Book Image

Modern Cryptography for Cybersecurity Professionals

By : Lisa Bock
Book Image

Modern Cryptography for Cybersecurity Professionals

By: Lisa Bock

Overview of this book

In today's world, it is important to have confidence in your data storage and transmission strategy. Cryptography can provide you with this confidentiality, integrity, authentication, and non-repudiation. But are you aware of just what exactly is involved in using cryptographic techniques? Modern Cryptography for Cybersecurity Professionals helps you to gain a better understanding of the cryptographic elements necessary to secure your data. The book begins by helping you to understand why we need to secure data and how encryption can provide protection, whether it be in motion or at rest. You'll then delve into symmetric and asymmetric encryption and discover how a hash is used. As you advance, you'll see how the public key infrastructure (PKI) and certificates build trust between parties, so that we can confidently encrypt and exchange data. Finally, you'll explore the practical applications of cryptographic techniques, including passwords, email, and blockchain technology, along with securely transmitting data using a virtual private network (VPN). By the end of this cryptography book, you'll have gained a solid understanding of cryptographic techniques and terms, learned how symmetric and asymmetric encryption and hashed are used, and recognized the importance of key management and the PKI.

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Table of Contents (16 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Download the color images
Conventions used
Get in touch
Reviews
1
Section 1: Securing Our Data
Section 1: Securing Our Data
Free Chapter
2
Chapter 1: Protecting Data in Motion or at Rest
Chapter 1: Protecting Data in Motion or at Rest
Outlining the current threat landscape
Understanding security services
Introducing common cryptographic concepts
Outlining substitution and transposition
Summary
Questions
Further reading
3
Chapter 2: The Evolution of Ciphers
Chapter 2: The Evolution of Ciphers
Early uses of cryptography
Encoding transmissions during war
Entering the digital age
Summary
Questions
Further reading
4
Chapter 3: Evaluating Network Attacks
Chapter 3: Evaluating Network Attacks
Comparing passive and active attacks
Protecting sensitive data
Maintaining integrity
Summary
Questions
Further reading
5
Section 2: Understanding Cryptographic Techniques
Section 2: Understanding Cryptographic Techniques
6
Chapter 4: Introducing Symmetric Encryption
Chapter 4: Introducing Symmetric Encryption
Discovering the evolution of symmetric encryption
Outlining symmetric algorithms
Dissecting block and stream ciphers
Comparing symmetric encryption operation modes
Securing wireless communications
Summary
Questions
Further reading
7
Chapter 5: Dissecting Asymmetric Encryption
Chapter 5: Dissecting Asymmetric Encryption
Realizing the need for asymmetric encryption
Understanding cryptographic requirements
Comparing public-key algorithms
Working with digital signatures
Summary
Questions
Further reading
8
Chapter 6: Examining Hash Algorithms
Chapter 6: Examining Hash Algorithms
Describing a hash algorithm
Identifying optimal hash properties
Comparing common hash algorithms
Authenticating a message
Summary
Questions
Further reading
9
Section 3: Applying Cryptography in Today's World
Section 3: Applying Cryptography in Today's World
10
Chapter 7: Adhering to Standards
Chapter 7: Adhering to Standards
Understanding FIPS and PCI DSS
Staying compliant
Leveraging encrypted data
Summary
Questions
Further reading
11
Chapter 8: Using a Public Key Infrastructure
Chapter 8: Using a Public Key Infrastructure
Describing a PKI framework
Managing public keys
Examining a certificate
Summary
Questions
Further reading
12
Chapter 9: Exploring IPsec and TLS
Chapter 9: Exploring IPsec and TLS
Using a VPN
Outlining an IPsec VPN
Understanding TLS
Summary
Questions
Further reading
13
Chapter 10: Protecting Cryptographic Techniques
Chapter 10: Protecting Cryptographic Techniques
Recognizing cryptographic attacks
Attacking the infrastructure
Influence of quantum computing
Summary
Questions
Further reading
14
Assessments
Chapter 1 – Protecting Data in Motion or at Rest
Chapter 2 – The Evolution of Ciphers
Chapter 3 – Evaluating Network Attacks
Chapter 4 – Introducing Symmetric Encryption
Chapter 5 – Dissecting Asymmetric Encryption
Chapter 6 – Examining Hash Algorithms
Chapter 7 – Adhering to Standards
Chapter 8 – Using a Public Key Infrastructure
Chapter 9 – Exploring IPsec and TLS
Chapter 10 – Protecting Cryptographic Techniques
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To get the most out of this book

When reading Modern Cryptography for Cybersecurity Professionals, you will learn the basics of how we secure data using encryption. In order to fully understand the concepts, I have provided several links in each chapter for additional research, which I encourage you to visit.

In addition, I have provided links that take you to sites to see some applications available online. For example, we'll visit sites that show us how letter frequency analysis works, how a hash algorithm transforms text, and what Morse code sounds like.

So that you can follow along, it's best to have an up-to-date browser such as Chrome, Firefox, or Safari on a Windows, macOS, or Linux machine.

Important note

Any web pages or email addresses are fictional. Any correlation with any real entities is purely coincidental.

Most of the resources will be found online, however, there are a few chapters that I will use specialized software, such as:

In Chapter 6, Examining Hash Algorithms, we'll cover how you can easily run a checksum on any file by using 7-Zip. To obtain a copy of 7-Zip, go to https://www.7-zip.org/.

In Chapter 9, Exploring IPsec and TLS, we'll take a look at PuTTY, a free SSH client you can use on a Windows system to access a single other host via Telnet and remote login (rlogin). To obtain a copy of PuTTY, go to https://www.putty.org/.

I encourage you to go to the sites I have provided to supplement your knowledge.

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