Question

I’m working on important project using Flex framework and i want to keep my algorithms and code secret. Is it possible to somehow protect swf file from being decompiled? I don’t want someone extract my code using flash decompilers.

Thanks.

Answer 1

While there is no full-proof way to secure code from decompilers there are some tricks to reduce the chances of this happening.

1. host the .swf on a https server then
   it doesnt get cached
2. You can obfuscate the code to make
   it impossible to understand even if
   it is decompiled.
3. Change the file extension of the
   .swf file to something like a .jpg
   file or a .png file, the browser
   should still detect that it is a
   .swf and display it correctly, but
   it will be stored in the cache as an
   image file