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An Introduction To Cryptography

Cryptography is the stuff of spy novels and action comics. Kids once saved up bubble-gum wrappers and sent away for Captain Midnight’s Secret Decoder Ring. Almost everyone has seen a television show or movie involving a nondescript suit-clad gentleman with a briefcase handcuffed to his wrist. The word “espionage” conjures images of James Bond, car chases, and flying bullets. | An Introduction to Cryptography Copyright 1990-1998 Network Associates Inc. and its Affiliated Companies. All Rights Reserved. PGP Version 6.0 8-98. Printed in the United States of America. PGP Pretty Good and Pretty Good Privacy are registered trademarks of Network Associates Inc. and or its Affiliated Companies in the US and other countires. All other registered and unregistered trademarks in this document are the sole property of their respective owners. Portions of this software may use public key algorithms described in U.S. Patent numbers 4 200 770 4 218 582 4 405 829 and 4 424 414 licensed exclusively by Public Key Partners the IDEA tm cryptographic cipher described in U.S. patent number 5 214 703 licensed from Ascom Tech AG and the Northern Telecom Ltd. CAST Encryption Algorithm licensed from Northern Telecom Ltd. IDEA is a trademark of Ascom Tech AG. Network Associates Inc. may have patents and or pending patent applications covering subject matter in this software or its documentation the furnishing of this software or documentation does not give you any license to these patents. The compression code in PGP is by Mark Adler and Jean-Loup Gailly used with permission from the free Info-ZIP implementation. LDAP software provided courtesy University of Michigan at Ann Arbor Copyright 1992-1996 Regents of the University of Michigan. All rights reserved. This product includes software developed by the Apache Group for use in the Apache HTTP server project http www.apache.org . Copyright 1995-1997 The Apache Group. All rights reserved. See text files included with the software or the PGP web site for further information. The software provided with this documentation is licensed to you for your individual use under the terms of the End User License Agreement and Limited Warranty provided with the software. The information in this document is subject to change without notice. Network Associates Inc. does not warrant that the information meets your requirements or