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WIP: fixed PoW hash computation.

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This commit is contained in:
Jianping Wu 2019-03-08 11:55:31 -08:00
parent 9e442eb109
commit 3a657f0615
1 changed files with 9 additions and 10 deletions
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19
src/primitives/block.cpp
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@ -29,16 +29,15 @@ uint256 CBlockHeader::GetPoWHash() const
cn_slow_hash(BEGIN(nVersion), 80, BEGIN(thash), 2, 0, 0); cn_slow_hash(BEGIN(nVersion), 80, BEGIN(thash), 2, 0, 0);
return thash; return thash;
} }
arith_uint256 blockHash = UintToArith256(GetHash());
arith_uint256 expectedHash = UintToArith256(cnHeader.prev_id); // prev_id of CN header is used to store the kevacoin block hash.
// blockHash should be the same as expectedHash. If so, after the // The value of prev_id and block hash must be the same to prove
// following XOR operatiosn, the value of expectedHash is not changed. // that PoW has been properly done.
blockHash ^= expectedHash; if (GetHash() != cnHeader.prev_id) {
expectedHash ^= blockHash; memset(thash.begin(), 0xff, thash.size());
CryptoNoteHeader cnHeaderCompute = cnHeader; return thash;
// Cryptonote prev_id is used to store kevacoin block hash. }
cnHeaderCompute.prev_id = ArithToUint256(expectedHash); cryptonote::blobdata blob = cryptonote::t_serializable_object_to_blob(cnHeader);
cryptonote::blobdata blob = cryptonote::t_serializable_object_to_blob(cnHeaderCompute);
cn_slow_hash(blob.data(), blob.size(), BEGIN(thash), 2, 0, 0); cn_slow_hash(blob.data(), blob.size(), BEGIN(thash), 2, 0, 0);
return thash; return thash;
} }