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 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 #  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_userid_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 ZA (user id digest) and then signs
  31  * H(ZA || msg) using SM2
  32  */
  33 ECDSA_SIG *sm2_do_sign(const EC_KEY *key,
  34                        const EVP_MD *digest,
  35                        const uint8_t *id,
  36                        const size_t id_len,
  37                        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 uint8_t *id,
  43                   const size_t id_len,
  44                   const uint8_t *msg, size_t msg_len);
  45
  46 /*
  47  * SM2 signature generation.
  48  */
  49 int sm2_sign(const unsigned char *dgst, int dgstlen,
  50              unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
  51
  52 /*
  53  * SM2 signature verification.
  54  */
  55 int sm2_verify(const unsigned char *dgst, int dgstlen,
  56                const unsigned char *sig, int siglen, EC_KEY *eckey);
  57
  58 /*
  59  * SM2 encryption
  60  */
  61 int sm2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
  62                         size_t *ct_size);
  63
  64 int sm2_plaintext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
  65                        size_t *pt_size);
  66
  67 int sm2_encrypt(const EC_KEY *key,
  68                 const EVP_MD *digest,
  69                 const uint8_t *msg,
  70                 size_t msg_len,
  71                 uint8_t *ciphertext_buf, size_t *ciphertext_len);
  72
  73 int sm2_decrypt(const EC_KEY *key,
  74                 const EVP_MD *digest,
  75                 const uint8_t *ciphertext,
  76                 size_t ciphertext_len, uint8_t *ptext_buf, size_t *ptext_len);
  77
  78 # endif /* OPENSSL_NO_SM2 */
  79 #endif