A simple bash script I originally wrote with an obfuscated backdoor, but decided to fix it and make it functional(ie remove backdoor. ethics, etc.), because why the hell not?
The script just adds, removes, gets and lists user onions on a Tor based UnrealIRC network. The concept of individualized onions is to enable the admin to only allow trusted individuals(identified by the ports they connect to) on the network. Breach of trust, ie leaking of a users onion, can be easily identified and that user can be dealt with via expungement, or, ya know, fuckyou.pl THEN expungement.
This idea isn't new by any stretch nor mine, but it's been effective in keeping meanies away, and works especially well with a mod'd Unreal to give the admin necessary notification of duplicate onions on the network(remember, shit is open source for, well, reasons).
I'm putting this script up here because there's a lot of new/different ways of doing this and similar such things out there, but figured some people interested in private IRC ch@s can get some mileage or ideas out of it.
Also, client-side crypto is your friend.