using a README from another submission by Vladimir Seleznev. ok landry@
IRSSI support for Off-The-Record (http://www.cypherpunks.ca/otr/)
messaging, allowing you to have private conversations over instant
messaging by providing:
Encryption
* No one else can read your instant messages.
Authentication
* You are assured the correspondent is who you think it is.
Deniability
* 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 is
compromised.