private void ApproveTx(BlockHeader parent, Transaction tx)
{
tx.Nonce = _stateReader.GetNonce(parent.StateRoot, tx.SenderAddress);
_wallet.Sign(tx, _chainId);
tx.Hash = tx.CalculateHash();
tx.Timestamp = _timestamper.EpochSeconds;
}
public void Sign(Transaction tx, int chainId)
{
if (_logger.IsDebug)
{
_logger.Debug($"Signing transaction: {tx.Value} to {tx.To}");
}
IBasicWallet.Sign(this, tx, chainId);
}
private Block Seal(Block block)
{
// Bail out if we're unauthorized to sign a block
if (!CanSeal(block.Number, block.ParentHash))
{
if (_logger.IsInfo)
{
_logger.Info($"Not authorized to seal the block {block.ToString(Block.Format.Short)}");
}
return(null);
}
BlockHeader header = block.Header;
// Sealing the genesis block is not supported
UInt256 number = header.Number;
if (number == 0)
{
throw new InvalidOperationException("Can't sign genesis block");
}
// For 0-period chains, refuse to seal empty blocks (no reward but would spin sealing)
if (_config.BlockPeriod == 0 && block.Transactions.Length == 0)
{
if (_logger.IsError)
{
_logger.Error($"Not sealing empty block on 0-period chain {block.Number}");
}
throw new InvalidOperationException("An attempt has been made to seal an empty block on a 0-period clique chain");
}
// Sign all the things!
Keccak headerHash = _snapshotManager.CalculateCliqueHeaderHash(header);
Signature signature = _wallet.Sign(headerHash, _sealerAddress);
// Copy signature bytes (R and S)
var signatureBytes = signature.Bytes;
Array.Copy(signatureBytes, 0, header.ExtraData, header.ExtraData.Length - Clique.ExtraSealLength, signatureBytes.Length);
// Copy signature's recovery id (V)
byte recoveryId = signature.RecoveryId;
header.ExtraData[header.ExtraData.Length - 1] = recoveryId;
return(block);
}
private Block Seal(Block block)
{
// Bail out if we're unauthorized to sign a block
if (!CanSeal(block.Number, block.ParentHash))
{
if (_logger.IsInfo)
{
_logger.Info($"Not authorized to seal the block {block.ToString(Block.Format.Short)}");
}
return(null);
}
var headerHash = BlockHeader.CalculateHash(block.Header, RlpBehaviors.ForSealing);
var signature = _wallet.Sign(headerHash, _nodeAddress);
block.Header.AuRaSignature = signature.BytesWithRecovery;
return(block);
}