Here's my latest project everyone    I created an application that will encrypt any program or appvariable so that it is unreadable until the user decrypts it. Particularly useful if you're tired of people looking at your source without permission or stealing your programs.


The encryption algorithm has several steps and a key that is unique to each calculator. If you encrypt a file on your calc and someone else tries to decrypt it on theirs, it won't work.
The point is, it should make files incredibly difficult to hack. If anyone is up for a challenge, feel free to test it 




I've attatched the current version. After receiving you're feedback I'll update it and then add it to my website

Sounds sweet!
What encrypting method are you using?

oh, ok, so no well-known algo like AES

EDIT: wouldn't only bitshifts allow you to decrypt pretty easily without the key?

There is a reason tons of mathematicians work on encryption algorithms

EDIT: but then again, i bet for a calculator a custom one is more than enough, because who stores highly sensitive info on a calc xD

Yeah i'd rather see less people hiding their source code. But really don't see this as a tool for protecting your source. If for some reason you don't want to share your source just don't release it, and it's easy enough to unprotect a BASIC program I do however like the idea of having encryption on the calc so that your math teacher can't see that funny picture you drew of them and can't read the notes you've got saved on there.

Yeah i'd rather see less people hiding their source code. But really don't see this as a tool for protecting your source. If for some reason you don't want to share your source just don't release it, and it's easy enough to unprotect a BASIC program I do however like the idea of having encryption on the calc so that your math teacher can't see that funny picture you drew of them and can't read the notes you've got saved on there.

So true. Speaking of which, I'll release the source for Anchor in a few days when it's completely finished

*of course* these programs aren't meant for cheating on tests, right?

Who would ever do a thing like that    *cough cough* everyone *cough*

Quote from: chickendude on October 07, 2014, 10:16:20 am

Yeah i'd rather see less people hiding their source code. But really don't see this as a tool for protecting your source. If for some reason you don't want to share your source just don't release it, and it's easy enough to unprotect a BASIC program I do however like the idea of having encryption on the calc so that your math teacher can't see that funny picture you drew of them and can't read the notes you've got saved on there.

So true. Speaking of which, I'll release the source for Anchor in a few days when it's completely finished

Quote from: Sorunome on October 07, 2014, 10:23:54 am

*of course* these programs aren't meant for cheating on tests, right?

Who would ever do a thing like that    *cough cough* everyone *cough*

Well, at least in general TI community programmers tend to use more common sense when doing exams. Also, if you cheat on tests then you impair your math skills, which, in the process, impairs your programming skills, since programming requires math.

Of course there are people who at least probably cheated once on a test, though, when they were younger, or at least did something close to it, but I mean, most people who begged for help to cheat on Omni never wrote a single calculator program (not even Hello World).

On a side note, I really like that splash screen

At least in Quebec, teachers know how to make exams that are cheating-proof: Basically, there is an entire section of the exam with fewer questions, but that counts for about 75% of the total score, where they require the student to write down the entire solution to the problem, so if you use a program that does everything for you, then you only get 1 point for the answer and you lose all 3 points for the solution, meaning 25% score. I don't know if that changed, but back in the days we could use whatever calc and program we want because of that, and they even let us write down school notes on 1 sheet of paper they provided.

If they did this worlwide, then perhaps we would no longer need restrictions on calculators that can be used in tests.