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 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
20/* The default user id as specified in GM/T 0009-2012 */
21# define SM2_DEFAULT_USERID "1234567812345678"
22
23int 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 */
32ECDSA_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
38int 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 */
48int 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 */
54int sm2_verify(const unsigned char *dgst, int dgstlen,
55 const unsigned char *sig, int siglen, EC_KEY *eckey);
56
57/*
58 * SM2 encryption
59 */
60int sm2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
61 size_t *ct_size);
62
63int sm2_plaintext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
64 size_t *pt_size);
65
66int 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
72int 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
79