static void gen_keys()
{
Random random = new Random();
a_p = 2;
A_p = g.Pow(a_p).Mod(q);
}
static void Main(string[] args)
{
string server = "127.0.0.1";
Int32 port = 13000;
TcpClient client = new TcpClient(server, port);
NetworkStream stream = client.GetStream();
g = new Org.BouncyCastle.Math.BigInteger(2.ToString());
p = new Org.BouncyCastle.Math.BigInteger(31.ToString());
q = new Org.BouncyCastle.Math.BigInteger(5.ToString());
int n = Int32.Parse(args[0]);
gen_keys();
Org.BouncyCastle.Math.BigInteger[] P = req_keys(n - 1);
int[] V = gen_v(n - 1);
//Start time
DateTime now = DateTime.Now;
Console.WriteLine("Strat Second: {0}", now.Millisecond);
Random random = new Random();
int s = 4;
//int s = 29;
Org.BouncyCastle.Math.BigInteger U = (g.Pow(s)).Mod(p);
for (int i = 0; i < n - 1; ++i)
{
U = U.Multiply((P[i].Pow(V[i])).Mod(p)).Mod(p);
}
byte[] bytes;
bytes = new byte[204800];
bytes = Encoding.UTF8.GetBytes(U.ToString());
stream.Write(bytes);
stream.Flush();
bytes = new byte[64];
stream.Read(bytes, 0, bytes.Length);
int c = Int32.Parse(Encoding.UTF8.GetString(bytes));
int v_p = c;
for (int i = 0; i < n - 1; ++i)
{
v_p = v_p ^ V[i];
}
string V_str = v_p + "|";
for (int i = 0; i < n - 1; ++i)
{
V_str += V[i] + "|";
}
string P_str = A_p.ToString() + "|";
for (int i = 0; i < n - 1; ++i)
{
P_str += P[i] + "|";
}
Org.BouncyCastle.Math.BigInteger a_p_big = new Org.BouncyCastle.Math.BigInteger(a_p.ToString());
Org.BouncyCastle.Math.BigInteger v_p_big = new Org.BouncyCastle.Math.BigInteger(v_p.ToString());
Org.BouncyCastle.Math.BigInteger s_big = new Org.BouncyCastle.Math.BigInteger(s.ToString());
Org.BouncyCastle.Math.BigInteger r_big = (s_big.Add((a_p_big.Multiply(v_p_big)).Negate())).Mod(q);
//int r = (s - ((a_p * v_p) % 31));
//int r = Int32.Parse(r_big.ToString());
string r_str = r_big.ToString();
string msg = V_str + P_str + r_str;
bytes = new byte[204800];
bytes = Encoding.UTF8.GetBytes(msg);
stream.Write(bytes);
stream.Flush();
}
static void Main(string[] args)
{
int n = Int32.Parse(args[0]);
g = new Org.BouncyCastle.Math.BigInteger(2.ToString());
p = new Org.BouncyCastle.Math.BigInteger(31.ToString());
q = new Org.BouncyCastle.Math.BigInteger(5.ToString());
TcpListener server = null;
Int32 port = 13000;
IPAddress localAddr = IPAddress.Parse("127.0.0.1");
// TcpListener server = new TcpListener(port);
server = new TcpListener(localAddr, port);
// Start listening for client requests.
server.Start();
// Buffer for reading data
TcpClient client = server.AcceptTcpClient();
NetworkStream stream = client.GetStream();
byte[] bytes;
bytes = new byte[204800];
stream.Read(bytes, 0, bytes.Length);
string U = Encoding.UTF8.GetString(bytes);
Random random = new Random();
int c = random.Next(1, 4);
bytes = new byte[64];
bytes = Encoding.UTF8.GetBytes(c.ToString());
stream.Write(bytes);
stream.Flush();
bytes = new byte[204800];
stream.Read(bytes, 0, bytes.Length);
string msg = Encoding.UTF8.GetString(bytes);
string[] temp_split = msg.Split("|");
int[] V = new int[n];
int c0 = 0;
for (int i = 0; i < n; ++i)
{
V[i] = Int32.Parse(temp_split[i]);
c0 = c0 ^ V[i];
}
Org.BouncyCastle.Math.BigInteger[] P = new Org.BouncyCastle.Math.BigInteger[n];
for (int i = 0; i < n; ++i)
{
P[i] = new Org.BouncyCastle.Math.BigInteger(temp_split[n + i]);
}
int r = Int32.Parse(temp_split[2 * n]);
if (c0 == c)
{
Console.WriteLine("1st verification PASS");
}
else
{
Console.WriteLine("1st verification FAIL");
}
Org.BouncyCastle.Math.BigInteger U0 = (g.Pow(r)).Mod(p);
for (int i = 0; i < n; ++i)
{
U0 = U0.Multiply((P[i].Pow(V[i])).Mod(p)).Mod(p);
}
Console.WriteLine(U);
Console.WriteLine(U0);
string U1 = U0.ToString();
bool flag = true;
for (int i = 0; i < U1.Length; ++i)
{
if (U1[i] != U[i])
{
Console.WriteLine("2nd verification FAIL");
flag = false;
break;
}
}
if (flag)
{
Console.WriteLine("2nd verification PASS");
}
//End time
DateTime now = DateTime.Now;
Console.WriteLine("Strat Second: {0}", now.Millisecond);
}