%% You should probably cite rfc7616 instead of this I-D.
@techreport{ietf-httpauth-digest-03,
    number =    {draft-ietf-httpauth-digest-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-httpauth-digest/03/},
    author =    {Rifaat Shekh-Yusef and David Ahrens and Sophie Bremer},
    title =     {{HTTP Digest Access Authentication}},
    pagetotal = 28,
    year =      2014,
    month =     jan,
    day =       19,
    abstract =  {HTTP provides a simple challenge-response authentication mechanism that may be used by a server to challenge a client request and by a client to provide authentication information. This document defines the HTTP Digest Authentication scheme that may be used with the authentication mechanism.},
}