- •Table of Contents
- •BackCover
- •Cryptography-A Very Short Introduction
- •Chapter 1: Introduction
- •Using this book
- •Chapter 2: Understanding Cryptography
- •The basic concepts
- •Chapter 3: Historical Algorithms: Simple Examples
- •Caesar Cipher
- •Simple Substitution Ciphers
- •The statistics of the English language
- •The Playfair Cipher
- •Homophonic Coding
- •Polyalphabetic Ciphers
- •Vigenère Ciphers
- •Transposition Ciphers
- •Super-encryption
- •Some conclusions
- •Appendix
- •Chapter 4: Unbreakable Ciphers?
- •Perfect secrecy
- •The one-time pad
- •Chapter 5: Modern Algorithms
- •Bit-strings
- •Stream ciphers
- •Block ciphers (ECB mode)
- •Hash functions
- •Public key systems
- •Chapter 6: Practical Security
- •Realistic security
- •Practical exhaustive key searches
- •Attacks on public key systems
- •Chapter 7: Uses of Cryptography
- •Using symmetric algorithms for confidentiality
- •Authentication
- •Using symmetric algorithms for authentication and data integrity
- •Digital signatures
- •Certification authorities
- •Public Key Infrastructure
- •The need for trust
- •Chapter 8: Key Management
- •The key life cycle
- •Key hierarchies
- •Managing keys in networks
- •Using a trusted management centre
- •Key recovery and key back-up
- •Chapter 9: Cryptography in Everyday Life
- •A cash withdrawal from an ATM
- •Pretty Good Privacy (PGP)
- •Secure web browsing
- •Using a GSM mobile phone
- •References and further reading
Table of Contents
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Cryptography: A Very Short Introduction |
|
by Fred Piper and Sean Murphy |
ISBN:0192803158 |
Oxford University Press © 2002 (142 pages) |
|
A fascinating introduction to cryptography, and how it actually works.
Table of Contents
Cryptography—A Very Short Introduction
Chapter 1 - Introduction
Chapter 2 - Understanding Cryptography
Chapter 3 - Historical Algorithms: Simple Examples
Chapter 4 - Unbreakable Ciphers?
Chapter 5 - Modern Algorithms
Chapter 6 - Practical Security
Chapter 7 - Uses of Cryptography
Chapter 8 - Key Management
Chapter 9 - Cryptography in Everyday Life
References and further reading
Index
List of Figures
List of Tables
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BackCover
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Back Cover
We are surrounded by cryptography, from the ATM, where we withdraw cash, mobile phones, and the Internet, to workplace security systems that protect business secrets, and the civil and military codes that protect the skies above us.
In this fascinating introduction to how cryptography actually works, Fred Piper and Sean Murphy highlight its all-pervasive impact on modern society. Tracing the major historical developments in cryptography to many present-day examples, which readers can sample themselves, such as creating digital signatures, this Very Short Introduction demystifies the art of cryptography, highlighting the considerable social and political, as well as practical, importance of data protection and authentication in the modern world.
About the Authors
Fred Piper has been a professor of Mathematics at the University of London since 1975 and has worked in security since 1979. In 1985 he formed a company, Codes & Ciphers Ltd., which offers consultancy advice in all aspects of information security. He has lectured world-wide on a wide range of topics in information security, both academically and commercially. He is currently Director of the Information Security Group at Royal Holloway, University of London.
Sean Murphy is a Professor in the Information Security Group at Royal Holloway, University of London. His research interest centre on cryptology, escpecially encryption algorithms. He published some of the early papers on differential cyptoanalysis, and has written papers on a variety of cryptographic algorithms.
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Cryptography-A Very Short Introduction
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Cryptography—A Very Short Introduction
Fred Piper and
Sean Murphy
Great Clarendon Street, Oxford ox2 6DP
Oxford University Press is a department of the University of Oxford. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide in Oxford New York
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Copyright © Fred Piper and Sean Murphy 2002
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Database right Oxford University Press (maker)
First published as a Very Short Introduction 2002
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ISBN 0-19-280315-8
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Acknowledgements
This book has evolved over a number of years with many people making valuable comments and suggestions. We thank them all. We are particularly grateful to Gerry Cole, Ross Patel, and Peter Wild for reading the final draft, and to Adrian Culley and Kalatzis Nikolas for saving us from embarrassment by correcting some of our exercises. Most of all we appreciate the contribution of Pauline Stoner who managed to convert apparent random scribble into a presentable format. Her patience was frequently tested and the book would not have been completed without her.
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