ScrambleOPL

Title: ScrambleOPL (Epoc) V1.1 Description: Scramble proc & variable names in OPL source code Author: Richard Smedley <rsmedley@cix.co.uk> Home page: http://www.cix.co.uk/~rsmedley/s5/ INTRODUCTION ============ One of the major problems when writing programs for the Psion is that translated OPL programs still contain the names of all your procedures and variables. This makes things very easy for hackers, because if they find a way of decompiling your program they will be able to restore the names of all your procs and variables to see exactly how the program works. ScrambleOPL makes things more difficult for hackers. It modifies the OPL source code for your program, replacing the name of every proc & variable with a randomly-generated nonsense name. This means that even if somebody does succeed in reverse-translating your program, most of the program will look like gibberish to them - making it a lot more difficult for people to work out how your program works and modify it. Using ScrambleOPL doesn't guarantee that your program won't be hacked by a professional hacker. Sadly nothing can guarantee this. But it will make things a lot more difficult for hackers, to help protect against this happening. ScrambleOPL runs entirely on your Psion, so you don't need to have a desktop machine (PC, Amiga) to use it. Full usage instructions are included in the help file. INSTALLATION ============ This program should be fully compatible with all EPOC machines, including Psion S5/5mx, Revo, S7, Oregon Scientific Osaris, etc. Select SCRAMBLEOPL.SIS to install it on your Psion, and everything will be installed for you automatically. ScrambleOPL uses the following additional modules, which are supplied with the program as SIS files: PERCENT.SIS (Percent.opm V2.20, by Francois Langinieux) SYSRAM1.SIS (Sysram1.opx V1.0) If you haven't installed these on your system yet, or if you are using earlier versions of these modules, then you will need to install these before you can use ScrambleOPL. Again all you need to do is select their SIS files and they will be installed automatically. CONDITIONS OF USE ================= If you want to release any programs that have been protected using ScrambleOPL, then please read the following conditions of use: FREEWARE PROGRAMS: Freeware programs which have been protected using ScrambleOPL can be freely distributed. It would be nice if you could credit me somewhere in the docs for your program, but this isn't essential. SHAREWARE PROGRAMS: If you want to release a shareware program which has been protected using ScrambleOPL, then I would like you to give me a free registration code for your program. Again, it would also be nice if you could credit me in the docs for your program, but this isn't essential. COMMERCIAL PROGRAMS: ScrambleOPL can be used to protect commercial products but you must send me a free copy of the finished product that you are releasing. You must also mention my name somewhere in the credits, either in the manual or in the program itself. Note that you don't have to mention ScrambleOPL, simply mentioning my name is enough. CONTACTING THE AUTHOR ===================== If you have any comments about this program, or if you want to contact me for any reason, then here is my address: Richard Smedley PO Box 59 Sutton-in-Ashfield Notts NG17 3HP England rsmedley@cix.co.uk The latest version of ScrambleOPL will always be available to download from my home page: http://www.cix.co.uk/~rsmedley/s5/ CREDITS ======= I would like to thank the following people for their invaluable help and support while developing this program: Mike Rudin - Author of RevTran Francois Langinieux - Author of Percent.opm COPYRIGHT & DISTRIBUTION ======================== ScrambleOPL is Copyright (C) Richard Smedley 1999. This program may be freely distributed for non-commercial purposes providing that all the original files remain fully intact and unmodified. Commercial use of this program, or any part thereof, requires the written permission of the author. Standard disclaimer applies; you use this program at your own risk. Percent.opm is Copyright (C) Francois Langinieux, 1999. VERSION HISTORY =============== V1.0 (27.02.99) - The first public release. V1.1 (11.12.99) - Completely redesigned the GUI. ScrambleOPL & SafeOPL now have the same "look and feel" to each other. - Now displays a progress bar, so you can instantly see how much of your program has been protected. - You can now press Esc at any time to abort without making any changes to your program. - Numerous improvements to the docs.