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using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using Org.Mentalis.Security.Cryptography;
using NUnit.Framework;
namespace DotNetOpenId.Test {
public static class DHTestUtil {
public static string Test1() {
DiffieHellman dh1 = DiffieHellmanUtil.CreateDiffieHellman();
DiffieHellman dh2 = DiffieHellmanUtil.CreateDiffieHellman();
string secret1 = Convert.ToBase64String(dh1.DecryptKeyExchange(dh2.CreateKeyExchange()));
string secret2 = Convert.ToBase64String(dh2.DecryptKeyExchange(dh1.CreateKeyExchange()));
Assert.AreEqual(secret1, secret2, "Secret keys do not match for some reason.");
return secret1;
}
}
[TestFixture]
public class DiffieHellmanUtilTests {
[Test]
public void Test() {
string s1 = DHTestUtil.Test1();
string s2 = DHTestUtil.Test1();
Assert.AreNotEqual(s1, s2, "Secret keys should NOT be the same.");
}
[Test, Explicit("Test is slow.")]
public void TestPublic() {
StreamReader sr = new StreamReader(@"..\..\src\DotNetOpenId.Test\dhpriv.txt");
try {
string line;
while ((line = sr.ReadLine()) != null) {
string[] parts = line.Trim().Split(' ');
byte[] x = Convert.FromBase64String(parts[0]);
DiffieHellmanManaged dh = new DiffieHellmanManaged(DiffieHellmanUtil.DEFAULT_MOD, DiffieHellmanUtil.DEFAULT_GEN, x);
byte[] pub = dh.CreateKeyExchange();
byte[] y = Convert.FromBase64String(parts[1]);
if (y[0] == 0 && y[1] <= 127)
y.CopyTo(y, 1);
Assert.AreEqual(y, Convert.FromBase64String(DiffieHellmanUtil.UnsignedToBase64(pub)), line);
}
} finally {
sr.Close();
}
}
}
}
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