mirror of
https://github.com/monero-project/monero.git
synced 2024-12-23 03:59:33 +00:00
63 lines
2.8 KiB
C++
63 lines
2.8 KiB
C++
// Copyright (c) 2014-2023, The Monero Project
|
|
//
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification, are
|
|
// permitted provided that the following conditions are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
// conditions and the following disclaimer.
|
|
//
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
|
// of conditions and the following disclaimer in the documentation and/or other
|
|
// materials provided with the distribution.
|
|
//
|
|
// 3. Neither the name of the copyright holder nor the names of its contributors may be
|
|
// used to endorse or promote products derived from this software without specific
|
|
// prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
|
|
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
|
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
|
|
|
|
#pragma once
|
|
|
|
#include <cstdint>
|
|
#include <vector>
|
|
#include <string>
|
|
#include <boost/multiprecision/cpp_int.hpp>
|
|
#include "crypto/hash.h"
|
|
|
|
namespace cryptonote
|
|
{
|
|
typedef boost::multiprecision::uint128_t difficulty_type;
|
|
|
|
/**
|
|
* @brief checks if a hash fits the given difficulty
|
|
*
|
|
* The hash passes if (hash * difficulty) < 2^256.
|
|
* Phrased differently, if (hash * difficulty) fits without overflow into
|
|
* the least significant 256 bits of the 320 bit multiplication result.
|
|
*
|
|
* @param hash the hash to check
|
|
* @param difficulty the difficulty to check against
|
|
*
|
|
* @return true if valid, else false
|
|
*/
|
|
bool check_hash_64(const crypto::hash &hash, uint64_t difficulty);
|
|
uint64_t next_difficulty_64(std::vector<std::uint64_t> timestamps, std::vector<uint64_t> cumulative_difficulties, size_t target_seconds);
|
|
|
|
bool check_hash_128(const crypto::hash &hash, difficulty_type difficulty);
|
|
bool check_hash(const crypto::hash &hash, difficulty_type difficulty);
|
|
difficulty_type next_difficulty(std::vector<std::uint64_t> timestamps, std::vector<difficulty_type> cumulative_difficulties, size_t target_seconds);
|
|
|
|
std::string hex(difficulty_type v);
|
|
}
|