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The S/KEY One-Time Password System

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Description: Scholarly paper by Neil Haller on the original S/Key system. Links to many citations from the original paper.
CiteSeerX — The S/KEY One-Time Password System The S/KEY One-Time Password System (1994) In Proceedings of the Internet Society Symposium on Network and Distributed Systems @INPROCEEDINGS{Haller94thes/key,
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Page title:CiteSeerX — The S/KEY One-Time Password System
Keywords:CiteSeerX, Neil Haller
Description:CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Computing systems have been under increasingly sophisticated attack over the Internet and by using dial-up access ports. One form of attack is eavesdropping on network connections to obtain login id's and passwords of legitimate users. This information is used at a later time to attack the system. We have developed a prototype software system, the S/KEY TM one-time password system, to counter this type of attack and have been using it experimentally for external access to a research computer complex at Bellcore. The S/KEY system has several advantages compared with other one-time or multi-use authentication systems. The user's secret password never crosses the network during login or when executing other commands requiring authentication such as the UNIX passwd (change password) or su (change privilege) commands. No secret information is stored anywhere, including on the host being protected, and the underlying algorithm may be made public. The remote end (client) of this system can...
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