ivan

Not long time ago, I wrote a simple Xor - encryption and then wrote a brute force attacker for it. It was a great learning experience.

Jessehk

Like you thought, it would be for learning expiriences

I like the idea of doing + and - rather then just adding.

I might also reverse the encrypted text, and maybe add a random number from 1 - 9 to all of them.

Example:

"perl"

p + 2 = r
e - 1 = d
r + 4 = v
l - 8 = d

rdvd

=

dvdr

(dvdr) + 4

hzhu

final word = "hzhu"

I would have the program read from program produced files, with maybe the scramble text at the top of the file, and the key at the bottom. The encryptor would create the files ( either getting input from a file or from stdin; both with command line options ), and decrypt the files and display the output in either a file, or stdout.

sounds good?

__________________
Dr. Zoidberg: [ecstatic] I'm going to a movie... with FRIENDS!

ivan

Yes, but I don't like the idea to put the key in the file... it can be cracked very easy

Infinite Recursion

sounds good.

Make the key be part of the parameter on the command line. Do not include it in the text.

__________________
http://jasonpowers.net

"There are a thousand hacking at the branches of evil to one who is striking at the root."