You're reading from Demystifying Cryptography with OpenSSL 3.0 Discover the best techniques to enhance your network security with OpenSSL 3.0

Product type Paperback

Published in Oct 2022

Publisher Packt

ISBN-13 9781800560345

Length 342 pages

Edition 1st Edition

Languages

Tools

Wireshark

Concepts

Cryptography

Author (1):

Alexei Khlebnikov

View More author details

Table of Contents (20) Chapters

Preface

1. Part 1: Introduction

2. Chapter 1: OpenSSL and Other SSL/TLS Libraries FREE CHAPTER

3. Part 2: Symmetric Cryptography

4. Chapter 2: Symmetric Encryption and Decryption

5. Chapter 3: Message Digests

6. Chapter 4: MAC and HMAC

7. Chapter 5: Derivation of an Encryption Key from a Password

8. Part 3: Asymmetric Cryptography and Certificates

9. Chapter 6: Asymmetric Encryption and Decryption

10. Chapter 7: Digital Signatures and Their Verification

11. Chapter 8: X.509 Certificates and PKI

12. Part 4: TLS Connections and Secure Communication

13. Chapter 9: Establishing TLS Connections and Sending Data over Them

14. Chapter 10: Using X.509 Certificates in TLS

15. Chapter 11: Special Usages of TLS

16. Part 5: Running a Mini-CA

17. Chapter 12: Running a Mini-CA

18. Index

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X.509 Certificates and PKI

In this chapter, we will learn about X.509 certificates. Certificates are data structures used for identity presentation and verification. X.509 certificates are crucial for the functioning of TLS and TLS-based protocols, such as HTTPS, where certificates are used to prove the identities of websites. Certificates are also used in secure messaging standards, such as S/MIME; VPN solutions, such as OpenVPN; smart cards, software signing, and so on. X.509 certificates can also optionally be used in IPsec.

We will learn about what certificates consist of, how certificate verification chains are built, and how Public Key Infrastructure (PKI) works. In the practical part of this chapter, we will learn how to generate certificates and verify certificate chains on the command line and programmatically using C code.

We are going to cover the following topics in this chapter: