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// Copyright (c) 2014, The Monero Project
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
// 
// 1. Redistributions of source code must retain the above copyright notice, this list of
//    conditions and the following disclaimer.
// 
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
//    materials provided with the distribution.
// 
// 3. Neither the name of the copyright holder nor the names of its contributors may be
//    used to endorse or promote products derived from this software without specific
//    prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// Parts of this file are originally copyright (c) 2006-2013, Andrey N. Sabelnikov

#ifndef _CRYPTED_STORAGE_H_
#define _CRYPTED_STORAGE_H_

#include "cryptopp_helper.h"

namespace epee
{
template<class t_base_storage, class crypt_provider, class t_key_provider>
class crypted_storage: public t_base_storage
{
public: 
	size_t	PackToSolidBuffer(std::string& targetObj)
	{
		size_t res = t_base_storage::PackToSolidBuffer(targetObj);
		if(res <= 0)
			return res;
		
		if(!crypt_provider::encrypt(targetObj, t_key_provider::get_storage_default_key()))
			return 0;

		return targetObj.size();
	}

	size_t		LoadFromSolidBuffer(const std::string& pTargetObj)
	{
		std::string buff_to_decrypt = pTargetObj;
		if(crypt_provider::decrypt(buff_to_decrypt, t_key_provider::get_storage_default_key()))
			return t_base_storage::LoadFromSolidBuffer(buff_to_decrypt);

		return 0;
	}
};
}

#endif //_CRYPTED_STORAGE_H_