ CBC_WALK_START(req, TF_BLOCK_SIZE, TWOFISH_PARALLEL_BLOCKS);
+ CBC_DEC_BLOCK(TWOFISH_PARALLEL_BLOCKS, twofish_cbc_dec_8way);
+ CBC_DEC_BLOCK(3, twofish_dec_blk_cbc_3way);
+ CBC_DEC_BLOCK(1, twofish_dec_blk);
+ CBC_WALK_END();
}
static struct skcipher_alg twofish_algs[] = {
{
- .base.cra_name = "__ecb(twofish)",
- .base.cra_driver_name = "__ecb-twofish-avx",
+ .base.cra_name = "ecb(twofish)",
+ .base.cra_driver_name = "ecb-twofish-avx",
.base.cra_priority = 400,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
.base.cra_blocksize = TF_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct twofish_ctx),
.base.cra_module = THIS_MODULE,
@@ -253,10 +85,9 @@ static struct skcipher_alg twofish_algs[] = {
.encrypt = ecb_encrypt,
.decrypt = ecb_decrypt,
}, {
- .base.cra_name = "__cbc(twofish)",
- .base.cra_driver_name = "__cbc-twofish-avx",
+ .base.cra_name = "cbc(twofish)",
+ .base.cra_driver_name = "cbc-twofish-avx",
.base.cra_priority = 400,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
.base.cra_blocksize = TF_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct twofish_ctx),
.base.cra_module = THIS_MODULE,
@@ -266,40 +97,9 @@ static struct skcipher_alg twofish_algs[] = {
.setkey = twofish_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "__ctr(twofish)",
- .base.cra_driver_name = "__ctr-twofish-avx",
- .base.cra_priority = 400,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct twofish_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = TF_MIN_KEY_SIZE,
- .max_keysize = TF_MAX_KEY_SIZE,
- .ivsize = TF_BLOCK_SIZE,
- .chunksize = TF_BLOCK_SIZE,
- .setkey = twofish_setkey_skcipher,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
- }, {
- .base.cra_name = "__xts(twofish)",
- .base.cra_driver_name = "__xts-twofish-avx",
- .base.cra_priority = 400,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = TF_BLOCK_SIZE,
- .base.cra_ctxsize = sizeof(struct twofish_xts_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = 2 * TF_MIN_KEY_SIZE,
- .max_keysize = 2 * TF_MAX_KEY_SIZE,
- .ivsize = TF_BLOCK_SIZE,
- .setkey = xts_twofish_setkey,
- .encrypt = xts_encrypt,
- .decrypt = xts_decrypt,
},
};
-static struct simd_skcipher_alg *twofish_simd_algs[ARRAY_SIZE(twofish_algs)];
-
static int __init twofish_init(void)
{
const char *feature_name;
@@ -309,15 +109,13 @@ static int __init twofish_init(void)
return -ENODEV;
}
- return simd_register_skciphers_compat(twofish_algs,
- ARRAY_SIZE(twofish_algs),
- twofish_simd_algs);
+ return crypto_register_skciphers(twofish_algs,
+ ARRAY_SIZE(twofish_algs));
}
static void __exit twofish_exit(void)
{
- simd_unregister_skciphers(twofish_algs, ARRAY_SIZE(twofish_algs),
- twofish_simd_algs);
+ crypto_unregister_skciphers(twofish_algs, ARRAY_SIZE(twofish_algs));
}
module_init(twofish_init);
generated by cgit (git 2.34.1) at 2025-12-25 18:49:39 +0000