public void takeClient()
{
NetworkStream stream = client.GetStream();
StreamReader reader = new StreamReader(stream);
StreamWriter writer = new StreamWriter(stream);
writer.WriteLine("Client Connected");
writer.Flush();
String line = null;
while ((line = reader.ReadLine()).Length != 0)
{
string keyencrypted = null;
string IV = null;
string filencrypted = null;
keyencrypted = reader.ReadLine(); // received encrypted key
IV = reader.ReadLine();
filencrypted = reader.ReadLine(); // received encrypted file
byte[] receiveFile = Convert.FromBase64String(filencrypted);
byte[] sessionkey = Convert.FromBase64String(keyencrypted);
byte[] sessioniv = Convert.FromBase64String(IV);
string IVfile = asy_crypt.DecryptData(sessioniv, "PrivateKey.xml");
string keyfile = asy_crypt.DecryptData(sessionkey, "PrivateKey.xml");
writer.WriteLine("received");
sessionkey = Convert.FromBase64String(keyfile);
byte[] file_decrypted = sy_C.dycryptFile(receiveFile, sessionkey, Convert.FromBase64String(IVfile));
Server.GUI.show("file recerived");
File.WriteAllBytes(line, file_decrypted);
Server.GUI.show("Recived from client" + ((IPEndPoint)client.Client.RemoteEndPoint).Port.ToString() + " :" + line);
writer.Flush();
}
Server.GUI.show("Client " + ((IPEndPoint)client.Client.RemoteEndPoint).Port.ToString() + "disconnected");
client.Close();
}
protected void DecryptCommand_Click(object sender, EventArgs e)
{
// Check for encryption key
if (!File.Exists(KeyFileName))
{
Response.Write("Missing encryption key. Please generate key!");
}
try
{
byte[] data = Convert.FromBase64String(EncryptedDataText.Text);
ClearDataText.Text = AsymmetricEncryptionUtility.DecryptData(data, KeyFileName);
}
catch
{
Response.Write("Unable to decrypt data!");
}
}