private static function EncDecChars():String
{
return “ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/”;
}

private static function InitEncodeChar() : Vector.
{
var encodeChars:Vector. = new Vector.(64, true);
var chars:String = fEncDecChars();
for (var i:int = 0; i < 64; i++)
encodeChars[i] = chars.charCodeAt(i);
return encodeChars;
}

private static function InitDecodeChar() : Vector.
{
var i:int;
var decodeChars:Vector. = new Vector.(256, true);

for (i = 0; i < 256; ++i)
decodeChars[i] = -1;

var chars:String = fEncDecChars();
for (i = 0; i < 64; ++i)
decodeChars[chars.charCodeAt(i)] = i;

return decodeChars;
}