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Cryptography: A Very Short Introduction

by Sean Murphy

An accessible map of modern cryptography

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AlbakiReads Editorial

An accessible map of modern cryptography

Cryptography is presented here as the infrastructure behind routine digital exchanges, from card payments and online shopping to mobile communication. The book pairs that everyday context with a historical overview and a plain-language introduction to the two central approaches: symmetric and public-key cryptography. Its second edition also addresses more recent developments, including cryptographic systems designed to withstand quantum-computing threats, advanced cryptographic functions, blockchain, secure messaging, and electronic voting. By avoiding an assumption of advanced mathematical knowledge, it frames encryption not as a specialist mystery but as a set of tools, design questions, and evolving practical applications.

Good fit for readers who enjoy

  • Adults seeking a non-technical introduction to computer security and encryption
  • Readers curious about the cryptography behind everyday digital services
  • Those wanting an overview of quantum-resistant cryptography, blockchain, and secure messaging

Themes

Digital securityEncryptionPublic-key cryptographyQuantum-resistant algorithmsEveryday technology

Based on publisher information and book metadata.

Book overview

Cryptography is a part of everyday life for almost all of us, though we may not realise we're using it.

We are a far cry from the historical prediction that cryptography would only be used by militaries and governments. With vast quantities of sensitive information transferred online by individuals, companies, organizations, and nation states, cryptography is increasingly important to everyone, and most of us, often without realising, use it daily. Cryptography: A Very Short Introduction demystifies the art of cryptography by tracing its historical use, explaining how it works, and providing examples of its practical use. These include online shopping, chip and PIN bank cards, and communicating via mobile phone. While many of these uses have been mainstream for some time now, the development and deployment of cryptography has changed enormously in the last twenty years.

In this second edition, Sean Murphy and Rachel Player highlight the important advances in both academic cryptography research and its everyday use. Using non-technical language and without assuming advanced mathematical knowledge, they introduce symmetric and public-key cryptography and provide a detailed discussion of the design of cryptographic algorithms that are secure against quantum computers and the development of cryptographic algorithms with advanced functionalities. They also consider the new applications of cryptography such as blockchain, secure messaging apps, and electronic voting.

ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.
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