crypto/include/internal/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 Apache License 2.0 (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 #  include <openssl/ec.h>
  19
  20 /* The default user id as specified in GM/T 0009-2012 */
  21 #  define SM2_DEFAULT_USERID "1234567812345678"
  22
  23 int sm2_compute_z_digest(uint8_t *out,
  24                          const EVP_MD *digest,
  25                          const uint8_t *id,
  26                          const size_t id_len,
  27                          const EC_KEY *key);
  28
  29 /*
  30  * SM2 signature operation. Computes Z and then signs H(Z || msg) using SM2
  31  */
  32 ECDSA_SIG *sm2_do_sign(const EC_KEY *key,
  33                        const EVP_MD *digest,
  34                        const uint8_t *id,
  35                        const size_t id_len,
  36                        const uint8_t *msg, size_t msg_len);
  37
  38 int sm2_do_verify(const EC_KEY *key,
  39                   const EVP_MD *digest,
  40                   const ECDSA_SIG *signature,
  41                   const uint8_t *id,
  42                   const size_t id_len,
  43                   const uint8_t *msg, size_t msg_len);
  44
  45 /*
  46  * SM2 signature generation.
  47  */
  48 int sm2_sign(const unsigned char *dgst, int dgstlen,
  49              unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
  50
  51 /*
  52  * SM2 signature verification.
  53  */
  54 int sm2_verify(const unsigned char *dgst, int dgstlen,
  55                const unsigned char *sig, int siglen, EC_KEY *eckey);
  56
  57 /*
  58  * SM2 encryption
  59  */
  60 int sm2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
  61                         size_t *ct_size);
  62
  63 int sm2_plaintext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
  64                        size_t *pt_size);
  65
  66 int sm2_encrypt(const EC_KEY *key,
  67                 const EVP_MD *digest,
  68                 const uint8_t *msg,
  69                 size_t msg_len,
  70                 uint8_t *ciphertext_buf, size_t *ciphertext_len);
  71
  72 int sm2_decrypt(const EC_KEY *key,
  73                 const EVP_MD *digest,
  74                 const uint8_t *ciphertext,
  75                 size_t ciphertext_len, uint8_t *ptext_buf, size_t *ptext_len);
  76
  77 # endif /* OPENSSL_NO_SM2 */
  78 #endif