public static Challenge3Result GetBestGuessSingleByteXorKey(string hex)
{
var source =
Challenge1.ByteHexToByteArray(hex);
return(GetBestGuessSingleByteXorKey(source));
}
public static string HexXor(string hexA, string hexB)
{
if (hexA == null)
{
throw new ArgumentNullException("hexA");
}
if (hexB == null)
{
throw new ArgumentNullException("hexB");
}
if (hexA.Length != hexB.Length)
{
throw new ArgumentOutOfRangeException("hexA", "both hex strings must be the same length.");
}
var bytesA = Challenge1.ByteHexToByteArray(hexA);
var bytesB = Challenge1.ByteHexToByteArray(hexB);
var xorBytes = Xor(bytesA, bytesB);
var hexResult = ToHex(xorBytes);
return(hexResult);
}