provides the ability to verify the sender and the recipient of electronic messages, protecting against E-commerce fraud, corporate espionage, and the theft of intellectual property. D 2003 Elsevier Science B.V. All rights reserved. Keywords: Cryptography; Digital security; Digital signatures; E-commerce; Electronic security; Encryption; Internet privacy; Public Key Infrastructure, PKI 1. Introduction As technology increasingly plays a key role in how people communicate and do business, the authentication…
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