[AYUDA] Una cosa super simple de Clases

Código ActionScript :

/**
* Encrypts and decrypts an alleged RC4 hash.
* @author Mika Palmu
* @version 1.0
*
* Orginal Flash port by:
* Gabor Penoff - http://www.fns.hu
* Email: [email protected]
*/
 
class rc4 {
 
   /**
   * Variables
   * @exclude
   */
   private static var sbox:Array = new Array(255);
   private static var mykey:Array = new Array(255);
 
   /**
   * Encrypts a string with the specified key.
   */
   public static function encrypt(src:String, key:String):String {
      var mtxt:Array = strToChars(src);
      var mkey:Array = strToChars(key);
      var result:Array = calculate(mtxt, mkey);
      return charsToHex(result);
   }
 
   /**
   * Decrypts a string with the specified key.
   */
   public static function decrypt(src:String, key:String):String {
      var mtxt:Array = hexToChars(src);
      var mkey:Array = strToChars(key);
      var result:Array = calculate(mtxt, mkey);
      return charsToStr(result);
   }
 
   /**
   * Private methods.
   */
   private static function initialize(pwd:Array) {
      var b:Number = 0;
      var tempSwap:Number;
      var intLength:Number = pwd.length;
      for (var a:Number = 0; a <= 255; a++) {
         mykey[a] = pwd[(a%intLength)];
         sbox[a] = a;
      }
      for (var a:Number=0; a<=255; a++) {
         b = (b+sbox[a]+mykey[a]) % 256;
         tempSwap = sbox[a];
         sbox[a] = sbox[b];
         sbox[b] = tempSwap;
      }
   }
   private static function calculate(plaintxt:Array, psw:Array):Array {
      initialize(psw);
      var i:Number = 0; var j:Number = 0;
      var cipher:Array = new Array();
      var k:Number, temp:Number, cipherby:Number;
      for (var a:Number = 0; a<plaintxt.length; a++) {
         i = (i+1) % 256;
         j = (j+sbox[i])%256;
         temp = sbox[i];
         sbox[i] = sbox[j];
         sbox[j] = temp;
         var idx:Number = (sbox[i]+sbox[j]) % 256;
         k = sbox[idx];
         cipherby = plaintxt[a]^k;
         cipher.push(cipherby);
      }
      return cipher;
   }
   private static function charsToHex(chars:Array):String {
      var result:String = new String("");
      var hexes:Array = new Array("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f");
      for (var i:Number = 0; i<chars.length; i++) {
         result += hexes[chars[i] >> 4] + hexes[chars[i] & 0xf];
      }
      return result;
   }
   private static function hexToChars(hex:String):Array {
      var codes:Array = new Array();
      for (var i:Number = (hex.substr(0, 2) == "0x") ? 2 : 0; i<hex.length; i+=2) {
         codes.push(parseInt(hex.substr(i, 2), 16));
      }
      return codes;
   }
   private static function charsToStr(chars:Array):String {
      var result:String = new String("");
      for (var i:Number = 0; i<chars.length; i++) {
         result += String.fromCharCode(chars[i]);
      }
      return result;
   }
   private static function strToChars(str:String):Array {
      var codes:Array = new Array();
      for (var i:Number = 0; i<str.length; i++) {
         codes.push(str.charCodeAt(i));
      }
      return codes;
   }
 
}

Código ActionScript :

import rc4;
b1.onPress = function(){
   t2.text = rc4.encrypt(t1.text, "hola");
}

nasho escribió:

import rc4;
b1.onPress = function(){
   t2.text = rc4.encrypt(t1.text, "hola");
}