include/openssl/sm2.h

   1 /*
   2  * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
   3  * Copyright 2017 Ribose Inc. All Rights Reserved.
   4  * Ported from Ribose contributions from Botan.
   5  *
   6  * Licensed under the OpenSSL license (the "License").  You may not use
   7  * this file except in compliance with the License.  You can obtain a copy
   8  * in the file LICENSE in the source distribution or at
   9  * https://www.openssl.org/source/license.html
  10  */
  11
  12 #ifndef HEADER_SM2_H
  13 # define HEADER_SM2_H
  14
  15 # include <openssl/ec.h>
  16
  17 /* The default user id as specified in GM/T 0009-2012 */
  18 # define SM2_DEFAULT_USERID "1234567812345678"
  19
  20 int SM2_compute_userid_digest(uint8_t *out,
  21                               const EVP_MD *digest,
  22                               const char *user_id, const EC_KEY *key);
  23
  24 /*
  25  * SM2 signature operation. Computes ZA (user id digest) and then signs
  26  * H(ZA || msg) using SM2
  27  */
  28 ECDSA_SIG *SM2_do_sign(const EC_KEY *key,
  29                        const EVP_MD *digest,
  30                        const char *user_id, const uint8_t *msg, size_t msg_len);
  31
  32 int SM2_do_verify(const EC_KEY *key,
  33                   const EVP_MD *digest,
  34                   const ECDSA_SIG *signature,
  35                   const char *user_id, const uint8_t *msg, size_t msg_len);
  36
  37 /*
  38  * SM2 signature generation. Assumes input is an SM3 digest
  39  */
  40 int SM2_sign(int type, const unsigned char *dgst, int dgstlen,
  41              unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
  42
  43 /*
  44  * SM2 signature verification. Assumes input is an SM3 digest
  45  */
  46 int SM2_verify(int type, const unsigned char *dgst, int dgstlen,
  47                const unsigned char *sig, int siglen, EC_KEY *eckey);
  48
  49
  50 /*
  51  * SM2 encryption
  52  */
  53 size_t SM2_ciphertext_size(const EC_KEY *key,
  54                            const EVP_MD *digest,
  55                            size_t msg_len);
  56
  57 int SM2_encrypt(const EC_KEY *key,
  58                 const EVP_MD *digest,
  59                 const uint8_t *msg,
  60                 size_t msg_len,
  61                 uint8_t *ciphertext_buf, size_t *ciphertext_len);
  62
  63 int SM2_decrypt(const EC_KEY *key,
  64                 const EVP_MD *digest,
  65                 const uint8_t *ciphertext,
  66                 size_t ciphertext_len, uint8_t *ptext_buf, size_t *ptext_len);
  67
  68 int ERR_load_SM2_strings(void);
  69
  70 #endif