tomFlowee
0a2e552168
This introduces a new BlockHeader helper class which Block and MutableBlock can both produce, which helps a lot of methods to be ported to no longer be dependent on us using a MutableBlock object, which is too costly to use when we have no intention to alter the block.
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
/*
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* This file is part of the Flowee project
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* Copyright (C) 2026 Tom Zander <tom@flowee.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "BlockHeader.h"
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#include "Block.h"
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#include <hash.h>
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BlockHeader::BlockHeader(const Block &block)
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: nVersion(block.blockVersion()),
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hashPrevBlock(block.previousBlockId()),
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hashMerkleRoot(block.merkleRoot()),
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nTime(block.timestamp()),
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nBits(block.bits()),
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nNonce(block.nonce())
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{
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}
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uint256 BlockHeader::createHash() const
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{
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uint8_t header[80];
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*reinterpret_cast<uint32_t*>(header) = nVersion;
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memcpy(header + 4, hashPrevBlock.begin(), 32);
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memcpy(header + 36, hashMerkleRoot.begin(), 32);
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*reinterpret_cast<uint32_t*>(header + 68) = nTime;
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*reinterpret_cast<uint32_t*>(header + 72) = nBits;
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*reinterpret_cast<uint32_t*>(header + 76) = nNonce;
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CHash256 ctx;
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ctx.write(header, 80);
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uint256 result;
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ctx.finalize((unsigned char*)&result);
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return result;
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}
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