private static void EncryptDecryptPlainText(Options ops, ICypher cypher)
{
string originalText = File.ReadAllText(ops.SourceFilePath);
EndOfLine endOfLine;
if (!AlphabeticCypher.IsTextPlain(originalText, out endOfLine))
{
throw new InvalidOperationException("Text is not considered plain text");
}
cypher.Alphabet = AlphabeticCypher.GetPlainTextAlphabet(endOfLine);
if (ops.Action == Action.Encrypt)
{
string plainText = originalText;
string cryptoText = cypher.Encrypt(plainText, ops.EncryptionKey);
File.WriteAllText(ops.TargetFilePath, cryptoText);
}
else
{
string cryptoText = originalText;
string plainText = cypher.Decrypt(cryptoText, ops.EncryptionKey);
File.WriteAllText(ops.TargetFilePath, plainText);
}
}
public void AutoKeyCypherWikipedia()
{
// Check Wikipedia
var tc = new Blaze.Cryptography.Classics.AutokeyCypher();
tc.Alphabet = AlphabeticCypher.GetSimpleAlphabet(true, false, false);
string k = "QUEENLY";
string plain1 = "ATTACKATDAWN";
string cypher1 = tc.Encrypt(plain1, k);
Assert.AreEqual("QNXEPVYTWTWP", cypher1);
string decypher1 = tc.Decrypt(cypher1, k);
Assert.AreEqual(plain1, decypher1);
string k2 = "KILT";
string plain2 = "MEETATTHEFOUNTAIN";
string cypher2 = tc.Encrypt(plain2, k2);
Assert.AreEqual("WMPMMXXAEYHBRYOCA", cypher2);
string decypher2 = tc.Decrypt(cypher2, k2);
Assert.AreEqual(plain2, decypher2);
}
public void ColumnarTranspositionCypherCustom()
{
var cypher = new ColumnarTranspositionCypher();
cypher.Alphabet = AlphabeticCypher.GetSimpleAlphabet(true, false, false);
string[] testStrings =
{
"TIMESUP",
"WEMUSTATTACKATDAWN",
"ATTACKATDAWN",
"WEAREDISCOVEREDFLEEATONCE"
};
bool success = true;
Log.Info("Without fill");
string[] keys =
{
"DACB",
"AKAB",
"KEY",
"ZEBRAS"
};
using (Log.StartIndentScope())
{
foreach (string keyStr in keys)
{
byte[] key = keyStr.ToByteArray();
using (Log.StartIndentScope())
{
foreach (string testStr in testStrings)
{
success &= Utils.WrappedTest(() =>
{
byte[] testArr = testStr.ToByteArray();
byte[] cypherArr = cypher.EncryptClassic(testArr, key);
string plainStr = cypher.DecryptClassic(cypherArr, key)
.ToTextString();
string cypherStr = cypherArr.ToTextString();
Log.Info($"Plain text: {testStr}");
Log.Info($"Cypher text: {cypherStr}");
Log.Info($"Decypher text: {plainStr}");
return(plainStr == testStr);
}, Log);
}
}
}
}
Assert.IsTrue(success, "One or more cases failed");
}
public void TranspositionBasicTest()
{
var cypher = new TranspositionCypher();
cypher.Alphabet = AlphabeticCypher.GetSimpleAlphabet(true, false, false);
string[] testStrings =
{
"WEMUSTATTACKATDAWN",
"ATTACKATDAWN",
"TIMESUP"
};
bool success = true;
Log.Info("Without fill");
using (Log.StartIndentScope())
foreach (string testStr in testStrings)
{
success &= Utils.WrappedTest(() =>
{
string cypherStr = cypher.Encrypt(testStr.ToByteArray(), 4).ToTextString();
string plainStr = cypher.Decrypt(cypherStr.ToByteArray(), 4).ToTextString();
Log.Info($"Plain text: {testStr}");
Log.Info($"Cypher text: {cypherStr}");
Log.Info($"Decypher text: {plainStr}");
return(plainStr == testStr);
}, Log);
}
byte[] key = "KEY".ToByteArray();
//With fill
Log.Info("With fill");
using (Log.StartIndentScope())
foreach (string testStr in testStrings)
{
success &= Utils.WrappedTest(() =>
{
string cypherStr = cypher.EncryptWithFill(testStr.ToByteArray(), key).ToTextString();
string plainStr = cypher.DecryptWithFill(cypherStr.ToByteArray(), key).ToTextString();
Log.Info($"Plain text: {testStr}");
Log.Info($"Cypher text: {cypherStr}");
Log.Info($"Decypher text: {plainStr}");
return(plainStr == testStr);
}, Log);
}
Assert.IsTrue(success, "One or more cases failed");
}
protected List <EncryptTest> GetEncryptions()
{
var res = new ListConstruct <EncryptTest>
{
{ new NullCypher(), "Null Cypher" },
{ new AutokeyCypher(), "AutoKey Cypher", TestType.All },
{ new BifidCypher(), "Bifid Cypher", TestType.Full | TestType.Xor },
{ new CaesarCypher(), "Caesar Cypher" },
{ new Vigenere(), "Vigenere Cypher" },
{ new HillCypher(), "Hill Cypher", TestType.All },
{ new Rot13(), "Rot 13", AlphabeticCypher.GetSimpleAlphabet(true, false, false), ROT13_TEXTS },
{ new ShuffleCypher(), "Shuffle Cypher", TestType.All },
{ new StreamCypher(), "Stream Cypher" },
{ new SaltedCypher(new StreamCypher()), "Salted Cypher", TestType.All },
{ new TranspositionCypher(), "Transposition Cypher", TestType.All },
{ new ColumnarTranspositionCypher(), "Columnar Transposition Cypher", TestType.All },
{ new FibonacciCypher(), "Fibonacci Cypher" },
{ new FibonacciCypherV2(), "Fibonacci Cypher V2" },
{ new FibonacciCypherV3(), "Fibonacci Cypher V3" },
{ new RandomBijection(new NullCypher()), "RBIJ on Null", TestType.NotXor },
{ new RandomBijection(new Vigenere()), "RBIJ on Vigenere", TestType.NotXor },
{ new RandomBijection(new FibonacciCypher()), "RBIJ on Fibonacci", TestType.NotXor },
{ new RandomBijection(new FibonacciCypherV3()), "RBIJ on FibonaccyV3", TestType.NotXor },
{ new RandomBijection(new StreamCypher()), "RBIJ on Stream", TestType.NotXor },
{
new ChainCypher(
typeof(FibonacciCypher),
typeof(StreamCypher),
typeof(FibonacciCypherV3)),
"Chain1",
TestType.Full
},
};
return(res);
}
public void TestCheckPlainText()
{
var r = new Random(0);
string plainEolWindows = PlainText;
string plainEolUnix = PlainText.Replace("\r\n", "\n");
string plainEolMac = PlainText.Replace("\r\n", "\r");
string noEol = PlainText.Replace("\r\n", "");
byte[] randBytes = new byte[256];
r.NextBytes(randBytes);
string randText = randBytes.ToTextString();
var tests = new[]
{
new { Name = "Windows", Text = plainEolWindows, Plain = true, Eol = EndOfLine.Mixed },
new { Name = "Unix", Text = plainEolUnix, Plain = true, Eol = EndOfLine.LineFeed },
new { Name = "Mac", Text = plainEolMac, Plain = true, Eol = EndOfLine.CarriageReturn },
new { Name = "None", Text = noEol, Plain = true, Eol = EndOfLine.None },
new { Name = "Binary", Text = randText, Plain = false, Eol = EndOfLine.None },
};
bool success = true;
var errs = new List <string>();
foreach (var t in tests)
{
bool currentPased = Utils.WrappedTest(() =>
{
using (Log.StartIndentScope())
{
EndOfLine eol;
bool isPlain = AlphabeticCypher.IsTextPlain(t.Text, out eol);
return(isPlain == t.Plain && eol == t.Eol);
}
}, Log);
if (!currentPased)
{
Log.Error($"Testing {t.Name} failed.");
errs.Add(t.Name);
}
success &= currentPased;
}
Assert.IsTrue(success, $"Following tests failed: {string.Join(",", errs)}");
}