diff options
Diffstat (limited to 'arch/x86/crypto/sm4_aesni_avx2_glue.c')
| -rw-r--r-- | arch/x86/crypto/sm4_aesni_avx2_glue.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/arch/x86/crypto/sm4_aesni_avx2_glue.c b/arch/x86/crypto/sm4_aesni_avx2_glue.c new file mode 100644 index 000000000..84bc718f4 --- /dev/null +++ b/arch/x86/crypto/sm4_aesni_avx2_glue.c @@ -0,0 +1,169 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * SM4 Cipher Algorithm, AES-NI/AVX2 optimized. + * as specified in + * https://tools.ietf.org/id/draft-ribose-cfrg-sm4-10.html + * + * Copyright (c) 2021, Alibaba Group. + * Copyright (c) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com> + */ + +#include <linux/module.h> +#include <linux/crypto.h> +#include <linux/kernel.h> +#include <asm/simd.h> +#include <crypto/internal/simd.h> +#include <crypto/internal/skcipher.h> +#include <crypto/sm4.h> +#include "sm4-avx.h" + +#define SM4_CRYPT16_BLOCK_SIZE (SM4_BLOCK_SIZE * 16) + +asmlinkage void sm4_aesni_avx2_ctr_enc_blk16(const u32 *rk, u8 *dst, + const u8 *src, u8 *iv); +asmlinkage void sm4_aesni_avx2_cbc_dec_blk16(const u32 *rk, u8 *dst, + const u8 *src, u8 *iv); +asmlinkage void sm4_aesni_avx2_cfb_dec_blk16(const u32 *rk, u8 *dst, + const u8 *src, u8 *iv); + +static int sm4_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key, + unsigned int key_len) +{ + struct sm4_ctx *ctx = crypto_skcipher_ctx(tfm); + + return sm4_expandkey(ctx, key, key_len); +} + +static int cbc_decrypt(struct skcipher_request *req) +{ + return sm4_avx_cbc_decrypt(req, SM4_CRYPT16_BLOCK_SIZE, + sm4_aesni_avx2_cbc_dec_blk16); +} + + +static int cfb_decrypt(struct skcipher_request *req) +{ + return sm4_avx_cfb_decrypt(req, SM4_CRYPT16_BLOCK_SIZE, + sm4_aesni_avx2_cfb_dec_blk16); +} + +static int ctr_crypt(struct skcipher_request *req) +{ + return sm4_avx_ctr_crypt(req, SM4_CRYPT16_BLOCK_SIZE, + sm4_aesni_avx2_ctr_enc_blk16); +} + +static struct skcipher_alg sm4_aesni_avx2_skciphers[] = { + { + .base = { + .cra_name = "__ecb(sm4)", + .cra_driver_name = "__ecb-sm4-aesni-avx2", + .cra_priority = 500, + .cra_flags = CRYPTO_ALG_INTERNAL, + .cra_blocksize = SM4_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sm4_ctx), + .cra_module = THIS_MODULE, + }, + .min_keysize = SM4_KEY_SIZE, + .max_keysize = SM4_KEY_SIZE, + .walksize = 16 * SM4_BLOCK_SIZE, + .setkey = sm4_skcipher_setkey, + .encrypt = sm4_avx_ecb_encrypt, + .decrypt = sm4_avx_ecb_decrypt, + }, { + .base = { + .cra_name = "__cbc(sm4)", + .cra_driver_name = "__cbc-sm4-aesni-avx2", + .cra_priority = 500, + .cra_flags = CRYPTO_ALG_INTERNAL, + .cra_blocksize = SM4_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sm4_ctx), + .cra_module = THIS_MODULE, + }, + .min_keysize = SM4_KEY_SIZE, + .max_keysize = SM4_KEY_SIZE, + .ivsize = SM4_BLOCK_SIZE, + .walksize = 16 * SM4_BLOCK_SIZE, + .setkey = sm4_skcipher_setkey, + .encrypt = sm4_cbc_encrypt, + .decrypt = cbc_decrypt, + }, { + .base = { + .cra_name = "__cfb(sm4)", + .cra_driver_name = "__cfb-sm4-aesni-avx2", + .cra_priority = 500, + .cra_flags = CRYPTO_ALG_INTERNAL, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct sm4_ctx), + .cra_module = THIS_MODULE, + }, + .min_keysize = SM4_KEY_SIZE, + .max_keysize = SM4_KEY_SIZE, + .ivsize = SM4_BLOCK_SIZE, + .chunksize = SM4_BLOCK_SIZE, + .walksize = 16 * SM4_BLOCK_SIZE, + .setkey = sm4_skcipher_setkey, + .encrypt = sm4_cfb_encrypt, + .decrypt = cfb_decrypt, + }, { + .base = { + .cra_name = "__ctr(sm4)", + .cra_driver_name = "__ctr-sm4-aesni-avx2", + .cra_priority = 500, + .cra_flags = CRYPTO_ALG_INTERNAL, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct sm4_ctx), + .cra_module = THIS_MODULE, + }, + .min_keysize = SM4_KEY_SIZE, + .max_keysize = SM4_KEY_SIZE, + .ivsize = SM4_BLOCK_SIZE, + .chunksize = SM4_BLOCK_SIZE, + .walksize = 16 * SM4_BLOCK_SIZE, + .setkey = sm4_skcipher_setkey, + .encrypt = ctr_crypt, + .decrypt = ctr_crypt, + } +}; + +static struct simd_skcipher_alg * +simd_sm4_aesni_avx2_skciphers[ARRAY_SIZE(sm4_aesni_avx2_skciphers)]; + +static int __init sm4_init(void) +{ + const char *feature_name; + + if (!boot_cpu_has(X86_FEATURE_AVX) || + !boot_cpu_has(X86_FEATURE_AVX2) || + !boot_cpu_has(X86_FEATURE_AES) || + !boot_cpu_has(X86_FEATURE_OSXSAVE)) { + pr_info("AVX2 or AES-NI 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 simd_register_skciphers_compat(sm4_aesni_avx2_skciphers, + ARRAY_SIZE(sm4_aesni_avx2_skciphers), + simd_sm4_aesni_avx2_skciphers); +} + +static void __exit sm4_exit(void) +{ + simd_unregister_skciphers(sm4_aesni_avx2_skciphers, + ARRAY_SIZE(sm4_aesni_avx2_skciphers), + simd_sm4_aesni_avx2_skciphers); +} + +module_init(sm4_init); +module_exit(sm4_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Tianjia Zhang <tianjia.zhang@linux.alibaba.com>"); +MODULE_DESCRIPTION("SM4 Cipher Algorithm, AES-NI/AVX2 optimized"); +MODULE_ALIAS_CRYPTO("sm4"); +MODULE_ALIAS_CRYPTO("sm4-aesni-avx2"); |