Security

[Eaton]

I have been thinking of a way to implement security on my programs... I want to put some sort of hash or checksum on my program's exe and put a code in the loading code of the program to verify if the hash/checksum is valid. Is is possible to do this or will it not work?

[grimdoomer]

I have been thinking of a way to implement security on my programs... I want to put some sort of hash or checksum on my program's exe and put a code in the loading code of the program to verify if the hash/checksum is valid. Is is possible to do this or will it not work?

Yes, but unless your app does something worth blocking, like a public beta expiration date, then you wouldn't need to. Also, anyone with the skills to reverse your app wouldn't need it. Especially at this time and age in modding.

[[cc]z@nd!]

I agree with grimdoomer, the demand for an altered/cracked version of your program is probably so low that it isn't worth worrying about. I don't know of any protection methods myself, but assuming the program takes a hash/checksum of it's own code, it wouldn't be too hard to take a peek/debug at how it goes about it, and alter that.

I just grabbed the book from the library today so I haven't had a chance to read it, but you may want to check out Building Secure Software by john viega & gary mcgraw. if your library doesn't have a copy and you don't want to buy, i'm sure there's a copy floating around on the internet somewhere. I'm sure there's also much more than just one book on this subject.