1/* SPDX-License-Identifier: GPL-2.0 */
 2
 3/*
 4 * Common values for the SM4 algorithm
 5 * Copyright (C) 2018 ARM Limited or its affiliates.
 6 */
 7
 8#ifndef _CRYPTO_SM4_H
 9#define _CRYPTO_SM4_H
10
11#include <linux/types.h>
12#include <linux/crypto.h>
13
14#define SM4_KEY_SIZE	16
15#define SM4_BLOCK_SIZE	16
16#define SM4_RKEY_WORDS	32
17
18struct crypto_sm4_ctx {
19	u32 rkey_enc[SM4_RKEY_WORDS];
20	u32 rkey_dec[SM4_RKEY_WORDS];
21};
22
23int crypto_sm4_set_key(struct crypto_tfm *tfm, const u8 *in_key,
24		       unsigned int key_len);
25int crypto_sm4_expand_key(struct crypto_sm4_ctx *ctx, const u8 *in_key,
26			  unsigned int key_len);
27
28void crypto_sm4_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
29void crypto_sm4_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
30
31#endif