OCRA: OATH Challenge-Response Algorithm
RFC 6287
Document | Type |
RFC - Informational
(June 2011; Errata)
Was draft-mraihi-mutual-oath-hotp-variants (individual in sec area)
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Authors | Mountain View , David Naccache , Johan Rydell , Siddharth Bajaj , Salah Machani | ||
Last updated | 2020-01-21 | ||
Stream | Internet Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized with errata bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6287 (Informational) | |
Action Holders |
(None)
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Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Sean Turner | ||
IESG note | Hannes Tschofenig (Hannes.Tschofenig@gmx.net) is the document shepherd. | ||
Send notices to | Hannes.Tschofenig@gmx.net, dmraihi@verisign.com |
Internet Engineering Task Force (IETF) D. M'Raihi Request for Comments: 6287 Verisign, Inc. Category: Informational J. Rydell ISSN: 2070-1721 Portwise, Inc. S. Bajaj Symantec Corp. S. Machani Diversinet Corp. D. Naccache Ecole Normale Superieure June 2011 OCRA: OATH Challenge-Response Algorithm Abstract This document describes an algorithm for challenge-response authentication developed by the Initiative for Open Authentication (OATH). The specified mechanisms leverage the HMAC-based One-Time Password (HOTP) algorithm and offer one-way and mutual authentication, and electronic signature capabilities. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6287. Copyright Notice Copyright (c) 2011 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents M'Raihi, et al. Informational [Page 1] RFC 6287 OCRA June 2011 carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction ....................................................3 2. Notation and Terminology ........................................3 3. Algorithm Requirements ..........................................3 4. OCRA Background .................................................4 4.1. HOTP Algorithm .............................................4 5. Definition of OCRA ..............................................5 5.1. DataInput Parameters .......................................5 5.2. CryptoFunction .............................................7 6. The OCRASuite ...................................................8 6.1. Algorithm ..................................................9 6.2. CryptoFunction .............................................9 6.3. DataInput ..................................................9 6.4. OCRASuite Examples ........................................10 7. Algorithm Modes for Authentication .............................10 7.1. One-Way Challenge-Response ................................11 7.2. Mutual Challenge-Response .................................12 7.3. Algorithm Modes for Signature .............................13 7.3.1. Plain Signature ....................................13 7.3.2. Signature with Server Authentication ...............14 8. Security Considerations ........................................16 8.1. Security Analysis of OCRA .................................16 8.2. Implementation Considerations .............................17 9. Conclusion .....................................................18 10. Acknowledgements ..............................................18 11. References ....................................................19 11.1. Normative References .....................................19 11.2. Informative References ...................................19 Appendix A. Reference Implementation ..............................20 Appendix B. Test Vectors Generation ...............................26 Appendix C. Test Vectors ..........................................33 C.1. One-Way Challenge Response .................................34Show full document text