mirror of
https://github.com/guanzhi/GmSSL.git
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260 lines
9.4 KiB
C
Executable File
260 lines
9.4 KiB
C
Executable File
/* ====================================================================
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* Copyright (c) 2015 - 2016 The GmSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the GmSSL Project.
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* (http://gmssl.org/)"
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*
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* 4. The name "GmSSL Project" must not be used to endorse or promote
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* products derived from this software without prior written
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* permission. For written permission, please contact
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* guanzhi1980@gmail.com.
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*
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* 5. Products derived from this software may not be called "GmSSL"
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* nor may "GmSSL" appear in their names without prior written
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* permission of the GmSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the GmSSL Project
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* (http://gmssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*/
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#ifndef HEADER_SM2_H
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#define HEADER_SM2_H
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#include <openssl/ec.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/kdf2.h>
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#include <openssl/x509.h>
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#include <openssl/asn1.h>
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#include <openssl/ecies.h>
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#include <openssl/sm3.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SM2_MAX_ID_BITS 65535
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#define SM2_MAX_ID_LENGTH (SM2_MAX_ID_BITS/8)
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#define SM2_DEFAULT_ID_GMT09 "1234567812345678"
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#define SM2_DEFAULT_ID_GMSSL "anonym@gmssl.org"
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#define SM2_DEFAULT_ID SM2_DEFAULT_ID_GMSSL
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#define SM2_DEFAULT_ID_LENGTH (sizeof(SM2_DEFAULT_ID) - 1)
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#define SM2_DEFAULT_ID_BITS (SM2_DEFAULT_ID_LENGTH * 8)
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#define SM2_ID_DIGEST_LENGTH SM3_DIGEST_LENGTH
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#define SM2_DEFAULT_POINT_CONVERSION_FORM POINT_CONVERSION_UNCOMPRESSED
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#define SM2_MAX_PKEY_DATA_LENGTH ((EC_MAX_NBYTES + 1) * 6)
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int SM2_get_public_key_data(EC_KEY *ec_key, unsigned char *out, size_t *outlen);
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int SM2_compute_id_digest(const EVP_MD *md, const char *id, size_t idlen,
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unsigned char *out, size_t *outlen, EC_KEY *ec_key);
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/*
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* Generate GM/T 0003.2-2012 message digest for SM2 signature scheme.
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* Return dgst = msg_md( id_md(id, ec_key) || msg )
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*/
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int SM2_compute_message_digest(const EVP_MD *id_md, const EVP_MD *msg_md,
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const unsigned char *msg, size_t msglen, const char *id, size_t idlen,
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unsigned char *out, size_t *outlen,
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EC_KEY *ec_key);
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typedef struct sm2_enc_params_st {
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const EVP_MD *kdf_md;
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const EVP_MD *mac_md;
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point_conversion_form_t point_form;
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} SM2_ENC_PARAMS;
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/* SM2_ENC_PARAMS_dup() is used by ec_pmeth.c,
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* so the SM2_ENC_PARAMS_new() and SM2_ENC_PARAMS_free() is also provided
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*/
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SM2_ENC_PARAMS *SM2_ENC_PARAMS_new(void);
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SM2_ENC_PARAMS *SM2_ENC_PARAMS_dup(const SM2_ENC_PARAMS *param);
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void SM2_ENC_PARAMS_free(SM2_ENC_PARAMS *param);
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int SM2_ENC_PARAMS_init_with_recommended(SM2_ENC_PARAMS *param);
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typedef struct sm2_ciphertext_value_st {
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EC_POINT *ephem_point;
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unsigned char *ciphertext;
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size_t ciphertext_size;
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unsigned char mactag[EVP_MAX_MD_SIZE];
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unsigned int mactag_size;
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} SM2_CIPHERTEXT_VALUE;
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int SM2_CIPHERTEXT_VALUE_size(const EC_GROUP *ec_group,
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const SM2_ENC_PARAMS *params, size_t mlen);
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SM2_CIPHERTEXT_VALUE *SM2_CIPHERTEXT_VALUE_new(const EC_GROUP *group);
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void SM2_CIPHERTEXT_VALUE_free(SM2_CIPHERTEXT_VALUE *cv);
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int SM2_CIPHERTEXT_VALUE_encode(const SM2_CIPHERTEXT_VALUE *cv,
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const EC_GROUP *ec_group, const SM2_ENC_PARAMS *params,
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unsigned char *buf, size_t *buflen);
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SM2_CIPHERTEXT_VALUE *SM2_CIPHERTEXT_VALUE_decode(const EC_GROUP *ec_group,
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const SM2_ENC_PARAMS *params, const unsigned char *buf, size_t buflen);
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int i2d_SM2_CIPHERTEXT_VALUE(const EC_GROUP *group,
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const SM2_CIPHERTEXT_VALUE *c, unsigned char **out);
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SM2_CIPHERTEXT_VALUE *d2i_SM2_CIPHERTEXT_VALUE(const EC_GROUP *group,
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SM2_CIPHERTEXT_VALUE **c, const unsigned char **in, long len);
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int SM2_CIPHERTEXT_VALUE_print(BIO *out, const EC_GROUP *ec_group,
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const SM2_CIPHERTEXT_VALUE *cv, int indent, unsigned long flags);
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SM2_CIPHERTEXT_VALUE *SM2_do_encrypt(const SM2_ENC_PARAMS *params,
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const unsigned char *in, size_t inlen, EC_KEY *ec_key);
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int SM2_do_decrypt(const SM2_ENC_PARAMS *params,
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const SM2_CIPHERTEXT_VALUE *in, unsigned char *out, size_t *outlen,
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EC_KEY *ec_key);
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int SM2_encrypt(const SM2_ENC_PARAMS *params,
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const unsigned char *in, size_t inlen,
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unsigned char *out, size_t *outlen,
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EC_KEY *ec_key);
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int SM2_decrypt(const SM2_ENC_PARAMS *params,
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const unsigned char *in, size_t inlen,
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unsigned char *out, size_t *outlen,
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EC_KEY *ec_key);
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int SM2_encrypt_with_recommended(const unsigned char *in, size_t inlen,
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unsigned char *out, size_t *outlen, EC_KEY *ec_key);
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int SM2_decrypt_with_recommended(const unsigned char *in, size_t inlen,
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unsigned char *out, size_t *outlen, EC_KEY *ec_key);
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int SM2_sign_setup(EC_KEY *ec_key, BN_CTX *ctx, BIGNUM **a, BIGNUM **b);
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ECDSA_SIG *SM2_do_sign_ex(const unsigned char *dgst, int dgstlen,
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const BIGNUM *a, const BIGNUM *b, EC_KEY *ec_key);
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ECDSA_SIG *SM2_do_sign(const unsigned char *dgst, int dgst_len,
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EC_KEY *ec_key);
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int SM2_do_verify(const unsigned char *dgst, int dgstlen,
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const ECDSA_SIG *sig, EC_KEY *ec_key);
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int SM2_sign_ex(int type, const unsigned char *dgst, int dgstlen,
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unsigned char *sig, unsigned int *siglen,
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const BIGNUM *k, const BIGNUM *x, EC_KEY *ec_key);
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int SM2_sign(int type, const unsigned char *dgst, int dgstlen,
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unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
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int SM2_verify(int type, const unsigned char *dgst, int dgstlen,
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const unsigned char *sig, int siglen, EC_KEY *ec_key);
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int SM2_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
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const EC_KEY *ec_key, void *(*KDF) (const void *in, size_t inlen, void *out, size_t *outlen));
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typedef struct sm2_kap_ctx_st {
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const EVP_MD *id_dgst_md;
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const EVP_MD *kdf_md;
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const EVP_MD *checksum_md;
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point_conversion_form_t point_form;
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KDF_FUNC kdf;
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int is_initiator;
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int do_checksum;
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EC_KEY *ec_key;
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unsigned char id_dgst[EVP_MAX_MD_SIZE];
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unsigned int id_dgstlen;
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EC_KEY *remote_pubkey;
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unsigned char remote_id_dgst[EVP_MAX_MD_SIZE];
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unsigned int remote_id_dgstlen;
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const EC_GROUP *group;
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BN_CTX *bn_ctx;
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BIGNUM *order;
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BIGNUM *two_pow_w;
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BIGNUM *t;
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EC_POINT *point;
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unsigned char pt_buf[1 + (OPENSSL_ECC_MAX_FIELD_BITS+7)/4];
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unsigned char checksum[EVP_MAX_MD_SIZE];
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} SM2_KAP_CTX;
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int SM2_KAP_CTX_init(SM2_KAP_CTX *ctx,
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EC_KEY *ec_key, const char *id, size_t idlen,
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EC_KEY *remote_pubkey, const char *rid, size_t ridlen,
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int is_initiator, int do_checksum);
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int SM2_KAP_prepare(SM2_KAP_CTX *ctx, unsigned char *ephem_point,
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size_t *ephem_point_len);
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int SM2_KAP_compute_key(SM2_KAP_CTX *ctx, const unsigned char *remote_ephem_point,
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size_t remote_ephem_point_len, unsigned char *key, size_t keylen,
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unsigned char *checksum, size_t *checksumlen);
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int SM2_KAP_final_check(SM2_KAP_CTX *ctx, const unsigned char *checksum,
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size_t checksumlen);
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void SM2_KAP_CTX_cleanup(SM2_KAP_CTX *ctx);
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const EC_KEY_METHOD *EC_KEY_GmSSL(void);
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void EC_KEY_set_default_secg_method(void);
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void EC_KEY_set_default_sm_method(void);
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int EC_KEY_METHOD_type(const EC_KEY_METHOD *meth);
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void EC_KEY_METHOD_set_encrypt(EC_KEY_METHOD *meth,
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int (*encrypt)(int type, const unsigned char *in, size_t inlen,
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unsigned char *out, size_t *outlen, EC_KEY *ec_key),
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ECIES_CIPHERTEXT_VALUE *(*do_encrypt)(int type,
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const unsigned char *in, size_t inlen, EC_KEY *ec_key));
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void EC_KEY_METHOD_set_decrypt(EC_KEY_METHOD *meth,
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int (*decrypt)(int type, const unsigned char *in, size_t inlen,
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unsigned char *out, size_t *outlen, EC_KEY *ec_key),
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int (do_decrypt)(int type, const ECIES_CIPHERTEXT_VALUE *in,
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unsigned char *out, size_t *outlen, EC_KEY *ec_key));
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void EC_KEY_METHOD_get_encrypt(EC_KEY_METHOD *meth,
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int (**pencrypt)(int type, const unsigned char *in, size_t inlen,
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unsigned char *out, size_t *outlen, EC_KEY *ec_key),
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ECIES_CIPHERTEXT_VALUE *(**pdo_encrypt)(int type,
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const unsigned char *in, size_t inlen, EC_KEY *ec_key));
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void EC_KEY_METHOD_get_decrypt(EC_KEY_METHOD *meth,
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int (**pdecrypt)(int type, const unsigned char *in, size_t inlen,
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unsigned char *out, size_t *outlen, EC_KEY *ec_key),
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int (**pdo_decrypt)(int type, const ECIES_CIPHERTEXT_VALUE *in,
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unsigned char *out, size_t *outlen, EC_KEY *ec_key));
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#ifdef __cplusplus
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}
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#endif
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#endif
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