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Proof_of_work for non-poseidon hash reverted#5 #36

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Proof_of_work for non-poseidon hash reverted#5 #36

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52 changes: 51 additions & 1 deletion include/nil/actor/zk/commitments/detail/polynomial/proof_of_work.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -107,9 +107,59 @@ namespace nil {
return ((result & mask) == 0);
}
};

template<typename TranscriptHashType, typename OutType = std::uint32_t, std::uint32_t MASK=0xFFFF0000>
class proof_of_work {
public:
using transcript_hash_type = TranscriptHashType;
using transcript_type = transcript::fiat_shamir_heuristic_sequential<transcript_hash_type>;
using output_type = OutType;

constexpr static std::uint32_t mask = MASK;

static inline boost::property_tree::ptree get_params() {
boost::property_tree::ptree params;
params.put("mask", mask);
return params;
}

static inline OutType generate(transcript_type &transcript) {
output_type proof_of_work = std::rand();
output_type result;
std::vector<std::uint8_t> bytes(4);

while( true ) {
transcript_type tmp_transcript = transcript;
bytes[0] = std::uint8_t((proof_of_work&0xFF000000)>>24);
bytes[1] = std::uint8_t((proof_of_work&0x00FF0000)>>16);
bytes[2] = std::uint8_t((proof_of_work&0x0000FF00)>>8);
bytes[3] = std::uint8_t(proof_of_work&0x000000FF);

tmp_transcript(bytes);
result = tmp_transcript.template int_challenge<output_type>();
if ((result & mask) == 0)
break;
proof_of_work++;
}
transcript(bytes);
result = transcript.template int_challenge<output_type>();
return proof_of_work;
}

static inline bool verify(transcript_type &transcript, output_type proof_of_work) {
std::vector<std::uint8_t> bytes(4);
bytes[0] = std::uint8_t((proof_of_work&0xFF000000)>>24);
bytes[1] = std::uint8_t((proof_of_work&0x00FF0000)>>16);
bytes[2] = std::uint8_t((proof_of_work&0x0000FF00)>>8);
bytes[3] = std::uint8_t(proof_of_work&0x000000FF);
transcript(bytes);
output_type result = transcript.template int_challenge<output_type>();
return ((result & mask) == 0);
}
};
}
}
}
}

#endif // ACTOR_PROOF_OF_WORK_HPP
#endif // ACTOR_PROOF_OF_WORK_HPP