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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 Apache License 2.0 (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
# pragma once
# include <openssl/opensslconf.h>
# if !defined(OPENSSL_NO_SM2) && !defined(FIPS_MODULE)
# include <openssl/ec.h>
# include "crypto/types.h"
int ossl_sm2_key_private_check(const EC_KEY *eckey);
/* The default user id as specified in GM/T 0009-2012 */
# define SM2_DEFAULT_USERID "1234567812345678"
int ossl_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 *ossl_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 ossl_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 ossl_sm2_internal_sign(const unsigned char *dgst, int dgstlen,
unsigned char *sig, unsigned int *siglen,
EC_KEY *eckey);
/*
* SM2 signature verification.
*/
int ossl_sm2_internal_verify(const unsigned char *dgst, int dgstlen,
const unsigned char *sig, int siglen,
EC_KEY *eckey);
/*
* SM2 encryption
*/
int ossl_sm2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest,
size_t msg_len, size_t *ct_size);
int ossl_sm2_plaintext_size(const unsigned char *ct, size_t ct_size,
size_t *pt_size);
int ossl_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 ossl_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);
const unsigned char *ossl_sm2_algorithmidentifier_encoding(int md_nid,
size_t *len);
# endif /* OPENSSL_NO_SM2 */
#endif
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