parsec/agent/runners/evm/hash.cpp

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// Copyright (c) 2021 MIT Digital Currency Initiative,
//                    Federal Reserve Bank of Boston
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#include "hash.hpp"
 
#include <cstring>
#include <ethash/keccak.hpp>
#include <iomanip>
#include <vector>
 
namespace cbdc {
    auto keccak_data(const void* data, size_t len) -> hash_t {
        hash_t ret{};
        auto data_vec = std::vector<unsigned char>(len);
        std::memcpy(data_vec.data(), data, len);
        auto resp = ethash::keccak256(data_vec.data(), data_vec.size());
        std::memcpy(ret.data(), &resp, sizeof(resp));
        return ret;
    }
}