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/* $OpenBSD: sm4.h,v 1.1 2019/03/17 17:42:37 tb Exp $ */
/*
* Copyright (c) 2017, 2019 Ribose Inc
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef HEADER_SM4_H
#define HEADER_SM4_H
#include <stdint.h>
#include <openssl/opensslconf.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef OPENSSL_NO_SM4
#error SM4 is disabled.
#endif
#define SM4_DECRYPT 0
#define SM4_ENCRYPT 1
#define SM4_BLOCK_SIZE 16
#define SM4_KEY_SCHEDULE 32
typedef struct sm4_key_st {
unsigned char opaque[128];
} SM4_KEY;
int SM4_set_key(const uint8_t *key, SM4_KEY *ks);
void SM4_decrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks);
void SM4_encrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks);
#ifdef __cplusplus
}
#endif
#endif /* HEADER_SM4_H */
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