Demystifying Cryptography with OpenSSL 3. 0. : Discover the Best Techniques to Enhance Your Network Security with OpenSSL 3. 0 / Alexei Khlebnikov and Jarle Adolfsen.

Format:

Book

Author/Creator:

Khlebnikov, Alexei, author.

Adolfsen, Jarle, author.

Language:

English

Subjects (All):

Computer networks--Security measures--Computer programs.

Computer networks.

Data encryption (Computer science).

Physical Description:

1 online resource (342 p.)

Edition:

First edition.

Place of Publication:

Birmingham, England : Packt Publishing Ltd., [2022]

Biography/History:

Khlebnikov Alexei: Alexei Khlebnikov has more than 20 years of professional experience in IT, where he worked in different roles - software developer, system administrator, DevOps engineer, technical leader, architect and project manager. During those years Alexei worked with many technologies - Security, Artificial Intelligence, Web Development, Embedded, Mobile, and Robotics. Among other companies, Alexei worked in Opera Software on the famous Opera Internet browser. Alexei has always been interested in security. He was one of the maintainers of security-related Opera browser modules, responsible for cryptography, SSL/TLS and integration with OpenSSL. He was also a member of the Security Architects group, responsible for the security of the Opera browser. Now Alexei lives in Oslo, Norway, and works as a senior consultant for Bespoke AS. He is also the leader of the Architects group at his current employer.

Summary:

Use OpenSSL to add security features to your application, including cryptographically strong symmetric and asymmetric encryption, digital signatures, SSL/TLS connectivity, and PKI handling Key Features Secure your applications against common network security threats using OpenSSL Get to grips with the latest version of OpenSSL, its new features, and advantages Learn about PKI, cryptography, certificate authorities, and more using real-world examples Book Description Security and networking are essential features of software today. The modern internet is full of worms, Trojan horses, men-in-the-middle, and other threats. This is why maintaining security is more important than ever. OpenSSL is one of the most widely used and essential open source projects on the internet for this purpose. If you are a software developer, system administrator, network security engineer, or DevOps specialist, you've probably stumbled upon this toolset in the past - but how do you make the most out of it? With the help of this book, you will learn the most important features of OpenSSL, and gain insight into its full potential. This book contains step-by-step explanations of essential cryptography and network security concepts, as well as practical examples illustrating the usage of those concepts. You'll start by learning the basics, such as how to perform symmetric encryption and calculate message digests. Next, you will discover more about cryptography: MAC and HMAC, public and private keys, and digital signatures. As you progress, you will explore best practices for using X.509 certificates, public key infrastructure, and TLS connections. By the end of this book, you'll be able to use the most popular features of OpenSSL, allowing you to implement cryptography and TLS in your applications and network infrastructure. What you will learn Understand how to use symmetric cryptography Get to grips with message digests, MAC, and HMAC Discover asymmetric cryptography and digital signatures Focus on how to apply and use X.509 certificates Dive into TLS and its proper usage Manage advanced and special usages of TLS Find out how to run a mini certificate authority for your organization Who this book is for This book is for software developers, system administrators, DevOps specialists, network security engineers, and analysts, or anyone who wants to keep their applications and infrastructure secure. Software developers will learn how to use the OpenSSL library to empower their software with cryptography and TLS. DevOps professionals and sysadmins will learn how to work with cryptographic keys and certificates on the command line, and how to set up a mini-CA for their organization. A basic understanding of security and networking is required.

Contents:

Cover

Title page

Copyright and Credits

Dedication

Foreword

Contributors

Table of Contents

Preface

Part 1: Introduction

Chapter 1: OpenSSL and Other SSL/TLS Libraries

What is OpenSSL?

The history of OpenSSL

What's new in OpenSSL 3.0?

Comparing OpenSSL with GnuTLS

Comparing OpenSSL with NSS

Comparing OpenSSL with Botan

Comparing OpenSSL with lightweight TLS libraries

Comparing OpenSSL with LibreSSL

Comparing OpenSSL with BoringSSL

Summary

Part 2: Symmetric Cryptography

Chapter 2: Symmetric Encryption and Decryption

Technical requirements

Understanding symmetric encryption

An overview of the symmetric ciphers supported by OpenSSL

Comparing block ciphers and stream ciphers

Understanding symmetric cipher security

How many bits of security is enough?

Reviewing the AES cipher

Reviewing DES and 3DES ciphers

Reviewing the RC4 cipher

Reviewing the ChaCha20 cipher

Reviewing other symmetric ciphers supported by OpenSSL

Block cipher modes of operation

Reviewing the Electronic Code Book mode

Reviewing CBC mode

Reviewing CTR mode

Reviewing GCM

Reviewing AES-GCM-SIV

Other block cipher operation modes

Choosing the block cipher operation mode

Padding for block ciphers

How to generate a symmetric encryption key

Downloading and installing OpenSSL

How to encrypt and decrypt with AES on the command line

Initializing and uninitializing OpenSSL library

How to compile and link with OpenSSL

How to encrypt with AES programmatically

Implementing the encryption program

Running the encrypt program

How to decrypt with AES programmatically

Implementing the decrypt program

Running the decrypt program

Summary

Chapter 3: Message Digests

Technical requirements

What are message digests and cryptographic hash functions?

Why are message digests needed?

Data integrity verification

Basis for HMAC

Digital signatures

Network protocols

Password verification

Content identifier

Blockchain and cryptocurrencies

Proof-of-work

Assessing the security of cryptographic hash functions

Overview of the cryptographic hash functions supported by OpenSSL

Reviewing the SHA-2 family of hash functions

Reviewing the SHA-3 family of hash functions

Reviewing the SHA-1 and SHA-0 hash functions

Reviewing the MD family of hash functions

Reviewing the BLAKE2 family of hash functions

Reviewing less popular hash functions supported by OpenSSL

Which cryptographic hash function should you choose?

How to calculate a message digest on the command line

How to calculate the message digest programmatically

Implementing the digest program

Running the digest program

Chapter 4: MAC and HMAC

What is a MAC?

Understanding MAC function security

HMAC

a hash-based MAC

Notes:

Includes index.

OCLC-licensed vendor bibliographic record.

Description based on print version record.

ISBN:

9781800562226

1800562225

OCLC:

1348482195