mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-04 09:34:12 +08:00
c59de48e12
SM4 library is abstracted from sm4-generic algorithm, sm4-ce can depend on the SM4 library instead of sm4-generic, and some functions in sm4-generic do not need to be exported. Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/* 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];
|
|
};
|
|
|
|
/**
|
|
* 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
|