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