How to encrypt Script extension file(.tcx), to hide implementation details from unauthorized user?

Dear Experts,

I have a Script Extension File(.tcx) packed using "slPacker.Pack" in test complete. But if we rename file extension from .tcx to .zip, user could easily unzip and see the implementation details (code and descript file). Is there any way that we could encrypt the Script Extension File, so that Implementation details are hidden by unauthorized people.

Thanks and Regards,

Jayakoti