include/openssl/sm2.h

   1 /*
   2  * Copyright 2017-2018 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 # include <openssl/opensslconf.h>
  15
  16 # ifndef OPENSSL_NO_SM2
  17
  18 #  ifdef __cplusplus
  19 extern "C" {
  20 #  endif
  21
  22 #  include <openssl/ec.h>
  23
  24 /* The default user id as specified in GM/T 0009-2012 */
  25 #  define SM2_DEFAULT_USERID "1234567812345678"
  26
  27 int SM2_compute_userid_digest(uint8_t *out,
  28                               const EVP_MD *digest,
  29                               const char *user_id, const EC_KEY *key);
  30
  31 /*
  32  * SM2 signature operation. Computes ZA (user id digest) and then signs
  33  * H(ZA || msg) using SM2
  34  */
  35 ECDSA_SIG *SM2_do_sign(const EC_KEY *key,
  36                        const EVP_MD *digest,
  37                        const char *user_id, const uint8_t *msg, size_t msg_len);
  38
  39 int SM2_do_verify(const EC_KEY *key,
  40                   const EVP_MD *digest,
  41                   const ECDSA_SIG *signature,
  42                   const char *user_id, const uint8_t *msg, size_t msg_len);
  43
  44 /*
  45  * SM2 signature generation. Assumes input is an SM3 digest
  46  */
  47 int SM2_sign(int type, const unsigned char *dgst, int dgstlen,
  48              unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
  49
  50 /*
  51  * SM2 signature verification. Assumes input is an SM3 digest
  52  */
  53 int SM2_verify(int type, const unsigned char *dgst, int dgstlen,
  54                const unsigned char *sig, int siglen, EC_KEY *eckey);
  55
  56
  57 /*
  58  * SM2 encryption
  59  */
  60 size_t SM2_ciphertext_size(const EC_KEY *key,
  61                            const EVP_MD *digest,
  62                            size_t msg_len);
  63
  64 size_t SM2_plaintext_size(const EC_KEY *key,
  65                           const EVP_MD *digest,
  66                           size_t msg_len);
  67
  68 int SM2_encrypt(const EC_KEY *key,
  69                 const EVP_MD *digest,
  70                 const uint8_t *msg,
  71                 size_t msg_len,
  72                 uint8_t *ciphertext_buf, size_t *ciphertext_len);
  73
  74 int SM2_decrypt(const EC_KEY *key,
  75                 const EVP_MD *digest,
  76                 const uint8_t *ciphertext,
  77                 size_t ciphertext_len, uint8_t *ptext_buf, size_t *ptext_len);
  78
  79 int ERR_load_SM2_strings(void);
  80
  81 #  ifdef __cplusplus
  82 }
  83 #  endif
  84
  85 # endif /* OPENSSL_NO_SM2 */
  86 #endif