tbcs_ppzksnark/prover.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:
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// The above copyright notice and this permission notice shall be included in all
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//---------------------------------------------------------------------------//
 
#ifndef CRYPTO3_ZK_TBCS_PPZKSNARK_BASIC_PROVER_HPP
#define CRYPTO3_ZK_TBCS_PPZKSNARK_BASIC_PROVER_HPP
 
#include <nil/crypto3/zk/snark/relations/constraint_satisfaction_problems/uscs.hpp>
#include <nil/crypto3/zk/snark/reductions/tbcs_to_uscs.hpp>
#include <nil/crypto3/zk/snark/schemes/ppzksnark/uscs_ppzksnark.hpp>
#include <nil/crypto3/zk/snark/schemes/ppzksnark/tbcs_ppzksnark/detail/basic_policy.hpp>
#include <nil/crypto3/zk/snark/algorithms/prove.hpp>
 
namespace nil {
    namespace crypto3 {
        namespace zk {
            namespace snark {
 
                template<typename CurveType>
                class tbcs_ppzksnark_prover {
                    typedef detail::tbcs_ppzksnark_policy<CurveType> policy_type;
 
                public:
                    typedef typename policy_type::circuit_type circuit_type;
                    typedef typename policy_type::primary_input_type primary_input_type;
                    typedef typename policy_type::auxiliary_input_type auxiliary_input_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::processed_verification_key_type processed_verification_key_type;
 
                    typedef typename policy_type::keypair_type keypair_type;
                    typedef typename policy_type::proof_type proof_type;
 
                    static inline proof_type process(const proving_key_type &pk,
                                                     const primary_input_type &primary_input,
                                                     const auxiliary_input_type &auxiliary_input) {
                        typedef typename CurveType::scalar_field_type FieldType;
 
                        const uscs_variable_assignment<FieldType> uscs_va =
                            reductions::tbcs_to_uscs<FieldType>::witness_map(pk.circuit, primary_input, auxiliary_input);
                        const uscs_primary_input<FieldType> uscs_pi =
                            algebra::convert_bit_vector_to_field_element_vector<FieldType>(primary_input);
                        const uscs_auxiliary_input<FieldType> uscs_ai(
                            uscs_va.begin() + primary_input.size(),
                            uscs_va.end());    // TODO: faster to just change bacs_to_r1cs<field_type>::witness_map into two :(
 
                        return prove<uscs_ppzksnark<CurveType>>(pk.uscs_pk, uscs_pi, uscs_ai);
                    }
                };
            }    // namespace snark
        }        // namespace zk
    }            // namespace crypto3
}    // namespace nil
 
#endif    // CRYPTO3_ZK_TBCS_PPZKSNARK_BASIC_PROVER_HPP