public ResultItem GetUnencryptedText(byte[] bytes)
{
var tests = new List <ResultItem>();
foreach (byte keyByte in Enumerable.Range(0, 128).Select(c => BitConverter.GetBytes((char)c)[0]))
{
var text = "";
foreach (byte hexByte in bytes)
{
var num = _fixedXOR.ByteXOR(keyByte, hexByte);
text += Convert.ToChar(num);
}
var score = ScoreString(text);
tests.Add(new ResultItem
{
KeyChar = Convert.ToChar(keyByte),
KeyByte = keyByte,
Text = text,
Score = score
});
}
return(tests.OrderByDescending(i => i.Score).First());
}
private List <byte> DecodeForOneLine(byte[] lineBytes, byte[] encryptionKeyBytes)
{
var toReturn = new List <byte>();
for (int j = 0; j < lineBytes.Length; j++)
{
toReturn.Add(_fixedXOR.ByteXOR(lineBytes[j], encryptionKeyBytes[j]));
}
return(toReturn);
}
