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  • Book Overview & Buying BeagleBone for Secret Agents
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BeagleBone for Secret Agents

BeagleBone for Secret Agents

By : Joshua Datko
4 (2)
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BeagleBone for Secret Agents

BeagleBone for Secret Agents

4 (2)
By: Joshua Datko
Buy this Book

Overview of this book

If you have some experience with the BeagleBone or similar embedded systems and want to learn more about security and privacy, this book is for you. Alternatively, if you have a security and privacy background and want to learn more about embedded development, this book is for you. You should have some familiarity with Linux systems and with the C and Python programming languages.
Table of Contents (8 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
Free Chapter
1
1. Creating Your BeagleBone Black Development Environment
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1. Creating Your BeagleBone Black Development Environment
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Introducing the BBB
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Creating an embedded development environment with Emacs
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Finding additional background information
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Summary
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2. Circumventing Censorship with a Tor Bridge
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2. Circumventing Censorship with a Tor Bridge
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Learning about Tor
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Installing Tor on BBB
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Understanding Tor exit policies
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Setting bridge-specific settings
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Starting your new Tor bridge
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Enabling port forwarding
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Adding physical interfaces to the bridge
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Determining your bandwidth with speedtest-cli
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Controlling the bridge with the Stem library
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Connecting to your obfuscated bridge
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Continuing with Tor-related projects
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Summary
3
3. Adding Hardware Security with the CryptoCape
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3. Adding Hardware Security with the CryptoCape
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Exploring the differences between hardware and software cryptography
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Touring the CryptoCape
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Discovering the I2C protocol
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Understanding the benefit of cape EEPROMs
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Creating an eLinux wiki site
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Keeping time with a real-time clock
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Trusting computing devices with a Trusted Platform Module
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Providing hardware authentication with ATSHA204 and ATECC108
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Encrypting EEPROM data with the ATAES132
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Combining the BBB with an ATmega328p
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Building a two-factor biometric system
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Summary
4
4. Protecting GPG Keys with a Trusted Platform Module
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4. Protecting GPG Keys with a Trusted Platform Module
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History of PGP
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Developing a threat model
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Generating GPG keys
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Protecting your GPG key with a TPM
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Adding the keypad
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Taking ownership of the TPM
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Extending a PCR
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Unlocking your key at startup
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Iterating on the threat model
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Summary
5
5. Chatting Off-the-Record
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5. Chatting Off-the-Record
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Communicating Off-the-Record – a background
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Installing BitlBee on the BeagleBone
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Adding OTR to your BitlBee server
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Marshalling your IRC connections with a Bouncer
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Extending the project
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Summary
6
A. Selected Bibliography
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Chapter 1
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Chapter 2
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Chapter 3
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Chapter 4
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Chapter 5
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Index
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Index

Chapter 4. Protecting GPG Keys with a Trusted Platform Module

After our investigation into BBB hardware security, we'll now use that technology to protect your personal encryption keys for the popular GPG software. GPG is a free implementation of the OpenPGP standard. This standard was developed based on the work of Philip Zimmerman and his Pretty Good Privacy (PGP) software. PGP has a complex socio-political backstory, which we'll briefly cover before getting into the project. For the project, we'll treat the BBB as a separate cryptographic co-processor and use the CryptoCape, with a keypad code entry device, to protect our GPG keys when they are not in use.

Specifically, we will do the following:

  • Tell you a little about the history and importance of the PGP software
  • Perform basic threat modeling to analyze your project
  • Create a strong PGP key using the free GPG software
  • Teach you to use the TPM to protect encryption keys

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