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A One-Time Password System
RFC 1938

Revision differences

Document history

Date By Action
2026-05-20
(System) Changed metadata: changed keywords to '['OTP', 'authentication', 'S/KEY']' from '[]'
2026-05-20
(System) Metadata update from RFC Editor
2026-05-20
(System) Changed author "C. Metz": changed name from "Craig Metz" to "C. Metz", cleared country (was "Washington, DC, 20375-5337, USA")
2026-05-20
(System) Changed author "N. Haller": changed name from "Neil Haller" to "N. Haller", cleared country (was "Morristown, NJ, 07960-6438, USA")
2026-05-20
(System) Metadata update from RFC Editor
2017-05-16
(System) Changed document authors from "Christopher Metz, Neil Haller, Craig Metz" to "Neil Haller, Craig Metz"
1996-05-14
(System) Document has expired
1996-05-01
(System) RFC published