This is a pidgin plugin which implements Off-the-Record (OTR)
Messaging. OTR allows you to have private conversations over IM
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.

Authors:
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Nikita Borisov and Ian Goldberg