public void TestBlockify()
{
var message = "YELLOW SUBMARINE";
Console.WriteLine("input: {0}", message);
var input = Basic.AsciiToBytes(message);
var blocked = Basic.Aes.Util.Blockify(input, 4, input.Length / 4);
for (var i = 0; i < blocked.GetLength(0); i++)
{
for (var j = 0; j < blocked.GetLength(1); j++)
{
Console.Write((char)blocked[i, j] + " ");
}
Console.Write('\n');
}
var unblocked = Basic.Aes.Util.Unblockify(blocked);
var output = Basic.BytesToAscii(unblocked);
Console.WriteLine("output: {0}", output);
Assert.AreEqual(message, output);
}
public void EncipherText()
{
var message = Basic.AsciiToBytes(Basic.GetFileText(@"..\..\Assets\TestIsEnglishDistributed.txt"));
var key = Basic.AsciiToBytes("ICE");
var cipher = Basic.XorRepeatKey(message, key);
Console.WriteLine(Basic.BytesToHex(cipher));
}
public void TestS2C9()
{
const string message = "YELLOW SUBMARINE";
const string answer = "59454c4c4f57205355424d4152494e4504040404";
var paddedMessage = Basic.BytesToHex(BlockAndStream.Pad(Basic.AsciiToBytes(message), 20));
Console.WriteLine(paddedMessage);
Console.WriteLine(answer);
Assert.AreEqual(answer, paddedMessage);
}
public void TestGetHammingDistance()
{
const string input1 = "this is a test";
const string input2 = "wokka wokka!!!";
const int hammingDistance = 37;
var input1Bytes = Basic.AsciiToBytes(input1);
var input2Bytes = Basic.AsciiToBytes(input2);
var result = Basic.GetHammingDistance(input1Bytes, input2Bytes);
Assert.AreEqual(hammingDistance, result);
}
public void TestS1C5()
{
const string message = "Burning 'em, if you ain't quick and nimble\nI go crazy when I hear a cymbal";
const string target = "0b3637272a2b2e63622c2e69692a23693a2a3c6324202d623d63343c2a26226324272765272a282b2f20430a652e2c652a3124333a653e2b2027630c692b20283165286326302e27282f";
const string key = "ICE";
var messageBytes = Basic.AsciiToBytes(message);
var keyBytes = Basic.AsciiToBytes(key);
var eMessageBytes = Basic.XorRepeatKey(messageBytes, keyBytes);
var eMessage = Basic.BytesToHex(eMessageBytes);
Assert.AreEqual(target, eMessage);
}
public void TestS1C7()
{
const string key = "YELLOW SUBMARINE";
const string path = @"..\..\Assets\S1C7.txt";
var input = Basic.Base64ToBytes(Basic.GetFileText(path));
var keyBytes = Basic.AsciiToBytes(key);
var message = Basic.Aes.RunAes(input, keyBytes, true);
var control = Basic.Aes.MSDecryptAes128Ecb(input, keyBytes);
Console.WriteLine(Basic.BytesToAscii(message));
Assert.AreEqual(message, control);
}
public void TestIsLanguage()
{
const string path = @"..\..\Assets\TestIsEnglishDistributed.txt";
string plaintext;
using (var s = new StreamReader(path))
{
plaintext = s.ReadToEnd().ToLower();
}
var bytes = Basic.AsciiToBytes(plaintext);
List <Tuple <double, byte, char> > matches;
var score = Basic.IsLanguage(bytes, Basic.EnglishCharacterFrequencies, out matches);
var keys = new Dictionary <byte, double>();
Console.WriteLine("-- {0:P} similar to English character distribution --", score);
foreach (var match in matches)
{
var key = Basic.Xor(Basic.AsciiToBytes(match.Item3 + ""), new[] { match.Item2 });
if (keys.ContainsKey(key[0]))
{
keys[key[0]] += match.Item1;
}
else
{
keys.Add(key[0], match.Item1);
}
Console.WriteLine("Score: {0:P} - Char: {1} - Byte: {2} - Key: {3}",
match.Item1, match.Item3,
Basic.BytesToAscii(new[] { match.Item2 }),
Basic.BytesToHex(key));
}
Console.WriteLine("\n-- Possible Keys --");
foreach (var key in keys.OrderByDescending(x => x.Value))
{
Console.WriteLine("score: {0:P} - key: {1}", key.Value, Basic.BytesToHex(new[] { key.Key }));
}
}
public void TestGetRepeatKeySplit()
{
const string message = "0000011111";
Console.WriteLine("Message: {0}\n", message);
var messageB = Basic.AsciiToBytes(message);
var split2 = Basic.GetRepeatKeySplit(messageB, 2);
var split5 = Basic.GetRepeatKeySplit(messageB, 5);
Console.WriteLine("Split on 2key:\n");
foreach (var split in split2)
{
Console.WriteLine(Basic.BytesToAscii(split));
}
Console.WriteLine("\nSplit on 5key:\n");
foreach (var split in split5)
{
Console.WriteLine(Basic.BytesToAscii(split));
}
}
