private static byte[] GetKey(byte[] bytes, int keySize)
{
var blocks = new byte[keySize][];
var mod = bytes.Length % keySize;
for (var i = 0; i < keySize; i++)
{
var length = mod == 0 || i < mod ? keySize : keySize - 1;
blocks[i] = new byte[length];
for (var j = 0; j < length; j++)
{
blocks[i][j] = bytes[j * keySize + i];
}
}
var key = new byte[keySize];
for (var i = 0; i < keySize; i++)
{
var score = Challenge3.DecodeSingleByteXORCipher(blocks[i]);
key[i] = score.Cipher[0];
}
return(key);
}
public static TextScore FindDecodedText(string[] inputs)
{
return(inputs.Select(i => Challenge3.DecodeSingleByteXORCipher(i)).OrderByDescending(s => s.Score).First());
}