I have a pretty sweet encrypter/decrypter online that I wrote in Perl. Feel free to check it out and see if this is something that might interest you:
http://www.trixmaster.com/designs/encrypter.pl
It has 144-bit key strength, plus I added a little extra trickery to epitomize randomness of outputted ciphertext.
If I told ya the code, I would then have to kill you.lol(j/k)
David