For Tricia: never dull, never boring,
the smartest and bravest person
Iknow
ISBN 10:1-292-15858-1
ISBN 13: 978-1-292-15858-7
10 9
8 7 6 5 4 3 2 1
British Library Cataloguing-in-Publication Data
A catalogue record for this book is available from the British Library
Vice President and Editorial Director, ECS:
Marcia J. Horton
Executive Editor:
Tracy Johnson (Dunkelberger)
Editorial Assistant: Kristy Alaura
Acquisitions Editor, Global Editions: Abhijit Baroi
Program Manager: Carole Snyder
Project Manager: Robert Engelhardt
Project Editor, Global Editions: K.K. Neelakantan
Media Team Lead: Steve Wright
R&P Manager: Rachel Youdelman
R&P Senior Project Manager: William Opaluch
Senior Operations Specialist: Maura Zaldivar-Garcia
Inventory Manager: Meredith Maresca
Inventory Manager: Meredith Maresca
Senior Manufacturing Controller, Global Editions:
Trudy Kimber
Media Production Manager, Global Editions:
Vikram Kumar
Product Marketing Manager: Bram Van Kempen
Marketing Assistant: Jon Bryant
Cover Designer: Lumina Datamatics
Cover Art: © goghy73 / Shutterstock
Full-Service Project Management:
Chandrakala Prakash, SPi Global
Composition: SPi Global
Credits and acknowledgments borrowed from other sources and reproduced, with permission, in this textbook
appear on page 753.
© Pearson Education Limited 2017
The right of William Stallings to be identified as the author of this work has been asserted by him in accordance
with the Copyright, Designs and Patents Act 1988.
Authorized adaptation from the United States edition, entitled Cryptography and Network Security: Principles and
Practice, 7
th
Edition, ISBN 978-0-13-444428-4, by William Stallings published by Pearson Education © 2017.
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without either the prior
written permission of the publisher or a license permitting restricted copying in the United Kingdom issued by the
Copyright Licensing Agency Ltd, Saffron House, 6–10 Kirby Street, London EC1N 8TS.
All trademarks used herein are the property of their respective owners. The use of any trademark in this text does
not vest in the author or publisher any trademark ownership rights in such trademarks, nor does the use of such
trademarks imply any affiliation with or endorsement of this book by such owners.
Pearson Education Limited
Edinburgh Gate
Harlow
Essex CM20 2JE
England
and Associated Companies throughout the world
Visit us on the World Wide Web at:
www.pearsonglobaleditions.com
Typeset by SPi Global
Printed and bound in Malaysia.
