Book Image

Mastering IOT

By : Colin Dow, Perry Lea
Book Image

Mastering IOT

By: Colin Dow, Perry Lea

Overview of this book

The Internet of Things (IoT) is the fastest growing technology market. Industries are embracing IoT technologies to improve operational expenses, product life, and people's well-being. We’ll begin our journey with an introduction to Raspberry Pi and quickly jump right into Python programming. We’ll learn all concepts through multiple projects, and then reinforce our learnings by creating an IoT robot car. We’ll examine modern sensor systems and focus on what their power and functionality can bring to our system. We’ll also gain insight into cloud and fog architectures, including the OpenFog standards. The Learning Path will conclude by discussing three forms of prevalent attacks and ways to improve the security of our IoT infrastructure. By the end of this Learning Path, we will have traversed the entire spectrum of technologies needed to build a successful IoT system, and will have the confidence to build, secure, and monitor our IoT infrastructure. This Learning Path includes content from the following Packt products: Internet of Things Programming Projects by Colin Dow Internet of Things for Architects by Perry Lea
Table of Contents (34 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Free Chapter
1
The IoT Story
Index

Cryptography


Encryption and secrecy are absolute requirements of IoT deployments. They are used for securing communication, protecting firmware, and authentication. Regarding encryption, there are generally three forms to consider:

  • Symmetric key encryption: Encryption and decryption keys are identical. RC5, DES, 3DES, and AES are all forms of symmetric key encryption. 
  • Public Key encryption: Encryption key is published publicly for anyone to use and encrypt data. Only the receiving party has a private key used to decrypt the message. This is also known as asymmetric encryption. Asymmetric cryptography manages data secrecy, authenticates participants, and forces non-repudiation. Well-know internet encryption and message protocols such as Elliptic Curve, PGP, RSA, TLS, and S/MIME are considered public keys. 
  • Cryptographic hash: Maps data of an arbitrary size to a bit string (called the digest). This hash function is designed to be "one way". Essentially, the only way to recreate the output hash...