@misc{rfc6287,
    series =    {Request for Comments},
    number =    6287,
    howpublished =  {RFC 6287},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6287},
    url =       {https://www.rfc-editor.org/info/rfc6287},
    author =    {David M'Raihi and David Naccache and Johan Rydell and Siddharth Bajaj and Salah Machani},
    title =     {{OCRA: OATH Challenge-Response Algorithm}},
    pagetotal = 38,
    year =      2011,
    month =     jun,
    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. This document is not an Internet Standards Track specification; it is published for informational purposes.},
}