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/*
* Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 2017 Ribose Inc. All Rights Reserved.
* Ported from Ribose contributions from Botan.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef OSSL_CRYPTO_SM2_H
# define OSSL_CRYPTO_SM2_H
# include <openssl/opensslconf.h>
# ifndef OPENSSL_NO_SM2
# include <openssl/ec.h>
/* The default user id as specified in GM/T 0009-2012 */
# define SM2_DEFAULT_USERID "1234567812345678"
int sm2_compute_z_digest(uint8_t *out,
const EVP_MD *digest,
const uint8_t *id,
const size_t id_len,
const EC_KEY *key);
/*
* SM2 signature operation. Computes Z and then signs H(Z || msg) using SM2
*/
ECDSA_SIG *sm2_do_sign(const EC_KEY *key,
const EVP_MD *digest,
const uint8_t *id,
const size_t id_len,
const uint8_t *msg, size_t msg_len);
int sm2_do_verify(const EC_KEY *key,
const EVP_MD *digest,
const ECDSA_SIG *signature,
const uint8_t *id,
const size_t id_len,
const uint8_t *msg, size_t msg_len);
/*
* SM2 signature generation.
*/
int sm2_sign(const unsigned char *dgst, int dgstlen,
unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
/*
* SM2 signature verification.
*/
int sm2_verify(const unsigned char *dgst, int dgstlen,
const unsigned char *sig, int siglen, EC_KEY *eckey);
/*
* SM2 encryption
*/
int sm2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
size_t *ct_size);
int sm2_plaintext_size(const unsigned char *ct, size_t ct_size, size_t *pt_size);
int sm2_encrypt(const EC_KEY *key,
const EVP_MD *digest,
const uint8_t *msg,
size_t msg_len,
uint8_t *ciphertext_buf, size_t *ciphertext_len);
int sm2_decrypt(const EC_KEY *key,
const EVP_MD *digest,
const uint8_t *ciphertext,
size_t ciphertext_len, uint8_t *ptext_buf, size_t *ptext_len);
# endif /* OPENSSL_NO_SM2 */
#endif
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