Book Image

Cryptography Algorithms

By : Massimo Bertaccini
Book Image

Cryptography Algorithms

By: Massimo Bertaccini

Overview of this book

Cryptography Algorithms is designed to help you get up and running with modern cryptography algorithms. You'll not only explore old and modern security practices but also discover practical examples of implementing them effectively. The book starts with an overview of cryptography, exploring key concepts including popular classical symmetric and asymmetric algorithms, protocol standards, and more. You'll also cover everything from building crypto codes to breaking them. In addition to this, the book will help you to understand the difference between various types of digital signatures. As you advance, you will become well-versed with the new-age cryptography algorithms and protocols such as public and private key cryptography, zero-knowledge protocols, elliptic curves, quantum cryptography, and homomorphic encryption. Finally, you'll be able to apply the knowledge you've gained with the help of practical examples and use cases. By the end of this cryptography book, you will be well-versed with modern cryptography and be able to effectively apply it to security applications.
Table of Contents (15 chapters)
1
Section 1: A Brief History and Outline of Cryptography
3
Section 2: Classical Cryptography (Symmetric and Asymmetric Encryption)
7
Section 3: New Cryptography Algorithms and Protocols
12
Section 4: Homomorphic Encryption and the Crypto Search Engine

Summary

In this chapter, you learned about symmetric encryption. We have explored the Boolean operations necessary for understanding symmetric encryption, KE, and S-Box functionality. Then, we deep-dived into how simple DES, DES, 3DES, and DESX work and their principal vulnerabilities and attacks.

After these topics, we analyzed AES (Rijndael), including its implementation schema and the logic of the steps that make this algorithm so strong. Regarding the vulnerabilities and attacks on AES, you have understood how the difference between ECB mode and CBC mode can make it vulnerable to block cipher implementation attacks.

Finally, we explored some of the best-known side-channel attacks valid for most cryptographic algorithms.

These topics are essential because now you have learned how to implement a cryptographic symmetric algorithm, and you have more familiarity with its peculiarities. We will see many correlations with this part in the next chapters. Chapter 9, Crypto Search...