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108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/*
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* Copyright (c) 2015 - 2017 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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#define EC_KEY_METHOD_SM2 0x02
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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_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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struct SM2CiphertextValue_st {
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BIGNUM *xCoordinate;
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BIGNUM *yCoordinate;
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ASN1_OCTET_STRING *hash;
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ASN1_OCTET_STRING *ciphertext;
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};
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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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};
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int i2o_SM2CiphertextValue(const EC_GROUP *group, const SM2CiphertextValue *cv,
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unsigned char **pout);
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SM2CiphertextValue *o2i_SM2CiphertextValue(const EC_GROUP *group,
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SM2CiphertextValue **cv, const unsigned char **pin, long len);
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