secure_multiplication_server.h

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/*
SeComLib
Copyright 2012-2013 TU Delft, Information Security & Privacy Lab (http://isplab.tudelft.nl/)

Contributors:
Inald Lagendijk (R.L.Lagendijk@TUDelft.nl)
Mihai Todor (todormihai@gmail.com)
Thijs Veugen (P.J.M.Veugen@tudelft.nl)
Zekeriya Erkin (z.erkin@tudelft.nl)

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.
*/
#ifndef SECURE_MULTIPLICATION_SERVER_HEADER_GUARD
#define SECURE_MULTIPLICATION_SERVER_HEADER_GUARD

//include our headers
#include "utils/config.h"
#include "big_integer.h"
#include "random_provider.h"
#include "randomizer_cache.h"
#include "blinding_factor_cache_parameters.h"
#include "secure_multiplication_blinding_factor_container.h"
#include "secure_multiplication_client.h"

namespace SeComLib {
namespace Core {
    //forward-declare required classes
    template <typename T_CryptoProvider>
    class SecureMultiplicationClient;

    template <typename T_CryptoProvider>
    class SecureMultiplicationServer {
    public:
        SecureMultiplicationServer (const T_CryptoProvider &cryptoProvider, const size_t l, const std::string &configurationPath);

        ~SecureMultiplicationServer () {}

        typename T_CryptoProvider::Ciphertext Multiply (const typename T_CryptoProvider::Ciphertext &lhs, const typename T_CryptoProvider::Ciphertext &rhs);

        void SetClient (const std::shared_ptr<SecureMultiplicationClient<T_CryptoProvider>> &secureMultiplicationClient);

    private:
        typedef SecureMultiplicationBlindingFactorContainer<T_CryptoProvider, BlindingFactorCacheParameters> BlindingFactorContainer;

        const T_CryptoProvider &cryptoProvider;

        RandomizerCache<BlindingFactorContainer> blindingFactorCache;

        std::weak_ptr<const SecureMultiplicationClient<T_CryptoProvider>> secureMultiplicationClient;

        SecureMultiplicationServer (SecureMultiplicationServer const &);

        SecureMultiplicationServer operator= (SecureMultiplicationServer const &);
    };
}//namespace Core
}//namespace SeComLib

//Separate the implementation from the declaration of template methods
#include "secure_multiplication_server.hpp"

#endif//SECURE_MULTIPLICATION_SERVER_HEADER_GUARD