r1cs_gg_ppzksnark/ipp2/generator.hpp

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//---------------------------------------------------------------------------//
// Copyright (c) 2018-2021 Mikhail Komarov <nemo@nil.foundation>
// Copyright (c) 2020-2021 Ilias Khairullin <ilias@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
// copies or substantial portions of the Software.
//
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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//---------------------------------------------------------------------------//
 
#ifndef CRYPTO3_ZK_R1CS_GG_PPZKSNARK_IPP2_GENERATOR_HPP
#define CRYPTO3_ZK_R1CS_GG_PPZKSNARK_IPP2_GENERATOR_HPP
 
#include <nil/crypto3/zk/snark/systems/ppzksnark/r1cs_gg_ppzksnark/generator.hpp>
#include <nil/crypto3/zk/snark/systems/ppzksnark/r1cs_gg_ppzksnark/ipp2/srs.hpp>
 
namespace nil {
    namespace crypto3 {
        namespace zk {
            namespace snark {
                template<typename CurveType>
                class r1cs_gg_ppzksnark_generator<CurveType, ProvingMode::Aggregate> {
                    typedef detail::r1cs_gg_ppzksnark_basic_policy<CurveType, ProvingMode::Aggregate> policy_type;
                    typedef r1cs_gg_ppzksnark_generator<CurveType, ProvingMode::Basic> basic_generator;
 
                    typedef typename CurveType::scalar_field_type scalar_field_type;
                    typedef typename CurveType::template g1_type<> g1_type;
                    typedef typename CurveType::template g2_type<> g2_type;
 
                public:
                    typedef typename policy_type::constraint_system_type constraint_system_type;
                    typedef typename policy_type::proving_key_type proving_key_type;
                    typedef typename policy_type::verification_key_type verification_key_type;
                    typedef typename policy_type::srs_type srs_type;
                    typedef typename policy_type::keypair_type keypair_type;
                    typedef typename policy_type::srs_pair_type srs_pair_type;
 
                    template<typename DistributionType =
                                 boost::random::uniform_int_distribution<typename scalar_field_type::integral_type>,
                             typename GeneratorType = boost::random::mt19937>
                    static inline keypair_type process(const constraint_system_type &constraint_system) {
 
                        auto [alpha_g1,
                              beta_g1,
                              beta_g2,
                              delta_g1,
                              delta_g2,
                              gamma_g2,
                              A_query,
                              B_query,
                              H_query,
                              L_query,
                              r1cs_copy,
                              alpha_g1_beta_g2,
                              gamma_ABC_g1,
                              gamma_g1] = std::move(basic_generator::basic_process(constraint_system));
 
                        verification_key_type vk(alpha_g1, beta_g2, gamma_g2, delta_g2, gamma_ABC_g1);
 
                        proving_key_type pk(std::move(alpha_g1),
                                            std::move(beta_g1),
                                            std::move(beta_g2),
                                            std::move(delta_g1),
                                            std::move(delta_g2),
                                            std::move(A_query),
                                            std::move(B_query),
                                            std::move(H_query),
                                            std::move(L_query),
                                            std::move(r1cs_copy));
 
                        return {std::move(pk), std::move(vk)};
                    }
 
                    template<typename DistributionType =
                                 boost::random::uniform_int_distribution<typename scalar_field_type::integral_type>,
                             typename GeneratorType = boost::random::mt19937>
                    static inline srs_pair_type process(std::size_t num_proofs) {
 
                        srs_type srs(num_proofs,
                                     random_element<scalar_field_type, DistributionType, GeneratorType>(),
                                     random_element<scalar_field_type, DistributionType, GeneratorType>());
                        return srs.specialize(num_proofs);
                    }
                };
            }    // namespace snark
        }        // namespace zk
    }            // namespace crypto3
}    // namespace nil
 
#endif    // CRYPTO3_ZK_R1CS_GG_PPZKSNARK_IPP2_GENERATOR_HPP