Program Listing for File rlwe-ciphertext.h

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//==================================================================================
// BSD 2-Clause License
//
// Copyright (c) 2014-2022, NJIT, Duality Technologies Inc. and other contributors
//
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// Author TPOC: contact@openfhe.org
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//
// 1. Redistributions of source code must retain the above copyright notice, this
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#ifndef _RGSW_CIPHERTEXT_H_
#define _RGSW_CIPHERTEXT_H_

#include "lwe-ciphertext.h"
#include "lwe-keyswitchkey.h"
#include "lwe-privatekey.h"
#include "lwe-cryptoparameters.h"

#include "lattice/lat-hal.h"
#include "math/discretegaussiangenerator.h"
#include "math/nbtheory.h"
#include "utils/serializable.h"
#include "utils/utilities.h"

#include <memory>
#include <string>
#include <utility>
#include <vector>
#include <map>

namespace lbcrypto {

class RLWECiphertextImpl;
using RLWECiphertext      = std::shared_ptr<RLWECiphertextImpl>;
using ConstRLWECiphertext = const std::shared_ptr<const RLWECiphertextImpl>;

class RLWECiphertextImpl : public Serializable {
public:
    RLWECiphertextImpl() = default;

    explicit RLWECiphertextImpl(const std::vector<NativePoly>& elements) : m_elements(elements) {}

    RLWECiphertextImpl(const RLWECiphertextImpl& rhs) : m_elements(rhs.m_elements) {}

    RLWECiphertextImpl(RLWECiphertextImpl&& rhs) noexcept : m_elements(std::move(rhs.m_elements)) {}

    RLWECiphertextImpl& operator=(const RLWECiphertextImpl& rhs) {
        this->m_elements = rhs.m_elements;
        return *this;
    }

    RLWECiphertextImpl& operator=(RLWECiphertextImpl&& rhs) noexcept {
        this->m_elements = std::move(rhs.m_elements);
        return *this;
    }

    const std::vector<NativePoly>& GetElements() const {
        return m_elements;
    }

    std::vector<NativePoly>& GetElements() {
        return m_elements;
    }

    void SetFormat(const Format format) {
        for (size_t i = 0; i < m_elements.size(); ++i)
            m_elements[i].SetFormat(format);
    }

    bool operator==(const RLWECiphertextImpl& other) const {
        return m_elements == other.m_elements;
    }

    bool operator!=(const RLWECiphertextImpl& other) const {
        return !(*this == other);
    }

    template <class Archive>
    void save(Archive& ar, std::uint32_t const version) const {
        ar(::cereal::make_nvp("elements", m_elements));
    }

    template <class Archive>
    void load(Archive& ar, std::uint32_t const version) {
        if (version > SerializedVersion()) {
            OPENFHE_THROW("serialized object version " + std::to_string(version) +
                          " is from a later version of the library");
        }
        ar(::cereal::make_nvp("elements", m_elements));
    }

    std::string SerializedObjectName() const override {
        return "RLWECiphertext";
    }
    static uint32_t SerializedVersion() {
        return 1;
    }

private:
    std::vector<NativePoly> m_elements;
};

}  // namespace lbcrypto

#endif  // _RGSW_CIPHERTEXT_H_