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Unformatted text preview: r financial transactions. They can see where you buy your gas, where you buy your food, who you call on the telephone—all without leaving their computer terminals. People need a way to protect their anonymity in order to protect their privacy. Previous Table of Contents Next Products | Contact Us | About Us | Privacy | Ad Info | Home Use of this site is subject to certain Terms & Conditions, Copyright © 1996-2000 EarthWeb Inc. All rights reserved. Reproduction whole or in part in any form or medium without express written permission of EarthWeb is prohibited. Read EarthWeb's privacy statement. To access the contents, click the chapter and section titles. Applied Cryptography, Second Edition: Protocols, Algorthms, and Source Code in C (cloth)
Brief Full Advanced Search Search Tips (Publisher: John Wiley & Sons, Inc.) Author(s): Bruce Schneier ISBN: 0471128457 Publication Date: 01/01/96 Search this book:
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----------- Happily, there is a complicated protocol that allows for authenticated but untraceable messages. Lobbyist Alice can transfer digital cash to Congresscritter Bob so that newspaper reporter Eve does not know Alice’s identity. Bob can then deposit that electronic money into his bank account, even though the bank has no idea who Alice is. But if Alice tries to buy cocaine with the same piece of digital cash she used to bribe Bob, she will be detected by the bank. And if Bob tries to deposit the same piece of digital cash into two different accounts, he will be detected—but Alice will remain anonymous. Sometimes this is called anonymous digital cash to differentiate it from digital money with an audit trail, such as credit cards. A great social need exists for this kind of thing. With the growing use of the Internet for commercial transactions, there is more call for network-based privacy and anonymity in business. (There are good reasons people are reluctant to send their credit card numbers over the Internet.) On the other hand, banks an...
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