Off-The-Record Messaging plugin for various irc clientshttp://irssi-otr.tuxfamily.org/
This package provides modules which implement Off-The-Record (OTR) Messaging
protocol for a number of popular IRC clients.
OTR allows you to have private conversations over IM by providing:
- No one else can read your instant messages.
- You are assured the correspondent is who you think it is.
- The messages you send do _not_ have digital signatures that are
checkable by a third party. Anyone can forge messages after a
conversation to make them look like they came from you. However,
_during_ a conversation, your correspondent is assured the messages
he sees are authentic and unmodified.
- Perfect forward secrecy
- If you lose control of your private keys, no previous conversation