// process transaction
public void ProcessPendingTransactions(string address)
{
// create reward transaction for processing node and add block
string KCoinPVKey = "Gs5cyGHUggSKg76veFUrw7v7/yUtzdjYV3fIhRqfSLY=";
string internalPrivateKey = string.Join("", Encoding.UTF8.GetBytes(KCoinPVKey)).Substring(0, 77);
string kcoinPublicKey = PublicKey.GetPublicKeyFromPrivateKey(internalPrivateKey);
string message = $"1:{kcoinPublicKey}:{address}";
CreateTransaction(new Transaction(kcoinPublicKey, address, Reward, Signature.GetSignature(internalPrivateKey, message)));
Block block = new Block(DateTime.Now, GetLastBlock().Hash, PendingTransactions);
AddBlock(block);
CalculateBalance(block);
// reset PendingTransactions list
PendingTransactions = new List <Transaction>();
}
static void Main(string[] args)
{
KCoin.InitializeChain();
if (args.Length == 0)
{
Console.WriteLine("Please Enter Port and ID");
System.Environment.Exit(0);
}
else if (args.Length == 1)
{
Console.WriteLine("Please Enter an ID");
System.Environment.Exit(0);
}
else
{
Port = int.Parse(args[0]);
name = args[1];
}
if (Port > 0)
{
Server = new Server();
Server.Start();
}
bool isRegister = false;
while (isRegister == false)
{
Console.WriteLine($"Enter your private password: "******"", Encoding.UTF8.GetBytes(privateKey)).Substring(0, 77);
publicKey = PublicKey.GetPublicKeyFromPrivateKey(internalPrivateKey);
Console.WriteLine("");
Console.WriteLine($"Your private key: \"{privateKey}\". Please remember it for future use. We won't be able to recover it for you if you lose it.");
Console.WriteLine($"Your public key: \"{publicKey}\".");
isRegister = true;
}
Console.WriteLine("");
Console.WriteLine($"Current user: {name} ({publicKey})");
Console.WriteLine("======================");
Console.WriteLine("1. Connect to server");
Console.WriteLine("2. Add transaction");
Console.WriteLine("3. Show blockchain");
Console.WriteLine("4. Get balance");
Console.WriteLine("5. End program");
Console.WriteLine("======================");
int option = 0;
while (option != 5)
{
switch (option)
{
case 1:
Console.WriteLine("Enter server URL:");
string URL = Console.ReadLine();
Client.Connect($"{URL}/Blockchain");
break;
case 2:
Console.WriteLine("Enter recipient (Public Key):");
string recipient = Console.ReadLine();
Console.WriteLine("Enter amount:");
string amount = Console.ReadLine();
// create new transaction
string message = $"{amount}:{publicKey}:{recipient}";
string signature = Signature.GetSignature(internalPrivateKey, message);
KCoin.CreateTransaction(new Transaction(publicKey, recipient, int.Parse(amount), Signature.GetSignature(internalPrivateKey, message)));
// process transactions
KCoin.ProcessPendingTransactions(publicKey);
// send data to connected
Client.Broadcast(JsonConvert.SerializeObject(KCoin));
break;
case 3:
Console.WriteLine(JsonConvert.SerializeObject(KCoin, Formatting.Indented));
break;
case 4:
Console.WriteLine("Enter account name: ");
string address = Console.ReadLine();
int balance = KCoin.GetBalance(address);
if (balance == -1)
{
Console.WriteLine("Account does not exist.");
}
else
{
Console.WriteLine($"Account({address}) Balance: {balance}");
}
break;
}
Console.WriteLine("Select an option: ");
option = int.Parse(Console.ReadLine());
}
Client.Close();
}