public static NetXteaEncryption[] TestSRPWithRandomness(NetPeer peer)
{
int parallelism = (int)Math.Max(1, Environment.ProcessorCount * 0.75);
var xtea = new NetXteaEncryption[2000 + 1000 * parallelism];
Console.WriteLine(
$"Testing SRP helper {xtea.Length} times (degree of parallelism: {parallelism})...");
Parallel.For(
0,
xtea.Length,
new ParallelOptions {
MaxDegreeOfParallelism = parallelism
},
(i) =>
{
var salt = NetSRP.CreateRandomSalt();
var x = NetSRP.ComputePrivateKey("user", "password", salt);
var v = NetSRP.ComputeServerVerifier(x);
//Console.WriteLine("v = " + NetUtility.ToHexString(v));
var a = NetSRP.CreateRandomEphemeral(); // NetUtility.ToByteArray("393ed364924a71ba7258633cc4854d655ca4ec4e8ba833eceaad2511e80db2b5");
var A = NetSRP.ComputeClientEphemeral(a);
//Console.WriteLine("A = " + NetUtility.ToHexString(A));
var b = NetSRP.CreateRandomEphemeral(); // NetUtility.ToByteArray("cc4d87a90db91067d52e2778b802ca6f7d362490c4be294b21b4a57c71cf55a9");
var B = NetSRP.ComputeServerEphemeral(b, v);
//Console.WriteLine("B = " + NetUtility.ToHexString(B));
var u = NetSRP.ComputeU(A, B);
//Console.WriteLine("u = " + NetUtility.ToHexString(u));
var Ss = NetSRP.ComputeServerSessionValue(A, v, u, b);
//Console.WriteLine("Ss = " + NetUtility.ToHexString(Ss));
var Sc = NetSRP.ComputeClientSessionValue(B, x, u, a);
//Console.WriteLine("Sc = " + NetUtility.ToHexString(Sc));
if (Ss != Sc)
{
throw new LidgrenException("SRP non matching session values!");
}
xtea[i] = NetSRP.CreateEncryption(peer, Ss);
});
return(xtea);
}
public void TestNetSRP()
{
byte[] salt = NetSRP.CreateRandomSalt();
byte[] x = NetSRP.ComputePrivateKey("user", "password", salt);
byte[] v = NetSRP.ComputeServerVerifier(x);
//Console.WriteLine("v = " + NetUtility.ToHexString(v));
byte[] a = NetSRP
.CreateRandomEphemeral(); // NetUtility.ToByteArray("393ed364924a71ba7258633cc4854d655ca4ec4e8ba833eceaad2511e80db2b5");
byte[] A = NetSRP.ComputeClientEphemeral(a);
//Console.WriteLine("A = " + NetUtility.ToHexString(A));
byte[] b = NetSRP
.CreateRandomEphemeral(); // NetUtility.ToByteArray("cc4d87a90db91067d52e2778b802ca6f7d362490c4be294b21b4a57c71cf55a9");
byte[] B = NetSRP.ComputeServerEphemeral(b, v);
//Console.WriteLine("B = " + NetUtility.ToHexString(B));
byte[] u = NetSRP.ComputeU(A, B);
//Console.WriteLine("u = " + NetUtility.ToHexString(u));
byte[] Ss = NetSRP.ComputeServerSessionValue(A, v, u, b);
//Console.WriteLine("Ss = " + NetUtility.ToHexString(Ss));
byte[] Sc = NetSRP.ComputeClientSessionValue(B, x, u, a);
//Console.WriteLine("Sc = " + NetUtility.ToHexString(Sc));
if (Ss.Length != Sc.Length)
{
Assert.Fail("SRP non matching lengths!");
}
for (int j = 0; j < Ss.Length; j++)
{
if (Ss[j] != Sc[j])
{
Assert.Fail("SRP non matching session values!");
}
}
var test = NetSRP.CreateEncryption(Peer, Ss);
}
public static void Run(NetPeer peer)
{
//
// Test encryption
//
List <INetEncryption> algos = new List <INetEncryption>();
algos.Add(new NetXorEncryption("TopSecret"));
algos.Add(new NetXtea("TopSecret"));
algos.Add(new NetAESEncryption("TopSecret"));
algos.Add(new NetRC2Encryption("TopSecret"));
algos.Add(new NetDESEncryption("TopSecret"));
algos.Add(new NetTripleDESEncryption("TopSecret"));
foreach (var algo in algos)
{
NetOutgoingMessage om = peer.CreateMessage();
om.Write("Hallon");
om.Write(42);
om.Write(5, 5);
om.Write(true);
om.Write("kokos");
int trueLen = om.LengthBits;
om.Encrypt(algo);
// convert to incoming message
NetIncomingMessage im = Program.CreateIncomingMessage(om.PeekDataBuffer(), om.LengthBits);
im.Decrypt(algo);
if (im.LengthBits != trueLen)
{
throw new NetException("Length fail");
}
if (im.ReadString() != "Hallon")
{
throw new NetException("fail");
}
if (im.ReadInt32() != 42)
{
throw new NetException("fail");
}
if (im.ReadInt32(5) != 5)
{
throw new NetException("fail");
}
if (im.ReadBoolean() != true)
{
throw new NetException("fail");
}
if (im.ReadString() != "kokos")
{
throw new NetException("fail");
}
Console.WriteLine(algo.GetType().Name + " encryption verified");
}
for (int i = 0; i < 100; i++)
{
byte[] salt = NetSRP.CreateRandomSalt();
byte[] x = NetSRP.ComputePrivateKey("user", "password", salt);
byte[] v = NetSRP.ComputeServerVerifier(x);
//Console.WriteLine("v = " + NetUtility.ToHexString(v));
byte[] a = NetSRP.CreateRandomEphemeral(); // NetUtility.ToByteArray("393ed364924a71ba7258633cc4854d655ca4ec4e8ba833eceaad2511e80db2b5");
byte[] A = NetSRP.ComputeClientEphemeral(a);
//Console.WriteLine("A = " + NetUtility.ToHexString(A));
byte[] b = NetSRP.CreateRandomEphemeral(); // NetUtility.ToByteArray("cc4d87a90db91067d52e2778b802ca6f7d362490c4be294b21b4a57c71cf55a9");
byte[] B = NetSRP.ComputeServerEphemeral(b, v);
//Console.WriteLine("B = " + NetUtility.ToHexString(B));
byte[] u = NetSRP.ComputeU(A, B);
//Console.WriteLine("u = " + NetUtility.ToHexString(u));
byte[] Ss = NetSRP.ComputeServerSessionValue(A, v, u, b);
//Console.WriteLine("Ss = " + NetUtility.ToHexString(Ss));
byte[] Sc = NetSRP.ComputeClientSessionValue(B, x, u, a);
//Console.WriteLine("Sc = " + NetUtility.ToHexString(Sc));
if (Ss.Length != Sc.Length)
{
throw new NetException("SRP non matching lengths!");
}
for (int j = 0; j < Ss.Length; j++)
{
if (Ss[j] != Sc[j])
{
throw new NetException("SRP non matching session values!");
}
}
var test = NetSRP.CreateEncryption(Ss);
}
Console.WriteLine("Message encryption OK");
}
public static void Run(NetPeer peer)
{
//
// Test XTEA
//
NetXtea xtea = new NetXtea("TopSecret");
byte[] original = new byte[16];
NetRandom.Instance.NextBytes(original);
byte[] encrypted = new byte[original.Length];
xtea.EncryptBlock(original, 0, encrypted, 0);
xtea.EncryptBlock(original, 8, encrypted, 8);
byte[] decrypted = new byte[original.Length];
xtea.DecryptBlock(encrypted, 0, decrypted, 0);
xtea.DecryptBlock(encrypted, 8, decrypted, 8);
// compare!
for (int i = 0; i < original.Length; i++)
{
if (original[i] != decrypted[i])
{
throw new NetException("XTEA fail!");
}
}
Console.WriteLine("XTEA OK");
NetOutgoingMessage om = peer.CreateMessage();
om.Write("Hallon");
om.Write(42);
om.Write(5, 5);
om.Write(true);
om.Write("kokos");
om.Encrypt(xtea);
// convert to incoming message
NetIncomingMessage im = Program.CreateIncomingMessage(om.PeekDataBuffer(), om.LengthBits);
im.Decrypt(xtea);
if (im.ReadString() != "Hallon")
{
throw new NetException("fail");
}
if (im.ReadInt32() != 42)
{
throw new NetException("fail");
}
if (im.ReadInt32(5) != 5)
{
throw new NetException("fail");
}
if (im.ReadBoolean() != true)
{
throw new NetException("fail");
}
if (im.ReadString() != "kokos")
{
throw new NetException("fail");
}
for (int i = 0; i < 100; i++)
{
byte[] salt = NetSRP.CreateRandomSalt();
byte[] x = NetSRP.ComputePrivateKey("user", "password", salt);
byte[] v = NetSRP.ComputeServerVerifier(x);
//Console.WriteLine("v = " + NetUtility.ToHexString(v));
byte[] a = NetSRP.CreateRandomEphemeral(); // NetUtility.ToByteArray("393ed364924a71ba7258633cc4854d655ca4ec4e8ba833eceaad2511e80db2b5");
byte[] A = NetSRP.ComputeClientEphemeral(a);
//Console.WriteLine("A = " + NetUtility.ToHexString(A));
byte[] b = NetSRP.CreateRandomEphemeral(); // NetUtility.ToByteArray("cc4d87a90db91067d52e2778b802ca6f7d362490c4be294b21b4a57c71cf55a9");
byte[] B = NetSRP.ComputeServerEphemeral(b, v);
//Console.WriteLine("B = " + NetUtility.ToHexString(B));
byte[] u = NetSRP.ComputeU(A, B);
//Console.WriteLine("u = " + NetUtility.ToHexString(u));
byte[] Ss = NetSRP.ComputeServerSessionValue(A, v, u, b);
//Console.WriteLine("Ss = " + NetUtility.ToHexString(Ss));
byte[] Sc = NetSRP.ComputeClientSessionValue(B, x, u, a);
//Console.WriteLine("Sc = " + NetUtility.ToHexString(Sc));
if (Ss.Length != Sc.Length)
{
throw new NetException("SRP non matching lengths!");
}
for (int j = 0; j < Ss.Length; j++)
{
if (Ss[j] != Sc[j])
{
throw new NetException("SRP non matching session values!");
}
}
var test = NetSRP.CreateEncryption(Ss);
}
Console.WriteLine("Message encryption OK");
}