public static void NewKey(string privateKey, string publicKey, string address, string type)
{
float amount = 0;
if (type == "first")
{
amount = 100;
}
XDocument doc = XDocument.Load(filePath);
XElement element = doc.Element("UserInfo").Element("Keys");
XElement key = new XElement("Key");
key.Add(new XElement("DateCreated", DateTime.Now.ToLongDateString()));
key.Add(new XElement("PrivateKey", privateKey));
key.Add(new XElement("PublicKey", publicKey));
key.Add(new XElement("Address", address));
key.Add(new XElement("TransactionId", CryptoCurrency.ByteArrayToString(CryptoCurrency.StringToSha256(publicKey))));
key.Add(new XElement("Index", element.Elements("Key").Count().ToString()));
List <XAttribute> attribute = new List <XAttribute>()
{
new XAttribute("type", type),
new XAttribute("amount", amount.ToString()),
new XAttribute("isConfirm", "false"),
new XAttribute("unSpend", "true")
};
key.Element("Address").Add(attribute);
element.Add(key);
doc.Save(filePath);
}
public static List <Input> GetTotal(float amount, Span <float> change)
{
XDocument doc = XDocument.Load(filePath);
List <XElement> elements = new List <XElement>(doc.Element("UserInfo").Element("Keys").Elements("Key"));
List <Input> inputs = new List <Input>();
int index = 0;
float total = 0;
while (index < elements.Count && total < amount)
{
XElement temp = elements[index].Element("Address");
XElement privateKey = elements[index].Element("PrivateKey");
if (temp.Attribute("unSpend").Value == "true")
{
if (temp.Attribute("isConfirm").Value == "true")
{
total += float.Parse(temp.Attribute("amount").Value);
inputs.Add(new Input(temp.Value, CryptoCurrency.ByteArrayToIntArray(CryptoCurrency.Sign(temp.Value, CryptoCurrency.StringToByteArray(privateKey.Value)))));
}
}
index++;
}
change[0] = total - amount;
return(inputs);
}
/// <summary>
/// Normal transaction. If return invalid then the transaction is not possible
/// </summary>
public Transaction(List <Output> outputs)
{
float total = 0;
foreach (Output output in outputs)
{
total += output.Amount;
}
float[] change = new float[] { 0 };
Span <float> changeSpan = change.AsSpan();
List <Input> inputs = XmlManager.GetTotal(total, change);
if (change[0] == 0)
{
Inputs = inputs;
Outputs = outputs;
Type = "normal";
}
else
{
byte[] privateKey = CryptoCurrency.Hash32Byte();
byte[] publicKey = CryptoCurrency.GetPublicKey(privateKey);
string address = CryptoCurrency.Sha1(publicKey);
Output changeOutput = new Output(address, CryptoCurrency.ByteArrayToIntArray(publicKey), change[0]);
Type = "change";
XmlManager.NewKey(CryptoCurrency.ByteArrayToString(privateKey), CryptoCurrency.ByteArrayToString(publicKey), address, "change");
outputs.Add(changeOutput);
Inputs = inputs;
Outputs = outputs;
Type = "normal";
}
}
private void NewAddress(object sender, RoutedEventArgs e)
{
byte[] privateKey = CryptoCurrency.Hash32Byte();
byte[] publicKey = CryptoCurrency.GetPublicKey(privateKey);
string address = CryptoCurrency.Sha1(publicKey);
XmlManager.NewKey(CryptoCurrency.ByteArrayToString(privateKey), CryptoCurrency.ByteArrayToString(publicKey), address, "normal");
NewKeyWindow newKeyWindow = new NewKeyWindow(address, CryptoCurrency.ByteArrayToString(publicKey));
newKeyWindow.Show();
}
/// <summary>
/// First transaction amount given is 100 coin
/// </summary>
public Transaction()
{
byte[] privateKey = CryptoCurrency.Hash32Byte();
byte[] publicKey = CryptoCurrency.GetPublicKey(privateKey);
string address = CryptoCurrency.Sha1(publicKey);
Inputs = null;
Outputs = new List <Output>()
{
new Output(address, CryptoCurrency.ByteArrayToIntArray(publicKey), 100)
};
Type = "first";
XmlManager.NewKey(CryptoCurrency.ByteArrayToString(privateKey), CryptoCurrency.ByteArrayToString(publicKey), address, "first");
}
private void AddAddress(object sender, RoutedEventArgs e)
{
string currentAddress = txtAddr.Text;
int[] currentPublicKey = CryptoCurrency.ByteArrayToIntArray(CryptoCurrency.StringToByteArray(txtPubKey.Text));
float currentAmount;
if (!float.TryParse(txtAmount.Text, out currentAmount))
{
MessageBox.Show("Amount must be a float", "Error");
return;
}
Outputs.Add(new Output(currentAddress, currentPublicKey, currentAmount));
lvOutput.ItemsSource = null;
lvOutput.ItemsSource = Outputs;
txtAddr.Text = "";
txtAmount.Text = "";
txtPubKey.Text = "";
}