Simple encrypt/decrypt(AS3, PHP)

2015. 2. 25. 13:52

Simple encrypt/decrypt(AS3, PHP)

2015. 2. 25. 13:52 in 팁&테크/ActionScript3

액션스크립트 -------------------------------------------------

package {
    import com.hurlant.util.Base64;

    public class Simplecrypt {
        static public function encrypt(str:String, key:String = '%key&'):String {
            var result:String = '';
            for (var i:int = 0; i < str.length; i++) {
                var char:String = str.substr(i, 1);
                var keychar:String = key.substr((i % key.length) - 1, 1);
                var ordChar:int = char.charCodeAt(0);
                var ordKeychar:int = keychar.charCodeAt(0);
                var sum:int = ordChar + ordKeychar;
                char = String.fromCharCode(sum);
                result = result + char;
            }
            return Base64.encode(result);
        }
 
        static public function decrypt(str:String, key:String = '%key&'):String {
            var result:String = '';
            var str:String = Base64.decode(str);
             
            for (var i:int = 0; i < str.length; i++) {
                var char:String = str.substr(i, 1);
                var keychar:String = key.substr((i % key.length) - 1, 1);
                var ordChar:int = char.charCodeAt(0);
                var ordKeychar:int = keychar.charCodeAt(0);
                var sum:int = ordChar - ordKeychar;
                char = String.fromCharCode(sum);
                result = result + char;
            }
            return result;
        }
    }
}


PHP -------------------------------------------------

<?php
class Simplecrypt {
    public static function encrypt($string, $key='%key&') {
        $result = '';
        for($i=0; $i<strlen($string); $i++) {
            $char = substr($string, $i, 1);
            $keychar = substr($key, ($i % strlen($key))-1, 1);
            $ordChar = ord($char);
            $ordKeychar = ord($keychar);
            $sum = $ordChar + $ordKeychar;
            $char = chr($sum);
            $result.=$char;
        }
        return base64_encode($result);
    }
 
    public static function decrypt($string, $key='%key&') {
        $result = '';
        $string = base64_decode($string);
        for($i=0; $i<strlen($string); $i++) {
            $char = substr($string, $i, 1);
            $keychar = substr($key, ($i % strlen($key))-1, 1);
            $ordChar = ord($char);
            $ordKeychar = ord($keychar);
            $sum = $ordChar - $ordKeychar;
            $char = chr($sum);
            $result.=$char;
        }
        return $result;
    }
}