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/* $OpenBSD: sm2.h,v 1.1.1.1 2021/08/18 16:04:32 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_SM2_H
#define HEADER_SM2_H
#include <openssl/opensslconf.h>
#include <openssl/ec.h>
#include <openssl/ecdsa.h>
#ifdef OPENSSL_NO_SM2
#error SM2 is disabled.
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* SM2 signature generation.
*/
int SM2_sign(const unsigned char *dgst, int dgstlen, unsigned char *sig,
unsigned int *siglen, EC_KEY *eckey);
/*
* SM2 signature verification. Assumes input is an SM3 digest
*/
int SM2_verify(const unsigned char *dgst, int dgstlen, const unsigned char *sig,
int siglen, EC_KEY *eckey);
/*
* SM2 encryption
*/
int SM2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
size_t *c_size);
int SM2_plaintext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
size_t *pl_size);
int SM2_encrypt(const EC_KEY *key, const EVP_MD *digest, const uint8_t *msg,
size_t msg_len, uint8_t *ciphertext_buf, size_t *ciphertext_len);
int SM2_decrypt(const EC_KEY *key, const EVP_MD *digest,
const uint8_t *ciphertext, size_t ciphertext_len, uint8_t *ptext_buf,
size_t *ptext_len);
/* BEGIN ERROR CODES */
/* The following lines are auto generated by the script mkerr.pl. Any changes
* made after this point may be overwritten when the script is next run.
*/
void ERR_load_SM2_strings(void);
/* Error codes for the SM2 functions. */
/* Function codes. */
# define SM2_F_PKEY_SM2_CTRL 274
# define SM2_F_PKEY_SM2_CTRL_STR 275
# define SM2_F_PKEY_SM2_KEYGEN 276
# define SM2_F_PKEY_SM2_PARAMGEN 277
# define SM2_F_PKEY_SM2_SIGN 278
# define SM2_F_PKEY_SM2_VERIFY 279
# define SM2_F_PKEY_SM2_ENCRYPT 280
# define SM2_F_PKEY_SM2_DECRYPT 281
/* Reason codes. */
# define SM2_R_ASN1_ERROR 115
# define SM2_R_ASN5_ERROR 1150
# define SM2_R_BAD_SIGNATURE 156
# define SM2_R_BIGNUM_OUT_OF_RANGE 144
# define SM2_R_BUFFER_TOO_SMALL 100
# define SM2_R_COORDINATES_OUT_OF_RANGE 146
# define SM2_R_CURVE_DOES_NOT_SUPPORT_ECDH 160
# define SM2_R_CURVE_DOES_NOT_SUPPORT_SIGNING 159
# define SM2_R_D2I_ECPKPARAMETERS_FAILURE 117
# define SM2_R_DECODE_ERROR 142
# define SM2_R_DIGEST_FAILURE 163
# define SM2_R_DISCRIMINANT_IS_ZERO 118
# define SM2_R_EC_GROUP_NEW_BY_NAME_FAILURE 119
# define SM2_R_FIELD_TOO_LARGE 143
# define SM2_R_GF2M_NOT_SUPPORTED 147
# define SM2_R_GROUP2PKPARAMETERS_FAILURE 120
# define SM2_R_I2D_ECPKPARAMETERS_FAILURE 121
# define SM2_R_INCOMPATIBLE_OBJECTS 101
# define SM2_R_INVALID_ARGUMENT 112
# define SM2_R_INVALID_COMPRESSED_POINT 110
# define SM2_R_INVALID_COMPRESSION_BIT 109
# define SM2_R_INVALID_CURVE 141
# define SM2_R_INVALID_DIGEST 151
# define SM2_R_INVALID_DIGEST_TYPE 138
# define SM2_R_INVALID_ENCODING 102
# define SM2_R_INVALID_FIELD 103
# define SM2_R_INVALID_FORM 104
# define SM2_R_INVALID_GROUP_ORDER 122
# define SM2_R_INVALID_KEY 116
# define SM2_R_INVALID_OUTPUT_LENGTH 161
# define SM2_R_INVALID_PEER_KEY 133
# define SM2_R_INVALID_PENTANOMIAL_BASIS 132
# define SM2_R_INVALID_PRIVATE_KEY 123
# define SM2_R_INVALID_TRINOMIAL_BASIS 137
# define SM2_R_KDF_FAILURE 162
# define SM2_R_KDF_PARAMETER_ERROR 148
# define SM2_R_KEYS_NOT_SET 140
# define SM2_R_MISSING_PARAMETERS 124
# define SM2_R_MISSING_PRIVATE_KEY 125
# define SM2_R_NEED_NEW_SETUP_VALUES 157
# define SM2_R_NOT_A_NIST_PRIME 135
# define SM2_R_NOT_IMPLEMENTED 126
# define SM2_R_NOT_INITIALIZED 111
# define SM2_R_NO_PARAMETERS_SET 139
# define SM2_R_NO_PRIVATE_VALUE 154
# define SM2_R_OPERATION_NOT_SUPPORTED 152
# define SM2_R_PASSED_NULL_PARAMETER 134
# define SM2_R_PEER_KEY_ERROR 149
# define SM2_R_PKPARAMETERS2GROUP_FAILURE 127
# define SM2_R_POINT_ARITHMETIC_FAILURE 155
# define SM2_R_POINT_AT_INFINITY 106
# define SM2_R_POINT_IS_NOT_ON_CURVE 107
# define SM2_R_RANDOM_NUMBER_GENERATION_FAILED 158
# define SM2_R_SHARED_INFO_ERROR 150
# define SM2_R_SLOT_FULL 108
# define SM2_R_UNDEFINED_GENERATOR 113
# define SM2_R_UNDEFINED_ORDER 128
# define SM2_R_UNKNOWN_GROUP 129
# define SM2_R_UNKNOWN_ORDER 114
# define SM2_R_UNSUPPORTED_FIELD 131
# define SM2_R_WRONG_CURVE_PARAMETERS 145
# define SM2_R_WRONG_ORDER 130
#ifdef __cplusplus
}
#endif
#endif
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