From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- arch/x86/crypto/serpent_avx_glue.c | 326 +++++++++++++++++++++++++++++++++++++ 1 file changed, 326 insertions(+) create mode 100644 arch/x86/crypto/serpent_avx_glue.c (limited to 'arch/x86/crypto/serpent_avx_glue.c') diff --git a/arch/x86/crypto/serpent_avx_glue.c b/arch/x86/crypto/serpent_avx_glue.c new file mode 100644 index 000000000..458567ecf --- /dev/null +++ b/arch/x86/crypto/serpent_avx_glue.c @@ -0,0 +1,326 @@ +/* + * Glue Code for AVX assembler versions of Serpent Cipher + * + * Copyright (C) 2012 Johannes Goetzfried + * + * + * Copyright © 2011-2013 Jussi Kivilinna + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* 8-way parallel cipher functions */ +asmlinkage void serpent_ecb_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst, + const u8 *src); +EXPORT_SYMBOL_GPL(serpent_ecb_enc_8way_avx); + +asmlinkage void serpent_ecb_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst, + const u8 *src); +EXPORT_SYMBOL_GPL(serpent_ecb_dec_8way_avx); + +asmlinkage void serpent_cbc_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst, + const u8 *src); +EXPORT_SYMBOL_GPL(serpent_cbc_dec_8way_avx); + +asmlinkage void serpent_ctr_8way_avx(struct serpent_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); +EXPORT_SYMBOL_GPL(serpent_ctr_8way_avx); + +asmlinkage void serpent_xts_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); +EXPORT_SYMBOL_GPL(serpent_xts_enc_8way_avx); + +asmlinkage void serpent_xts_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); +EXPORT_SYMBOL_GPL(serpent_xts_dec_8way_avx); + +void __serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src, le128 *iv) +{ + be128 ctrblk; + + le128_to_be128(&ctrblk, iv); + le128_inc(iv); + + __serpent_encrypt(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk); + u128_xor(dst, src, (u128 *)&ctrblk); +} +EXPORT_SYMBOL_GPL(__serpent_crypt_ctr); + +void serpent_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv) +{ + glue_xts_crypt_128bit_one(ctx, dst, src, iv, + GLUE_FUNC_CAST(__serpent_encrypt)); +} +EXPORT_SYMBOL_GPL(serpent_xts_enc); + +void serpent_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv) +{ + glue_xts_crypt_128bit_one(ctx, dst, src, iv, + GLUE_FUNC_CAST(__serpent_decrypt)); +} +EXPORT_SYMBOL_GPL(serpent_xts_dec); + +static int serpent_setkey_skcipher(struct crypto_skcipher *tfm, + const u8 *key, unsigned int keylen) +{ + return __serpent_setkey(crypto_skcipher_ctx(tfm), key, keylen); +} + +int xts_serpent_setkey(struct crypto_skcipher *tfm, const u8 *key, + unsigned int keylen) +{ + struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm); + int err; + + err = xts_verify_key(tfm, key, keylen); + if (err) + return err; + + /* first half of xts-key is for crypt */ + err = __serpent_setkey(&ctx->crypt_ctx, key, keylen / 2); + if (err) + return err; + + /* second half of xts-key is for tweak */ + return __serpent_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2); +} +EXPORT_SYMBOL_GPL(xts_serpent_setkey); + +static const struct common_glue_ctx serpent_enc = { + .num_funcs = 2, + .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, + + .funcs = { { + .num_blocks = SERPENT_PARALLEL_BLOCKS, + .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_enc_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_encrypt) } + } } +}; + +static const struct common_glue_ctx serpent_ctr = { + .num_funcs = 2, + .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, + + .funcs = { { + .num_blocks = SERPENT_PARALLEL_BLOCKS, + .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(__serpent_crypt_ctr) } + } } +}; + +static const struct common_glue_ctx serpent_enc_xts = { + .num_funcs = 2, + .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, + + .funcs = { { + .num_blocks = SERPENT_PARALLEL_BLOCKS, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc) } + } } +}; + +static const struct common_glue_ctx serpent_dec = { + .num_funcs = 2, + .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, + + .funcs = { { + .num_blocks = SERPENT_PARALLEL_BLOCKS, + .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_dec_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_decrypt) } + } } +}; + +static const struct common_glue_ctx serpent_dec_cbc = { + .num_funcs = 2, + .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, + + .funcs = { { + .num_blocks = SERPENT_PARALLEL_BLOCKS, + .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_cbc_dec_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(__serpent_decrypt) } + } } +}; + +static const struct common_glue_ctx serpent_dec_xts = { + .num_funcs = 2, + .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, + + .funcs = { { + .num_blocks = SERPENT_PARALLEL_BLOCKS, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec) } + } } +}; + +static int ecb_encrypt(struct skcipher_request *req) +{ + return glue_ecb_req_128bit(&serpent_enc, req); +} + +static int ecb_decrypt(struct skcipher_request *req) +{ + return glue_ecb_req_128bit(&serpent_dec, req); +} + +static int cbc_encrypt(struct skcipher_request *req) +{ + return glue_cbc_encrypt_req_128bit(GLUE_FUNC_CAST(__serpent_encrypt), + req); +} + +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 int xts_encrypt(struct skcipher_request *req) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm); + + return glue_xts_req_128bit(&serpent_enc_xts, req, + XTS_TWEAK_CAST(__serpent_encrypt), + &ctx->tweak_ctx, &ctx->crypt_ctx); +} + +static int xts_decrypt(struct skcipher_request *req) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm); + + return glue_xts_req_128bit(&serpent_dec_xts, req, + XTS_TWEAK_CAST(__serpent_encrypt), + &ctx->tweak_ctx, &ctx->crypt_ctx); +} + +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, + }, { + .base.cra_name = "__ctr(serpent)", + .base.cra_driver_name = "__ctr-serpent-avx", + .base.cra_priority = 500, + .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, + }, { + .base.cra_name = "__xts(serpent)", + .base.cra_driver_name = "__xts-serpent-avx", + .base.cra_priority = 500, + .base.cra_flags = CRYPTO_ALG_INTERNAL, + .base.cra_blocksize = SERPENT_BLOCK_SIZE, + .base.cra_ctxsize = sizeof(struct serpent_xts_ctx), + .base.cra_module = THIS_MODULE, + .min_keysize = 2 * SERPENT_MIN_KEY_SIZE, + .max_keysize = 2 * SERPENT_MAX_KEY_SIZE, + .ivsize = SERPENT_BLOCK_SIZE, + .setkey = xts_serpent_setkey, + .encrypt = xts_encrypt, + .decrypt = xts_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"); -- cgit v1.2.3