include/crypto/sm2.h

   1 /*
   2  * Copyright 2017-2021 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 # pragma once
  15
  16 # include <openssl/opensslconf.h>
  17
  18 # ifndef OPENSSL_NO_SM2
  19
  20 #  include <openssl/ec.h>
  21 #  include "crypto/types.h"
  22
  23 int ossl_sm2_key_private_check(const EC_KEY *eckey);
  24
  25 /* The default user id as specified in GM/T 0009-2012 */
  26 #  define SM2_DEFAULT_USERID "1234567812345678"
  27
  28 int ossl_sm2_compute_z_digest(uint8_t *out,
  29                               const EVP_MD *digest,
  30                               const uint8_t *id,
  31                               const size_t id_len,
  32                               const EC_KEY *key);
  33
  34 /*
  35  * SM2 signature operation. Computes Z and then signs H(Z || msg) using SM2
  36  */
  37 ECDSA_SIG *ossl_sm2_do_sign(const EC_KEY *key,
  38                             const EVP_MD *digest,
  39                             const uint8_t *id,
  40                             const size_t id_len,
  41                             const uint8_t *msg, size_t msg_len);
  42
  43 int ossl_sm2_do_verify(const EC_KEY *key,
  44                        const EVP_MD *digest,
  45                        const ECDSA_SIG *signature,
  46                        const uint8_t *id,
  47                        const size_t id_len,
  48                        const uint8_t *msg, size_t msg_len);
  49
  50 /*
  51  * SM2 signature generation.
  52  */
  53 int ossl_sm2_internal_sign(const unsigned char *dgst, int dgstlen,
  54                            unsigned char *sig, unsigned int *siglen,
  55                            EC_KEY *eckey);
  56
  57 /*
  58  * SM2 signature verification.
  59  */
  60 int ossl_sm2_internal_verify(const unsigned char *dgst, int dgstlen,
  61                              const unsigned char *sig, int siglen,
  62                              EC_KEY *eckey);
  63
  64 /*
  65  * SM2 encryption
  66  */
  67 int ossl_sm2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest,
  68                              size_t msg_len, size_t *ct_size);
  69
  70 int ossl_sm2_plaintext_size(const EC_KEY *key, const EVP_MD *digest,
  71                             size_t msg_len, size_t *pt_size);
  72
  73 int ossl_sm2_encrypt(const EC_KEY *key,
  74                      const EVP_MD *digest,
  75                      const uint8_t *msg, size_t msg_len,
  76                      uint8_t *ciphertext_buf, size_t *ciphertext_len);
  77
  78 int ossl_sm2_decrypt(const EC_KEY *key,
  79                      const EVP_MD *digest,
  80                      const uint8_t *ciphertext, size_t ciphertext_len,
  81                      uint8_t *ptext_buf, size_t *ptext_len);
  82
  83 const unsigned char *ossl_sm2_algorithmidentifier_encoding(int md_nid,
  84                                                            size_t *len);
  85 # endif /* OPENSSL_NO_SM2 */
  86 #endif