snark/systems/ppzksnark/uscs_ppzksnark/proof.hpp

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//---------------------------------------------------------------------------//
// Copyright (c) 2018-2021 Mikhail Komarov <nemo@nil.foundation>
// Copyright (c) 2020-2021 Nikita Kaskov <nbering@nil.foundation>
//
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
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//---------------------------------------------------------------------------//
 
#ifndef CRYPTO3_USCS_PPZKSNARK_PROOF_HPP
#define CRYPTO3_USCS_PPZKSNARK_PROOF_HPP
 
namespace nil {
    namespace crypto3 {
        namespace zk {
            namespace snark {
                template<typename CurveType>
                class uscs_ppzksnark_proof {
                    using g1_type = typename CurveType::template g1_type<>;
                    using g2_type = typename CurveType::template g2_type<>;
 
                public:
 
                    typename g1_type::value_type V_g1;
                    typename g1_type::value_type alpha_V_g1;
                    typename g1_type::value_type H_g1;
                    typename g2_type::value_type V_g2;
 
                    uscs_ppzksnark_proof() :
                        V_g1(g1_type::value_type::one()), alpha_V_g1(g1_type::value_type::one()),
                        H_g1(g1_type::value_type::one()), V_g2(g2_type::value_type::one()) {
                        // invalid proof with valid curve points
                    }
                    uscs_ppzksnark_proof(typename g1_type::value_type &&V_g1,
                                         typename g1_type::value_type &&alpha_V_g1,
                                         typename g1_type::value_type &&H_g1,
                                         typename g2_type::value_type &&V_g2) :
                        V_g1(std::move(V_g1)),
                        alpha_V_g1(std::move(alpha_V_g1)), H_g1(std::move(H_g1)), V_g2(std::move(V_g2)) {};
 
                    std::size_t G1_size() const {
                        return 3;
                    }
 
                    std::size_t G2_size() const {
                        return 1;
                    }
 
                    std::size_t size_in_bits() const {
                        return G1_size() * g1_type::value_bits + G2_size() * g2_type::value_bits;
                    }
 
                    bool is_well_formed() const {
                        return (V_g1.is_well_formed() && alpha_V_g1.is_well_formed() && H_g1.is_well_formed() &&
                                V_g2.is_well_formed());
                    }
 
                    bool operator==(const uscs_ppzksnark_proof &other) const {
                        return (this->V_g1 == other.V_g1 && this->alpha_V_g1 == other.alpha_V_g1 &&
                                this->H_g1 == other.H_g1 && this->V_g2 == other.V_g2);
                    }
                };
            }    // namespace snark
        }        // namespace zk
    }            // namespace crypto3
}    // namespace nil
 
#endif    // CRYPTO3_R1CS_PPZKSNARK_BASIC_PROVER_HPP