Hardware Reference
In-Depth Information
Chapter 5. Chatting Off-the-Record
In this final chapter, we will use the
BeagleBone Black
(
BBB
) to protect the last bastion of
your online life: real-time chats. With your e-mail protected by GPG and your browsing
protected by Tor, we'll use the software called
Off-the-Record
(
OTR
) to protect instant
messaging chats. OTR addresses a weakness in the PGP threat model and we will give an
overview of the OTR design objectives before building the project. We'll also consolidate
all of your chat networks to be managed over an Internet Relay Chat interface, which will
run on your BBB. While this project doesn't require any additional hardware other than the
BBB, the cryptographic concepts and networking interactions are slightly more challenging
than the previous chapters. At the end of this chapter and the topic, you will have had ex-
posure to and become familiar with the three most effective tools to protect your privacy
online.
In this chapter, you will do the following:
• Learn the difference between the cryptographic design between PGP and OTR
• Run an IRC to chat gateway with BitlBee
• Incorporate your IRC networks with the IRC bouncer ZNC
• Set up and use OTR chat on BitlBee and ZNC
