Lack of memory

[ilay83]

Your prog have much time to resolve this script(decryption from Base84)
if crypted file more 20 kb


var cryptof = getAdditionalFile("test.swf");
f = new Folder("demo");
outputfolder = f.path;

var fp = new FileStream(cryptof,"r");
var input = fp.readString();
fp.close();
function asd(input){

var keyStr = "ABCDEFGHIJKLMNOP" +
"QRSTUVWXYZabcdef" +
"ghijklmnopqrstuv" +
"wxyz0123456789+/" +
"=";
var output = "";
var chr1="";
var chr2="";
var chr3 = "";
var enc1="";
var enc2="";
var enc3="";
var enc4 = "";
var i = 0;
// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
/*var base64test = new RegExp (/[^A-Za-z0-9\+\/\=]/g);
if (base64test.exec(input)){
Dialogs.msgBox("There were invalid base64 characters in the input text. Valid base64 characters are A-Z, a-z, 0-9 and Expect errors in decoding.","Alert", 0);}
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");*/
///
do {
enc1 = keyStr.indexOf(input.charAt(i++));
enc2 = keyStr.indexOf(input.charAt(i++));
enc3 = keyStr.indexOf(input.charAt(i++));
enc4 = keyStr.indexOf(input.charAt(i++));

chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;

output = output + String.fromCharCode(chr1);

if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}

chr1 = chr2 = chr3 = "";
enc1 = enc2 = enc3 = enc4 = "";

} while (i < input.length);

return output;
}
asd(input)
trace(asd(input))
trace(input)
var htmlfile = outputfolder + "\\" + "test2.swf";
//var htmlfile = "test2.swf";
fp1 = new FileStream(htmlfile,"w");
uncr=asd(input);
fp1.writeString(uncr);
fp1.close();

Thanx alot

[SWFKit]

Please try the following

function Base64()
{
this.keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

/**
 * Read a byte from the input string or file stream
 */
function readByte(input)
{
var ch = input.get();
if (input.eof) return NaN;

return ch;
}

/**
 * Encode the input string or file stream, returns a stringstream
 */
   function encode(input) 
   {
   var output = new StringStream;
    var chr1, chr2, chr3 ;
    var enc1, enc2, enc3, enc4;

    do 
    {
       chr1 = this.readByte(input);
        chr2 = this.readByte(input);
        chr3 = this.readByte(input);

        enc1 = chr1 >> 2;
        enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;

if (isNaN(chr2)) 
{
enc3 = enc4 = 64;
} 
else if (isNaN(chr3)) 
{
enc4 = 64;
}

output.write(this.keyStr.charAt(enc1) + this.keyStr.charAt(enc2) + 
            this.keyStr.charAt(enc3) + this.keyStr.charAt(enc4));
            
      } while (!input.eof);

      return output;
   }

/**
 * decode a base64 encoded string, returns a string stream
 */
   function decode(input) 
   {
      var output = new StringStream;
      var chr1, chr2, chr3;
      var enc1, enc2, enc3, enc4;
      var i = 0;

      // have all characters that are not A-Z, a-z, 0-9, +, /, or =
      var base64test = new RegExp("[^A-Za-z0-9+/=]", "g");
      if (base64test.exec(input)) 
      {
      trace("Base64.decode: ", "invalid input string");
      return null;
      }     

      do 
      {
         enc1 = this.keyStr.indexOf(input.charAt(i++));
         enc2 = this.keyStr.indexOf(input.charAt(i++));
         enc3 = this.keyStr.indexOf(input.charAt(i++));
         enc4 = this.keyStr.indexOf(input.charAt(i++));

         chr1 = (enc1 << 2) | (enc2 >> 4);
         chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
         chr3 = ((enc3 & 3) << 6) | enc4;

         output.put(String.fromCharCode(chr1));

         if (enc3 != 64) 
         {
            output.put(String.fromCharCode(chr2));
         }
         
         if (enc4 != 64) 
         {
            output.put(String.fromCharCode(chr3));
         }

      } while (i < input.length);

   return output;
   }
}

var converter = new Base64();
//var oldStream = StringStream.readFromFile("c:\\image001.JPG");
var out = converter.encode(new FileStream("c:\\image001.jpg"));//oldStream);
var str = out.toString();
//trace(str);
var newStream = converter.decode(str);
newStream.saveToFile("c:\\hello.jpg");