public static void ValidateBlock(Block block)
{
// first validate the Nonce matches the difficulty mask
string mineHash = Sha256Hash.Hash(BitConverter.GetBytes(block.Nonce), block.PreviousBlockHash);
if (!Regex.IsMatch(mineHash, block.DifficultyMask))
{
throw new Exception("Nonce does not match difficulty mask");
}
for (int i = 0; i < block.Transactions.Count; i++)
{
Transaction t = block.Transactions[i];
TransactionValidatorService.ValidateTransaction(t);
}
}
public void FromGenesisPoW()
{
Core core = new Core();
EcdsaKeyPair genesisWalletKp = new EcdsaKeyPair(Globals.Keys.GenesisPrivateKey);
EcdsaKeyPair otherKp = new EcdsaKeyPair();
Block genesis = core.GenesisBlock;
// find nonce for nextBlock
Regex difficultyTestRegex = new Regex(genesis.DifficultyMask);
UInt16 testNonce = 0;
while (true)
{
string mineHash = Sha256Hash.Hash(BitConverter.GetBytes(testNonce), genesis.PreviousBlockHash);
if (difficultyTestRegex.IsMatch(mineHash))
{
break;
}
testNonce++;
}
Block nextBlock = BlockFactory.GenerateBlock(genesisWalletKp.Public);
Transaction nextTransaction = new Transaction();
nextTransaction.Inputs.Add(new TransactionInput {
PreviousTransactionHash = genesis.Transactions[0].Hash, PreviousTransactionOutIndex = 0
});
nextTransaction.Outputs.Add(new TransactionOutput
{
Amount = 1M,
To = otherKp.Public
});
nextTransaction.Sign(genesisWalletKp.Private);
nextBlock.Nonce = testNonce;
nextBlock.Transactions.Add(nextTransaction);
BlockValidatorService.ValidateBlock(nextBlock);
}
internal string ComputeHash()
{
List <byte> allBytes = new List <byte>();
foreach (TransactionInput txIn in this.Inputs)
{
allBytes.AddRange(ChainParams.Encoder.GetBytes(txIn.PreviousTransactionHash));
}
foreach (TransactionOutput txOut in this.Outputs)
{
allBytes.AddRange((byte[])txOut.Amount);
allBytes.AddRange(ChainParams.Encoder.GetBytes(Sha256Hash.Hash(txOut.To)));
}
return(Sha256Hash.Hash(allBytes.ToArray()));
}
