Free encryption?

[RDoh]

I'm pretty sure there's a program similar to Zend to encode PHP scripts but free. I remember it as "ECS" or something similar to that, although I could be totally wrong.

The reason I ask is that I'm going to be selling a script and I don't want the user to be able to modify it.

Thanks.

[steadyguy]

Try a Google search ?

[RDoh]

Done that. I found one "encoder" which could be decoded if a person had the same free program used to encrypt.

I also found an "obfuscating" program which looks the best option at the moment unless anyone can find something better. http://www.sourceguardian.com/

[steadyguy]

I thought up a quirky idea which may or may not be worth your time ... you could add a clause to the terms and conditions which would allow you to check whenever you want to, that the files have not been changed (by using and MD5 hash - which both you and the client have access to (in print)), and revoke the license to use the scripts if they have ... kind of goofy, maybe, but it might be enough of a deterrent to keep customers from fiddling with your code.