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Demystifying Cryptography with OpenSSL 3.0

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

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Product type Paperback
Published in Oct 2022
Publisher Packt
ISBN-13 9781800560345
Length 342 pages
Edition 1st Edition
Languages
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Author (1):
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Alexei Khlebnikov Alexei Khlebnikov
Author Profile Icon Alexei Khlebnikov
Alexei Khlebnikov
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Toc

Table of Contents (20) Chapters Close

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 19. Other Books You May Enjoy

Asymmetric Encryption and Decryption

In this chapter, we will learn about asymmetric encryption, how it works, and how public and private keys are used to achieve encryption and decryption. In the practical part of this chapter, we will learn how to use asymmetric encryption and decryption on the command line and in C code.

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

  • Understanding asymmetric encryption
  • Understanding a Man in the Middle attack
  • What kind of asymmetric encryption is available in OpenSSL?
  • Understanding a session key
  • Understanding RSA security
  • How to generate an RSA keypair
  • How to encrypt and decrypt with RSA on the command line
  • How to encrypt with RSA programmatically
  • Understanding the OpenSSL error queue
  • How to decrypt with RSA programmatically
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