public Logger(Context context, ILoggerFactory loggerFactory, LogFilter logFilter, WalletStore walletStore,
WalletService walletService, BlockMiner blockMiner, ChainService chainService, NodeConnectionService nodeConnectionService, MinerService minerService) : base(context)
{
this.context = context;
this.logFilter = logFilter;
this.walletStore = walletStore;
this.walletService = walletService;
this.blockMiner = blockMiner;
this.chainService = chainService;
this.nodeConnectionService = nodeConnectionService;
this.minerService = minerService;
this.logger = loggerFactory.CreateLogger <Staker>();
}
public void Test1()
{
var b = new Block
{
Data = Encoding.UTF8.GetBytes("hello world"),
PreviousBlockHash = String.Empty
};
var x = BlockMiner.ComputeBlockNonce(b, 4);
b.Nonce = x;
var computedHash = BlockMiner.ComputeHashForBlock(b);
Assert.IsTrue(BlockMiner.LeadingZeroes(computedHash) >= 4);
}
static void Main(string[] args)
{
Console.WriteLine("Welcome to Loan Star Blockchain!");
Console.WriteLine("*********************************************************************************************************************");
Console.WriteLine("+++ Step 1: Read blockchain difficulty of work parameters");
Console.ReadKey();
Console.WriteLine($"Average mining time (msec):{ChainHelper.MINING_PERIOD}, Difficulty of work (#leading zeroes):{ChainHelper.NUMBER_ZEROES}");
Console.ReadKey();
Console.WriteLine("*********************************************************************************************************************");
Console.WriteLine("+++ Step 2: Add first set of transactions to blockchain");
Console.ReadKey();
var blockchain = new Blockchain();
BlockMiner miner = new BlockMiner(blockchain);
string error;
var trxList1 = new List<Tuple<string,string,double>>();
trxList1.Add(new Tuple<string, string, double>("Anton-Georgescu","Loan003.Repayment.Pay",200));
trxList1.Add(new Tuple<string, string, double>("Alex-Georgescu", "Loan002.Repayment.Pay", 214));
trxList1.Add(new Tuple<string, string, double>("Loan002.Repayment.Credit", "Alex-Georgescu", 200));
Console.WriteLine($"adding {trxList1.Count} raw transactions...");
foreach (var trx in trxList1)
Console.WriteLine($"...[Transaction] from_account:{trx.Item1},to_account:{trx.Item2},amount:{trx.Item3} ");
Console.WriteLine("*********************************************************************************************************************");
Console.WriteLine("+++ Step 3: Run blockchain mining process");
Console.ReadKey();
miner.TransactionPool = AddTransactionsToPool(trxList1);
Console.WriteLine($"{DateTime.Now}: start blockchained mining...");
miner.DoGenerateBlockTest(blockchain);
Console.WriteLine($"{DateTime.Now}: end blockchained mining.");
Console.WriteLine($"blockchain is valid:{blockchain.IsChainValid(out error)}");
Console.WriteLine("*********************************************************************************************************************");
Console.WriteLine("+++ Step 4: Add next set of transactions to blockchain");
Console.ReadKey();
var trxList2 = new List<Tuple<string, string, double>>();
trxList2.Add(new Tuple<string, string, double>("Jake-Trajanovich", "Loan002.Repayment.Pay", 200));
trxList2.Add(new Tuple<string, string, double>("Cora-Trajanovich", "Loan003.Repayment.Pay", 214));
trxList2.Add(new Tuple<string, string, double>("Alex-Georgescu", "Loan002.Repayment.Pay", 72));
Console.WriteLine($"adding {trxList2.Count} raw transactions...");
foreach (var trx in trxList1)
Console.WriteLine($"...[Transaction] from_account:{trx.Item1},to_account:{trx.Item2},amount:{trx.Item3} ");
Console.WriteLine("*********************************************************************************************************************");
Console.WriteLine("+++ Step 5: Run blockchain mining process");
Console.ReadKey();
miner.TransactionPool = AddTransactionsToPool(trxList2);
Console.WriteLine($"{DateTime.Now}: start blockchained mining...");
miner.DoGenerateBlockTest(blockchain);
Console.WriteLine($"{DateTime.Now}: end blockchained mining.");
Console.WriteLine($"blockchain is valid:{blockchain.IsChainValid(out error)}");
string testAccount = "Alex-Georgescu";
Console.WriteLine("*********************************************************************************************************************");
Console.WriteLine($"+++ Step 6: List existing transactions for {testAccount}");
Console.ReadKey();
Console.WriteLine($"list existing transactions for:{testAccount}");
var trxs = blockchain.GetAllTransactionsForAccount(testAccount);
foreach (var tx in trxs)
Console.WriteLine($"timestamp:{tx.timestamp},from:{tx.fromAccount},to:{tx.toAccount},amount:{tx.amount},isvalid:{tx.IsValid()}");
Console.WriteLine("*********************************************************************************************************************");
Console.WriteLine($"+++ Step 7: Tamper with an existing transaction");
Console.ReadKey();
Console.WriteLine("*********************************************************************************************************************");
Console.WriteLine($"tampering with blockchain transaction...");
Console.WriteLine($"[original] timestamp:{blockchain.blocks[2].transactions[0].timestamp},from:{blockchain.blocks[2].transactions[0].fromAccount},to:{blockchain.blocks[2].transactions[0].toAccount},amount:{blockchain.blocks[2].transactions[0].amount},isvalid:{blockchain.blocks[2].transactions[0].IsValid()}");
blockchain.blocks[2].transactions[0].amount = 50;
Console.WriteLine($"[tampered] timestamp:{blockchain.blocks[2].transactions[0].timestamp},from:{blockchain.blocks[2].transactions[0].fromAccount},to:{blockchain.blocks[2].transactions[0].toAccount},amount:{blockchain.blocks[2].transactions[0].amount},isvalid:{blockchain.blocks[2].transactions[0].IsValid()}");
var isChainValid = blockchain.IsChainValid(out error);
Console.WriteLine($"blockchain is valid:{isChainValid} {error}");
Console.WriteLine($"trying to revert transaction to initial value...");
Console.WriteLine($"[original] timestamp:{blockchain.blocks[2].transactions[0].timestamp},from:{blockchain.blocks[2].transactions[0].fromAccount},to:{blockchain.blocks[2].transactions[0].toAccount},amount:{blockchain.blocks[2].transactions[0].amount},isvalid:{blockchain.blocks[2].transactions[0].IsValid()}");
blockchain.blocks[2].transactions[0].amount = 200;
Console.WriteLine($"[tampered] timestamp:{blockchain.blocks[2].transactions[0].timestamp},from:{blockchain.blocks[2].transactions[0].fromAccount},to:{blockchain.blocks[2].transactions[0].toAccount},amount:{blockchain.blocks[2].transactions[0].amount},isvalid:{blockchain.blocks[2].transactions[0].IsValid()}");
isChainValid = blockchain.IsChainValid(out error);
Console.WriteLine($"blockchain is valid:{isChainValid} {error}");
Console.WriteLine("*********************************************************************************************************************");
Console.WriteLine($"+++ Step 8: Run Blockchain Explorer");
Console.ReadKey();
var chainExplore = ChainHelper.BlockchainExplorer(blockchain);
foreach (var line in chainExplore)
Console.WriteLine(line);
Console.ReadKey();
}
static void Main(string[] args)
{
Console.WriteLine("Begin");
var rsa = RSA.Create();
var key = rsa.ExportParameters(true);
var ZeroHexHash = "";
for (int i = 0; i < 64; i++)
{
ZeroHexHash += "0";
}
Console.WriteLine("Generating key files");
#region Save Public Key
string publicKey = RSAHelper.ExportPublicKeyToPEMFormat(rsa);
FileInfo pem = new FileInfo("public.pem");
if (pem.Exists)
{
pem.Delete();
}
using (var stream = pem.OpenWrite())
using (var writer = new StreamWriter(stream))
writer.Write(publicKey);
#endregion
#region Save Private Key
string privateKey = RSAHelper.ExportPrivateKeyToPfxFormat(rsa);
FileInfo pfx = new FileInfo("private.pfx");
if (pfx.Exists)
{
pfx.Delete();
}
using (var stream = pfx.OpenWrite())
using (var writer = new StreamWriter(stream))
writer.Write(privateKey);
#endregion
Console.WriteLine("Public and private key file saved");
Console.WriteLine("Mining Genesis block");
#region Generate Genesis Block
var transactionContent = new SycoinTransactionContent()
{
Outputs = new TransactionOutput[]
{
new TransactionOutput
{
Amount = 50,
Receiver = publicKey
}
}
};
var contentHash = HashingHelper.HashObject(transactionContent);
var transactions = new SyCoinTransaction[]
{
new SyCoinTransaction
{
Content = transactionContent,
Hash = HashingHelper.ByteArrayToHexDigit(contentHash)
}
};
var blockData = new SyCoinBlock(transactions, 1, ZeroHexHash, 4);
var(nonce, timestamp) = new BlockMiner().Mine(blockData);
blockData.Seal(nonce, timestamp);
PersistedBlock genesisBlock = new PersistedBlock()
{
Header = new BlockHeader(),
Block = blockData
};
FileInfo genesisJson = new FileInfo("genesis.json");
if (genesisJson.Exists)
{
genesisJson.Delete();
}
using (var stream = genesisJson.OpenWrite())
using (var writer = new StreamWriter(stream))
writer.Write(Newtonsoft.Json.JsonConvert.SerializeObject(genesisBlock));
#endregion
Console.WriteLine("Genesis block saved in genesis.json");
Console.ReadLine();
}
public BlockChainService(TransactionPool transactionPool, BlockMiner blockMiner)
{
TransactionPool = transactionPool;
BlockMiner = blockMiner;
}
public BlockChainService()
{
TransactionPool = new TransactionPool();
BlockMiner = new BlockMiner(TransactionPool);
}
