WEBSTERS
`NEW W@RLD"
`
`DICTIONARY
`
`________.........__.._ of .___._______
`COMPUTER
`
`TERMS
`
`SIXTH EDITION
`
`By Bryan Pfcgfienbeigrer, Ph.D.
`
`RPX Exhibit 1209
`
`RPX Exhibit 1209
`RPX v. DAE
`
`

`
`Webster’s New WorldTM
`
`Dictionary of Computer Terms, 6th Edition
`
`Copyright © 1997 by
`Simon 8c Schuster, Inc.
`
`All rights reserved
`including the right of reproduction
`in whole or in part in any form
`
`Macmillan General Reference
`
`A Simon 8c Schuster Macmillan Company
`1633 Broadway
`New York, NY 10019-6785
`
`Macmillan Publishing books may be purchased for business or
`sales promotional use. For information please write: Special
`Markets Department, Macmillan Publishing USA,
`1633 Broadway, New York, NY 10019.
`
`AWebster’s New Wo1'ldTM Book
`
`MACMILLAN is a registered trademark of Macmillan, Inc.
`
`WEBSTERIS NEW WORLD DICTIONARY IS 21 registered trade-
`mark of Simon 85 Schuster, Inc.
`
`Library of Congress Catalog Card Number: 97-80220
`
`ISBN: O—O2—861890—4
`
`'
`
`Manufactured in the United States of America
`
`234567
`
`9789900102
`
`

`
`470 S-HTTP
`
`ms maieua mamammeueamcawuqmiawmneiius Cndel
`(cid:3) (cid:55)(cid:75)(cid:76)(cid:86)(cid:3)(cid:80)(cid:68)(cid:87)(cid:72)(cid:85)(cid:76)(cid:68)(cid:79)(cid:3)(cid:80)(cid:68)(cid:92)(cid:3)(cid:69)(cid:72)(cid:3)(cid:83)(cid:85)(cid:82)(cid:87)(cid:72)(cid:70)(cid:87)(cid:72)(cid:71)(cid:3)(cid:69)(cid:92)(cid:3)(cid:38)(cid:82)(cid:83)(cid:92)(cid:85)(cid:76)(cid:74)(cid:75)(cid:87)(cid:3)(cid:79)(cid:68)(cid:90)(cid:3)(cid:11)(cid:55)(cid:76)(cid:87)(cid:79)(cid:72)(cid:3)(cid:20)(cid:26)(cid:3)(cid:56)(cid:17)(cid:54)(cid:17)(cid:3)(cid:38)(cid:82)(cid:71)(cid:72)(cid:12)(cid:3)
`
`S-HTTP Acronym for Secure I-IyperTeXt Transport Protocol.
`An extension of the I/Virld I/I/{de I/I/ebs (I/VWI/V) Hypeflext "Transport
`
`Protocol (HTTP) that supports secure commercial transactions on
`the Web. Secure HTTP provides this support in two ways: by
`assuring vendors that the customers attempting to buy the ven-
`dors’ wares are who they say they are (authentication) and by
`encrypting sensitive information (such as credit—card numbers) so
`that it cannot be intercepted while en route. Secure HTTP was
`developed by Enterprise Integration Technology (EIT) and the
`National Cerzterfor S1rtper'ccm1puter/l_pplicat1'on3 (NCS/1), with subse-
`quent commercial development by Terisa Systems. Netscape
`Comrmmicatlorzs developed a competing security technology, the
`Secure Sockets Layer (SSL) protocol.Although S-HTTP is still
`used by some I/Vel) servers, SSL has emerged as the clear de facto
`stand~dand for good reason. S-HTTP is an application—layer pro-
`tocol, which means that it cannot support secure, encrypted
`exchange of other types of data, including FTP or NNTP
`IBSOUICCS.
`
`Shugart Associates Standard Interface (SASI) An early»-
`1980s standard for connecting hard dfsles to personal computers.
`SASI later became the Small Computer System Irzterface (SCSI)
`standard.
`
`sig Comnion abbreviation for sigriatme.
`
`SIG See special interest group.
`
`signal The portion of a transmission that coherently represents
`information, unlike the random and meaningless line noise that
`
`occurs in the transmission channel.
`
`In Usenet, the ratio between meaning-
`signal—to—noise ratio
`ful content and noise (ranting, raving, andflaming).A good
`newsgroup has a high signal—to—noise ratio; a poor newsgroup has
`a low one. A major advantage of moderated newsgroztps is to ensure
`a high signal—to—noise ratio. The term was originally used in
`electrical engineering to describe the ratio ofinformation to
`background noise in an electronic circuit.
`
`1. In e-mail and Usenet newsgroups, a brief file (of
`signature
`approximately three or four lines) that contains the message
`senders name, organization, address, e—mail address, and (option-
`ally) telephone numbers.You can configure most systems to add
`this file automatically at the end of each message you send.
`Netiquette advises against long, complicated signatures, especially