Librería Portfolio

Presents a comprehensive introduction to the role that cryptography plays in the modern world
Introductory, self-contained and widely accessible
Focuses on the issues that are of concern to users and practitioners, rather than theorists
Can be used as the basis of an educational course through the provision of structured learning outcomes, further reading and activities for each chapter
Also considers wider societal issues that arise concerning the use of cryptography
Almost no prior knowledge of mathematics is required
New to this Edition:
New chapter on controlling use of cryptography following revelations by former NSA contractor Edward Snowden
New chapter on cryptographic protection of personal devices such as mobile phones, including cryptography behind WhatsApp and Apple´s iOS operating system
New case studies concerning Tor and Bitcoin
Updated case studies to feature new developments including TLS 1.3, LTE and Apple Pay
Extended core material to include techniques gaining popularity such as SHA3, authenticated encryption modes, key derivation functions, and key wrapping



Cryptography is a vital technology that underpins the security of information in computer networks. This book presents a comprehensive introduction to the role that cryptography plays in providing information security for everyday technologies such as the Internet, mobile phones, Wi-Fi networks, payment cards, Tor, and Bitcoin.

This book is intended to be introductory, self-contained, and widely accessible. It is suitable as a first read on cryptography. Almost no prior knowledge of mathematics is required since the book deliberately avoids the details of the mathematics techniques underpinning cryptographic mechanisms. Instead our focus will be on what a normal user or practitioner of information security needs to know about cryptography in order to understand the design and use of everyday cryptographic applications.

By focusing on the fundamental principles of modern cryptography rather than the technical details of current cryptographic technology, the main part this book is relatively timeless, and illustrates the application of these principles by considering a number of contemporary applications of cryptography. Following the revelations of former NSA contractor Edward Snowden, the book considers the wider societal impact of use of cryptography and strategies for addressing this.

A reader of this book will not only be able to understand the everyday use of cryptography, but also be able to interpret future developments in this fascinating and crucially important area of technology.



Table of Contents
Setting the Scene
1: Basic Principles
2: Historical Cryptosystems
3: Theoretical versus Practical Security
The Cryptographic Toolkit
4: Symmetric Encryption
5: Public-Key Encryption
6: Data Integrity
7: Digital Signature Schemes
8: Entity Authentication
9: Cryptographic Protocols
Key Management
10: Key Management
11: Public-Key Management
Use of Cryptography
12: Cryptographic Applications
13: Cryptography for Personal Devices
14: Control of Cryptography
15: Closing Remarks