Please review these documentsĬarefully, as they describe your rights and restrictions with respect This document is subject to BCP 78 and the IETF Trust's Legal Information about the current status of this document, any errata,Īnd how to provide feedback on it may be obtained atĬopyright (c) 2011 IETF Trust and the persons identified as the Not all documentsĪpproved by the IESG are a candidate for any level of Internet Internet Engineering Steering Group (IESG). Received public review and has been approved for publication by the It represents the consensus of the IETF community. This document is a product of the Internet Engineering Task Force This document is not an Internet Standards Track specification it is Interoperability across commercial and open-source implementations. TheĪuthors believe that a common and shared algorithm will facilitateĪdoption of two-factor authentication on the Internet by enabling Wi-Fi network logon to transaction-oriented Web applications. The proposed algorithm can be used across a wide range of networkĪpplications, from remote Virtual Private Network (VPN) access and Provides short-lived OTP values, which are desirable for enhanced A time-based variant of the OTP algorithm The present work bases the movingįactor on a time value. HOTP algorithm specifies an event-based OTP algorithm, where the This document describes an extension of the One-Time Password (OTP)Īlgorithm, namely the HMAC-based One-Time Password (HOTP) algorithm,Īs defined in RFC 4226, to support the time-based moving factor. TOTP: Time-Based One-Time Password Algorithm Request for Comments: 6238 Verisign, Inc. Internet Engineering Task Force (IETF) D.
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