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

Shor's algorithm

In a recent interview with David Deutsch (considered one of the fathers of quantum computing), the interviewer posed a question about the philosophy of superposition, asking David, "In what way does the Quantum Computing community give credit to the hypothesis of a multiverse?"

David's answer refers to Q-Cryptography and, in particular, he tries to demonstrate the existence of the multiverse through the factorization problem. I will try to paraphrase David's answer in the following paragraph:

Imagine deciding to factorize an integer number of 10,000 digits, a product of two big prime numbers. No classical computer can express this number as the product of its prime factors. Even if we take all the matter contained in the universe and transform it into a supercomputer, which starts to work for a time long, such as the universe's time, this instrument will not be able to scratch the surface of the factorization problem. Instead,...