Two things:
I turned on word verification for my comments because I managed to get two comment spams on the post about Rita. So since then I've decided that there's no way in hell anyone's going to work up a robust algorithm to automatically verify those letters. I can barely read them myself. Half the time I post a comment and write the letters for the verification and cross my fingers and hope I got them right. I've been wrong twice. Maybe I just need to learn to read...
My computer forensics class is going pretty well. Our latest group project is to solve a puzzle given to us by the professor. It consists of a CD with an encrypted RAR file in it. RAR files use AES encryption, which is generally considered to be practically invulnerable to anything but brute force attacks. So, we started a dictionary attack on it, and just shy of 3 million tries later we had gotten nowhere. In the mean time we started analyzing the text that came with it. Written on the cd envelope were five binary sequences, four of them containing eight bits and one only containing seven. Four of them were ASCII characters, so we figured the fifth was, too. Adding a bit to it gave us six possible combinations it could have been, so that gave us 6!/4 possible permutations to try. Turns out one of them did it. The only thing in the file was a very silly picture of a professor with four numbers written on it. Attached to the back of the CD envelope was a piece of paper with a sequence of characters on it. It looks like some sort of rotation or substitution cipher. I'm currently working on that. I'm having a blast!
