void RSAwork(BigInteger lenghtP, BigInteger lenghtQ)
{
E = 0; N = 0; FunctionOfEuler = 0; P = 0; Q = 0; TestNumber = 0; testik = "";
testik = GenerateRandomNumbers.GenerateRandomNumber(lenghtP);
P = GenerateRandomNumbers.CheckIt(BigInteger.Parse(testik));
testik = GenerateRandomNumbers.GenerateRandomNumber(lenghtQ);
Q = GenerateRandomNumbers.CheckIt(BigInteger.Parse(testik));
if (P == Q)
{
Q = GenerateRandomNumbers.CheckIt(BigInteger.Parse(testik + 1));
}
N = Q * P;
FunctionOfEuler = (P - 1) * (Q - 1);
testik = GenerateRandomNumbers.GenerateRandomNumber((N.ToString()).Length / 3);
E = GenerateRandomNumbers.CheckIt(BigInteger.Parse(testik));
while ((E == P) && (E == Q))
{
E = GenerateRandomNumbers.CheckIt(E + 1);
}
D = Euclid.ToCountNod(E, FunctionOfEuler);
if (D < 0)
{
D = D + FunctionOfEuler;
}
}
}// 1
public void SendMessageFromSocket(int port, string IP, string operation)
{
byte[] bytes = new byte[1024];
IPHostEntry ipHost = Dns.GetHostEntry(IP);
IPAddress ipAddr = ipHost.AddressList[0];
IPEndPoint ipEndPoint = new IPEndPoint(ipAddr, port);
Socket sender = new Socket(ipAddr.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
string Message = InByte(MessageTextBox.Text);
LEN_OPEN_KEY_CLIENT = MessageTextBox.Text.Length;
sender.Connect(ipEndPoint);
string infstring = "mes ";
byte[] infbyte = Encoding.UTF8.GetBytes(infstring);
int byteinf = sender.Send(infbyte);
string OPENkey_Client = GenerateRandomNumbers.CheckIt((BigInteger.Parse(GenerateRandomNumbers.GenerateRandomNumber(LEN_OPEN_KEY_CLIENT)))).ToString();
byte[] openkeybyte = Encoding.UTF8.GetBytes(OPENkey_Client);
int bytesopenkeyToSend = sender.Send(openkeybyte);
byte[] bytes2 = new byte[1024];
int bytesRec = sender.Receive(bytes2);
string OPENkey_Server = "";
OPENkey_Server += Encoding.UTF8.GetString(bytes2, 0, bytesRec);
string CLOSEkey_Client = GenerateRandomNumbers.CheckIt((BigInteger.Parse(GenerateRandomNumbers.GenerateRandomNumber(LEN_CLOSE_KEY_CLIENT)))).ToString();
string B = BigInteger.ModPow(BigInteger.Parse(OPENkey_Server), BigInteger.Parse(CLOSEkey_Client), BigInteger.Parse(OPENkey_Client)).ToString();
byte[] Bbyte = Encoding.UTF8.GetBytes(B);
int bytesBToSend = sender.Send(Bbyte);
byte[] bytes3 = new byte[1024];
int bytesA = sender.Receive(bytes3);
string A = "";
A += Encoding.UTF8.GetString(bytes3, 0, bytesA);
string KEY = InByte(BigInteger.ModPow(BigInteger.Parse(A), BigInteger.Parse(CLOSEkey_Client), BigInteger.Parse(OPENkey_Client)).ToString());
//string Message = InByte(MessageTextBox.Text);
string output = XOR(Message, KEY);
byte[] Messagebyte = Encoding.UTF8.GetBytes(output);
int bytesMessageToSend = sender.Send(Messagebyte);
//byte[] bytes4 = new byte[1024];
//int bytesAnswer = sender.Receive(bytes4);
// string Answer = "";
// Answer += Encoding.UTF8.GetString(bytes4, 0, bytesAnswer);
//MessageBox.Show(Answer);
sender.Shutdown(SocketShutdown.Both);
sender.Close();
}