Cryptography Simply In Depth
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Cryptography Simply In Depth
Cryptography is an indispensable tool used to protect information in computing systems. It is used everywhere and by billions of people worldwide on a daily basis. It is used to protect data at rest and data in motion. Cryptographic systems are an integral part of standard protocols, most notably the Transport Layer Security (TLS) protocol, making it relatively easy to incorporate strong encryption into a wide range of applications. While extremely useful, cryptography is also highly brittle. The most secure cryptographic system can be rendered completely insecure by a single specification or programming error. No amount of unit testing will uncover a security vulnerability in a cryptosystem. Instead, to argue that a cryptosystem is secure, we rely on mathematical modeling and proofs to show that a particular system satisfies the security properties attributed to it. We often need to introduce certain plausible assumptions to push our security arguments through. This book is about exactly that: constructing practical cryptosystems for which we can argue security under plausible assumptions. The book covers many constructions for different tasks in cryptography. For each task we define a precise security goal that i aim to achieve and then present constructions that achieve the required goal. To analyze the constructions, we develop a unified framework for doing cryptographic proofs. A reader who masters this framework will be capable of applying it to new constructions that may not be covered in the book. Throughout the book i presented many case studies to survey how deployed systems operate. I described common mistakes to avoid as well as attacks on real-world systems that illustrate the importance of rigor in cryptography. I ended every chapter with a fun application that applies the ideas in the chapter in some unexpected way.
TLS Cryptography In-Depth
Author: Dr. Paul Duplys
language: en
Publisher: Packt Publishing Ltd
Release Date: 2024-01-29
A practical introduction to modern cryptography using the Transport Layer Security protocol as the primary reference Key Features Learn about real-world cryptographic pitfalls and how to avoid them Understand past attacks on TLS, how these attacks worked, and how they were fixed Discover the inner workings of modern cryptography and its application within TLS Purchase of the print or Kindle book includes a free PDF eBook Book DescriptionTLS is the most widely used cryptographic protocol today, enabling e-commerce, online banking, and secure online communication. Written by Dr. Paul Duplys, Security, Privacy & Safety Research Lead at Bosch, and Dr. Roland Schmitz, Internet Security Professor at Stuttgart Media University, this book will help you gain a deep understanding of how and why TLS works, how past attacks on TLS were possible, and how vulnerabilities that enabled them were addressed in the latest TLS version 1.3. By exploring the inner workings of TLS, you’ll be able to configure it and use it more securely. Starting with the basic concepts, you’ll be led step by step through the world of modern cryptography, guided by the TLS protocol. As you advance, you’ll be learning about the necessary mathematical concepts from scratch. Topics such as public-key cryptography based on elliptic curves will be explained with a view on real-world applications in TLS. With easy-to-understand concepts, you’ll find out how secret keys are generated and exchanged in TLS, and how they are used to creating a secure channel between a client and a server. By the end of this book, you’ll have the knowledge to configure TLS servers securely. Moreover, you’ll have gained a deep knowledge of the cryptographic primitives that make up TLS.What you will learn Understand TLS principles and protocols for secure internet communication Find out how cryptographic primitives are used within TLS V1.3 Discover best practices for secure configuration and implementation of TLS Evaluate and select appropriate cipher suites for optimal security Get an in-depth understanding of common cryptographic vulnerabilities and ways to mitigate them Explore forward secrecy and its importance in maintaining confidentiality Understand TLS extensions and their significance in enhancing TLS functionality Who this book is for This book is for IT professionals, cybersecurity professionals, security engineers, cryptographers, software developers, and administrators looking to gain a solid understanding of TLS specifics and their relationship with cryptography. This book can also be used by computer science and computer engineering students to learn about key cryptographic concepts in a clear, yet rigorous way with its applications in TLS. There are no specific prerequisites, but a basic familiarity with programming and mathematics will be helpful.
Cryptography Made Simple
In this introductory textbook the author explains the key topics in cryptography. He takes a modern approach, where defining what is meant by "secure" is as important as creating something that achieves that goal, and security definitions are central to the discussion throughout. The author balances a largely non-rigorous style — many proofs are sketched only — with appropriate formality and depth. For example, he uses the terminology of groups and finite fields so that the reader can understand both the latest academic research and "real-world" documents such as application programming interface descriptions and cryptographic standards. The text employs colour to distinguish between public and private information, and all chapters include summaries and suggestions for further reading. This is a suitable textbook for advanced undergraduate and graduate students in computer science, mathematics and engineering, and for self-study by professionals in information security. While the appendix summarizes most of the basic algebra and notation required, it is assumed that the reader has a basic knowledge of discrete mathematics, probability, and elementary calculus.