include/crypto/sm2.h

   1 /*
   2  * Copyright 2017-2020 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 OSSL_CRYPTO_SM2_H
  13 # define OSSL_CRYPTO_SM2_H
  14 # include <openssl/opensslconf.h>
  15
  16 # ifndef OPENSSL_NO_SM2
  17
  18 #  include <openssl/ec.h>
  19 #  include "crypto/types.h"
  20
  21 int sm2_key_private_check(const EC_KEY *eckey);
  22
  23 /* The default user id as specified in GM/T 0009-2012 */
  24 #  define SM2_DEFAULT_USERID "1234567812345678"
  25
  26 int sm2_compute_z_digest(uint8_t *out,
  27                          const EVP_MD *digest,
  28                          const uint8_t *id,
  29                          const size_t id_len,
  30                          const EC_KEY *key);
  31
  32 /*
  33  * SM2 signature operation. Computes Z and then signs H(Z || msg) using SM2
  34  */
  35 ECDSA_SIG *sm2_do_sign(const EC_KEY *key,
  36                        const EVP_MD *digest,
  37                        const uint8_t *id,
  38                        const size_t id_len,
  39                        const uint8_t *msg, size_t msg_len);
  40
  41 int sm2_do_verify(const EC_KEY *key,
  42                   const EVP_MD *digest,
  43                   const ECDSA_SIG *signature,
  44                   const uint8_t *id,
  45                   const size_t id_len,
  46                   const uint8_t *msg, size_t msg_len);
  47
  48 /*
  49  * SM2 signature generation.
  50  */
  51 int sm2_internal_sign(const unsigned char *dgst, int dgstlen,
  52                       unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
  53
  54 /*
  55  * SM2 signature verification.
  56  */
  57 int sm2_internal_verify(const unsigned char *dgst, int dgstlen,
  58                         const unsigned char *sig, int siglen, EC_KEY *eckey);
  59
  60 /*
  61  * SM2 encryption
  62  */
  63 int sm2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
  64                         size_t *ct_size);
  65
  66 int sm2_plaintext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
  67                        size_t *pt_size);
  68
  69 int sm2_encrypt(const EC_KEY *key,
  70                 const EVP_MD *digest,
  71                 const uint8_t *msg,
  72                 size_t msg_len,
  73                 uint8_t *ciphertext_buf, size_t *ciphertext_len);
  74
  75 int sm2_decrypt(const EC_KEY *key,
  76                 const EVP_MD *digest,
  77                 const uint8_t *ciphertext,
  78                 size_t ciphertext_len, uint8_t *ptext_buf, size_t *ptext_len);
  79
  80 const unsigned char *sm2_algorithmidentifier_encoding(int md_nid, size_t *len);
  81 # endif /* OPENSSL_NO_SM2 */
  82 #endif