// Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once

#include <iostream>
#include <string>

#include "model_deploy/common/include/deploy_declare.h"

#ifndef PADDLE_MODEL_PROTECT_API_PADDLE_MODEL_ENCRYPT_H
#define PADDLE_MODEL_PROTECT_API_PADDLE_MODEL_ENCRYPT_H

#ifdef __cplusplus
extern "C" {
#endif

/**
 * generate random key
 * 产生随机的 key 信息，如果想要使用当前 SDK，
 * 对于传入的key信息有要求（需符合产生32字节随机值后做 BASE64 编码
 * @return
 */
PD_INFER_DECL std::string paddle_generate_random_key();

/**
 * encrypt __model__, __params__ files in src_dir to dst_dir
 * @param keydata
 * @param src_dir
 * @param dst_dir
 * @return
 */
PD_INFER_DECL int paddle_encrypt_dir(const char* keydata,
                                     const char* src_dir,
                                     const char* dst_dir);

/**
 * encrypt file
 * @param keydata   可使用由 paddle_generate_random_key 接口产生的key，也可以根据规则自己生成
 * @param infile
 * @param outfile
 * @return          error_code
 */
PD_INFER_DECL int paddle_encrypt_model(const char* keydata,
                                       const char* infile,
                                       const char* outfile);

PD_INFER_DECL int encrypt_stream(const std::string &keydata,
                                 std::istream &in_stream,
                                 std::ostream &out_stream);

#ifdef __cplusplus
}
#endif

#endif  // PADDLE_MODEL_PROTECT_API_PADDLE_MODEL_ENCRYPT_H