public void GenerateBlock()
{
Block newBlock = new Block();
Hash blockHash;
BlockMiningManager miningManager = new BlockMiningManager();
DateTime dateTimeStampBlock = DateTime.UtcNow;
Hash prevBlockHash = ChainedBlocks.Length - 1 > -1? this.GetBlock(ChainedBlocks.Length - 1).blockHash: null;
//Add a new block to the chain
blockHash = miningManager.CalculateHash(prevBlockHash, unconfirmedTransactions, dateTimeStampBlock); //Create Hash (use difficulty)
try
{
newBlock.CreateBlock(this, blockHash, dateTimeStampBlock); //Try
Array.Resize(ref ChainedBlocks, ChainedBlocks.Length + 1);
ChainedBlocks[ChainedBlocks.Length - 1] = newBlock;
foreach (var item in unconfirmedTransactions)
{
//Send unconfirmed transactions to block
newBlock.AddTransaction(item);
}
Console.WriteLine("Added block at height: " + GetHeight() + " DateTime Stamp: " + newBlock.blockDateTimeStamp);
unconfirmedTransactions.Clear(); //Clear unconfirmed transactions
}
catch
{
Console.WriteLine("Skipped inserting block due to errors");
return;
}
}
//This class handles the mining of the block based on the transactions in a block + datetime stamp (utc) + previous hash
public Hash CalculateHash(Hash _parentHash, IList <BlockTransaction> _unconfirmedTransactions, DateTime _dateTimeStampBlock)
{
byte[] Input = BlockMiningManager.GenerateBytes(_parentHash != null? Convert.ToString(_parentHash.GetHashCode()):"", _dateTimeStampBlock.ToString(), Convert.ToString(_unconfirmedTransactions.GetHashCode()));
//Design decision, vary difficulty by using PBKDF2 or maintain SHA3 256...later to be decided
Sha3Digest digest = new Sha3Digest(256);
digest.BlockUpdate(Input, 0, Input.Length);
byte[] result = new byte[32];
digest.DoFinal(result, 0);
return(new Hash(result));
}