1 /* $OpenBSD: sm2.h,v 1.4 2025/01/25 17:59:44 tb Exp $ */ 2 /* 3 * Copyright (c) 2017, 2019 Ribose Inc 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #ifndef HEADER_SM2_H 19 #define HEADER_SM2_H 20 21 #include <openssl/opensslconf.h> 22 23 #include <openssl/ec.h> 24 25 #ifdef __cplusplus 26 extern "C" { 27 #endif 28 29 /* 30 * SM2 signature generation. 31 */ 32 int SM2_sign(const unsigned char *dgst, int dgstlen, unsigned char *sig, 33 unsigned int *siglen, EC_KEY *eckey); 34 35 /* 36 * SM2 signature verification. Assumes input is an SM3 digest 37 */ 38 int SM2_verify(const unsigned char *dgst, int dgstlen, const unsigned char *sig, 39 int siglen, EC_KEY *eckey); 40 41 /* 42 * SM2 encryption 43 */ 44 int SM2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len, 45 size_t *c_size); 46 47 int SM2_plaintext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len, 48 size_t *pl_size); 49 50 int SM2_encrypt(const EC_KEY *key, const EVP_MD *digest, const uint8_t *msg, 51 size_t msg_len, uint8_t *ciphertext_buf, size_t *ciphertext_len); 52 53 int SM2_decrypt(const EC_KEY *key, const EVP_MD *digest, 54 const uint8_t *ciphertext, size_t ciphertext_len, uint8_t *ptext_buf, 55 size_t *ptext_len); 56 57 void ERR_load_SM2_strings(void); 58 59 /* Error codes for the SM2 functions. */ 60 61 /* Function codes. */ 62 # define SM2_F_PKEY_SM2_CTRL 274 63 # define SM2_F_PKEY_SM2_CTRL_STR 275 64 # define SM2_F_PKEY_SM2_KEYGEN 276 65 # define SM2_F_PKEY_SM2_PARAMGEN 277 66 # define SM2_F_PKEY_SM2_SIGN 278 67 # define SM2_F_PKEY_SM2_VERIFY 279 68 # define SM2_F_PKEY_SM2_ENCRYPT 280 69 # define SM2_F_PKEY_SM2_DECRYPT 281 70 71 /* Reason codes. */ 72 # define SM2_R_ASN1_ERROR 115 73 # define SM2_R_ASN5_ERROR 1150 74 # define SM2_R_BAD_SIGNATURE 156 75 # define SM2_R_BIGNUM_OUT_OF_RANGE 144 76 # define SM2_R_BUFFER_TOO_SMALL 100 77 # define SM2_R_COORDINATES_OUT_OF_RANGE 146 78 # define SM2_R_CURVE_DOES_NOT_SUPPORT_ECDH 160 79 # define SM2_R_CURVE_DOES_NOT_SUPPORT_SIGNING 159 80 # define SM2_R_D2I_ECPKPARAMETERS_FAILURE 117 81 # define SM2_R_DECODE_ERROR 142 82 # define SM2_R_DIGEST_FAILURE 163 83 # define SM2_R_DISCRIMINANT_IS_ZERO 118 84 # define SM2_R_EC_GROUP_NEW_BY_NAME_FAILURE 119 85 # define SM2_R_FIELD_TOO_LARGE 143 86 # define SM2_R_GF2M_NOT_SUPPORTED 147 87 # define SM2_R_GROUP2PKPARAMETERS_FAILURE 120 88 # define SM2_R_I2D_ECPKPARAMETERS_FAILURE 121 89 # define SM2_R_INCOMPATIBLE_OBJECTS 101 90 # define SM2_R_INVALID_ARGUMENT 112 91 # define SM2_R_INVALID_COMPRESSED_POINT 110 92 # define SM2_R_INVALID_COMPRESSION_BIT 109 93 # define SM2_R_INVALID_CURVE 141 94 # define SM2_R_INVALID_DIGEST 151 95 # define SM2_R_INVALID_DIGEST_TYPE 138 96 # define SM2_R_INVALID_ENCODING 102 97 # define SM2_R_INVALID_FIELD 103 98 # define SM2_R_INVALID_FORM 104 99 # define SM2_R_INVALID_GROUP_ORDER 122 100 # define SM2_R_INVALID_KEY 116 101 # define SM2_R_INVALID_OUTPUT_LENGTH 161 102 # define SM2_R_INVALID_PEER_KEY 133 103 # define SM2_R_INVALID_PENTANOMIAL_BASIS 132 104 # define SM2_R_INVALID_PRIVATE_KEY 123 105 # define SM2_R_INVALID_TRINOMIAL_BASIS 137 106 # define SM2_R_KDF_FAILURE 162 107 # define SM2_R_KDF_PARAMETER_ERROR 148 108 # define SM2_R_KEYS_NOT_SET 140 109 # define SM2_R_MISSING_PARAMETERS 124 110 # define SM2_R_MISSING_PRIVATE_KEY 125 111 # define SM2_R_NEED_NEW_SETUP_VALUES 157 112 # define SM2_R_NOT_A_NIST_PRIME 135 113 # define SM2_R_NOT_IMPLEMENTED 126 114 # define SM2_R_NOT_INITIALIZED 111 115 # define SM2_R_NO_PARAMETERS_SET 139 116 # define SM2_R_NO_PRIVATE_VALUE 154 117 # define SM2_R_OPERATION_NOT_SUPPORTED 152 118 # define SM2_R_PASSED_NULL_PARAMETER 134 119 # define SM2_R_PEER_KEY_ERROR 149 120 # define SM2_R_PKPARAMETERS2GROUP_FAILURE 127 121 # define SM2_R_POINT_ARITHMETIC_FAILURE 155 122 # define SM2_R_POINT_AT_INFINITY 106 123 # define SM2_R_POINT_IS_NOT_ON_CURVE 107 124 # define SM2_R_RANDOM_NUMBER_GENERATION_FAILED 158 125 # define SM2_R_SHARED_INFO_ERROR 150 126 # define SM2_R_SLOT_FULL 108 127 # define SM2_R_UNDEFINED_GENERATOR 113 128 # define SM2_R_UNDEFINED_ORDER 128 129 # define SM2_R_UNKNOWN_GROUP 129 130 # define SM2_R_UNKNOWN_ORDER 114 131 # define SM2_R_UNSUPPORTED_FIELD 131 132 # define SM2_R_WRONG_CURVE_PARAMETERS 145 133 # define SM2_R_WRONG_ORDER 130 134 135 #ifdef __cplusplus 136 } 137 #endif 138 #endif 139