public static void Main(string[] args)
{
Console.OutputEncoding = Encoding.Unicode;
byte[] key = { 1, 2, 3, 4, 5 };
var dataText = @"Hello Greg!";
var data = Encoding.Unicode.GetBytes(dataText);
var cipher = RC4.Encrypt(key, data);
var cipherText = Encoding.Unicode.GetString(cipher.ToArray());
var retrieved = RC4.Decrypt(key, cipher);
var retrievedText = Encoding.Unicode.GetString(retrieved.ToArray());
Console.WriteLine($"Data text : {dataText}");
Console.WriteLine($"Cipher text : {cipherText}");
Console.WriteLine($"Cipher bytes : {PrintByteArray(cipher.ToArray())}");
Console.WriteLine($"Retrieved text: {retrievedText}");
Console.WriteLine($"Period of first pseudo-random byte: {RC4.GetKeyInitializationPeriod(key, 1)}");
Console.WriteLine($"Period of second pseudo-random byte: {RC4.GetKeyInitializationPeriod(key, 2)}");
Console.ReadKey();
}