secure_extremum_selection_server.h

Go to the documentation of this file.

/*
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_EXTREMUM_SELECTION_SERVER_HEADER_GUARD
#define SECURE_EXTREMUM_SELECTION_SERVER_HEADER_GUARD

//include our headers
#include "utils/config.h"
#include "big_integer.h"
#include "random_provider.h"
#include "randomizer_cache.h"
#include "paillier.h"
#include "dgk.h"
#include "secure_multiplication_server.h"

#include "secure_extremum_selection_client.h"

namespace SeComLib {
namespace Core {
    //forward-declare required classes
    template <typename T_SecureComparisonServer, typename T_SecureComparisonClient>
    class SecureExtremumSelectionClient;

    template <typename T_SecureComparisonServer, typename T_SecureComparisonClient>
    class SecureExtremumSelectionServer {
    public:
        typedef std::vector<Paillier::Ciphertext> ItemContainer;

        SecureExtremumSelectionServer (const Paillier &paillierCryptoProvider, const Dgk &dgkCryptoProvider, const std::string &configurationPath);

        ~SecureExtremumSelectionServer () {}

        Paillier::Ciphertext GetMinimum (const ItemContainer &items) const;

        Paillier::Ciphertext GetMaximum (const ItemContainer &items) const;

        void SetClient (const std::shared_ptr<SecureExtremumSelectionClient<T_SecureComparisonServer, T_SecureComparisonClient>> &secureExtremumSelectionClient);

        const std::shared_ptr<T_SecureComparisonServer> &GetSecureComparisonServer () const;

        const std::shared_ptr<SecureMultiplicationServer<Paillier>> &GetSecureMultiplicationServer () const;

    private:
        const Paillier &paillierCryptoProvider;

        const Dgk &dgkCryptoProvider;

        std::weak_ptr<const SecureExtremumSelectionClient<T_SecureComparisonServer, T_SecureComparisonClient>> secureExtremumSelectionClient;

        const std::shared_ptr<T_SecureComparisonServer> secureComparisonServer;

        const std::shared_ptr<SecureMultiplicationServer<Paillier>> secureMultiplicationServer;

        SecureExtremumSelectionServer (SecureExtremumSelectionServer const &);

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

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

#endif//SECURE_EXTREMUM_SELECTION_SERVER_HEADER_GUARD