Last updated on 2012-11-06, by Dupont

How to Encrypt ActionScript of Your SWF Files

Why do we need to encrypt ActionScript of our SWF files? Because of such SWF Decompilers, like Sothink SWF Decompiler which can decompile any and every SWF you can get your hands on. That is a real threat if you want to publish your Flash game online. By encrypting ActionScript of your SWF files you can protect SWF files from being decompiled into the wrong hands.

Leawo ActionScript Encrypt allows you to scramble your source code to the point that it will be completely unreadable by the person trying to recover your source code. The good thing is that encryption software works on a SWF file so you don’t have to worry about it messing up your actual as2/as3 source code, thus ensures normal running of the output SWF files.

Free download Leawo SWF Encrypt and install it on your computer, then follow the below steps to encrypt ActionScript of your SWF files.

Full Guide

Load SWF files.

There are two different ways to import SWF files to the program. Load irrelevant SWF files for common files and load relevant SWF files to ensure successful invocation of SWF files after encryption.

Choose SWF flash encryption parameters.

Now choose the SWF encryption ways like Basic Encryption to obfuscate the names of the ActionScript code and Exceptional Encryption to exclude the items you don’t want to obfuscate and Intensified Encryption to encrypt intensively for some specific strings.

You can choose encryption parameters for every sing SWF file or just select all the imported SWF files and apply the same encryption settings.

Specify an output location and start encryption.

Set output directory in Output frame to save encrypted SWF flash files. Click the right bottom Encrypt button to start to encrypt SWF flash files upon the encryption ways you choose.

1. Protected SWF files could not be encrypted again by this SWF Encrypt program.

2. The SWF encryption will protect your SWF file and has no influence on the normal running on webpages.