Program Listing for File evalkeyrelin.h

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#ifndef LBCRYPTO_CRYPTO_KEY_EVALKEYRELIN_H
#define LBCRYPTO_CRYPTO_KEY_EVALKEYRELIN_H

#include "key/evalkey.h"
#include "key/evalkeyrelin-fwd.h"

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

namespace lbcrypto {

template <class Element>
class EvalKeyRelinImpl : public EvalKeyImpl<Element> {
private:
    std::vector<Element> m_AKey;
    std::vector<Element> m_BKey;

public:
    explicit EvalKeyRelinImpl(const CryptoContext<Element>& cc) : EvalKeyImpl<Element>(cc) {}

    EvalKeyRelinImpl() = default;

    virtual ~EvalKeyRelinImpl() = default;

    EvalKeyRelinImpl(const EvalKeyRelinImpl<Element>& rhs)
        : EvalKeyImpl<Element>(rhs.context), m_AKey(rhs.m_AKey), m_BKey(rhs.m_BKey) {}

    EvalKeyRelinImpl(EvalKeyRelinImpl<Element>&& rhs) noexcept
        : EvalKeyImpl<Element>(rhs.context), m_AKey(std::move(rhs.m_AKey)), m_BKey(std::move(rhs.m_BKey)) {}

    operator bool() const {
        return (this->context != nullptr) && (m_AKey.size() != 0) && (m_BKey.size() != 0);
    }

    EvalKeyRelinImpl<Element>& operator=(const EvalKeyRelinImpl<Element>& rhs) {
        this->context = rhs.context;
        m_AKey        = rhs.m_AKey;
        m_BKey        = rhs.m_BKey;
        return *this;
    }

    EvalKeyRelinImpl<Element>& operator=(EvalKeyRelinImpl<Element>&& rhs) noexcept {
        this->context = std::move(rhs.context);
        m_AKey        = std::move(rhs.m_AKey);
        m_BKey        = std::move(rhs.m_BKey);
        return *this;
    }

    void SetAVector(const std::vector<Element>& a) override {
        m_AKey = a;
    }

    void SetAVector(std::vector<Element>&& a) noexcept override {
        m_AKey = std::move(a);
    }

    const std::vector<Element>& GetAVector() const override {
        return m_AKey;
    }

    void SetBVector(const std::vector<Element>& b) override {
        m_BKey = b;
    }

    void SetBVector(std::vector<Element>&& b) noexcept override {
        m_BKey = std::move(b);
    }

    const std::vector<Element>& GetBVector() const override {
        return m_BKey;
    }

    void ClearKeys() override {
        m_AKey.clear();
        m_BKey.clear();
    }

    bool key_compare(const EvalKeyImpl<Element>& rhs) const override {
        const auto& r = static_cast<const EvalKeyRelinImpl<Element>&>(rhs);
        return CryptoObject<Element>::operator==(rhs) && m_AKey == r.m_AKey && m_BKey == r.m_BKey;
    }

    template <class Archive>
    void save(Archive& ar, std::uint32_t const version) const {
        ar(::cereal::base_class<EvalKeyImpl<Element>>(this));
        ar(::cereal::make_nvp("ak", m_AKey));
        ar(::cereal::make_nvp("bk", m_BKey));
    }

    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::base_class<EvalKeyImpl<Element>>(this));
        ar(::cereal::make_nvp("ak", m_AKey));
        ar(::cereal::make_nvp("bk", m_BKey));
    }

    std::string SerializedObjectName() const override {
        return "EvalKeyRelin";
    }

    static uint32_t SerializedVersion() {
        return 1;
    }
};

}  // namespace lbcrypto

#endif