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 18 struct crypto_sm4_ctx { 19 u32 rkey_enc[SM4_RKEY_WORDS]; 20 u32 rkey_dec[SM4_RKEY_WORDS]; 21 }; 22 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); 27 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); 30 31 #endif 32