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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849/* SPDX-License-Identifier: GPL-2.0 */
/* * Common values for the SM4 algorithm * Copyright (C) 2018 ARM Limited or its affiliates. * Copyright (c) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com> */
#ifndef _CRYPTO_SM4_H#define _CRYPTO_SM4_H
#include <linux/types.h>#include <linux/crypto.h>
#define SM4_KEY_SIZE 16#define SM4_BLOCK_SIZE 16#define SM4_RKEY_WORDS 32
struct sm4_ctx { u32 rkey_enc[SM4_RKEY_WORDS]; u32 rkey_dec[SM4_RKEY_WORDS];};
extern const u32 crypto_sm4_fk[];extern const u32 crypto_sm4_ck[];extern const u8 crypto_sm4_sbox[];
/** * sm4_expandkey - Expands the SM4 key as described in GB/T 32907-2016 * @ctx: The location where the computed key will be stored. * @in_key: The supplied key. * @key_len: The length of the supplied key. * * Returns 0 on success. The function fails only if an invalid key size (or * pointer) is supplied. */int sm4_expandkey(struct sm4_ctx *ctx, const u8 *in_key, unsigned int key_len);
/** * sm4_crypt_block - Encrypt or decrypt a single SM4 block * @rk: The rkey_enc for encrypt or rkey_dec for decrypt * @out: Buffer to store output data * @in: Buffer containing the input data */void sm4_crypt_block(const u32 *rk, u8 *out, const u8 *in);
#endif