Looks like Mircryption made it into FreeBSD's official port collection at some point or another! It's been in there since 2005.
I was hanging out with mouser and apparently he never knew about it!
[ excerpt from developer's web site with modifications ]
Mircryption is a free encryption add-on for the popular irc clients
mIRC and XChat. Features:
- Channel text, Private query windows, DCC Chats, Actions, Topics can
all be encrypted. All crypto-related algorithms used are taken from
published, common, trusted sources. Encryption algorithm is Blowfish
(no known vulnerabilities); encryption keys are themselves stored
in encrypted form.
- Supports CBC mode encryption.
- No need to modify the way you work - text is encrypted and decrypted
automatically; encryption status of conversations is clear but
unobtrusive.
- User-friendly key management routines; menu driven and easy to
temporarily disable & re-enable encryption on a channel, send plain
text quicky, etc.
LICENSE: free without any limitation
WWW: https://www.donation...ircryption/index.php
http://www.freshport...c/xchat-mircryption/ 
