public static Dictionary <string, string> Attack(byte[] cipher)
{
var outputs = new Dictionary <string, string>();
foreach (byte key in Enumerable.Range(0, 127))
{
var expandedKey = Key.Expand(key, cipher);
var outputBytes = Xor.CompareByteArrays(cipher, expandedKey);
outputs.Add(key.ToString(), Encoding.ASCII.GetString(outputBytes));
}
return(outputs);
}
public static DecryptionResult AnalyzeResult(List <Dictionary <string, string> > bruteForceResults, byte[] cipherBytes)
{
var fullKey = AnalyzeKey(bruteForceResults);
// Use key!
var expandedKey = Key.Expand(fullKey, cipherBytes);
var plainTextAsBytes = Xor.CompareByteArrays(cipherBytes, expandedKey);
var plaintext = Encoding.UTF8.GetString(plainTextAsBytes);
return(new DecryptionResult
{
RepeatingKey = Encoding.ASCII.GetString(fullKey),
DecryptedText = plaintext
});
}
