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