%% You should probably cite rfc3310 instead of this I-D.
@techreport{ietf-sip-digest-aka-03,
    number =    {draft-ietf-sip-digest-aka-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-sip-digest-aka/03/},
    author =    {Vesa Torvinen and Jari Arkko and Aki Niemi},
    title =     {{Hypertext Transfer Protocol (HTTP) Digest Authentication Using Authentication and Key Agreement (AKA)}},
    pagetotal = 18,
    year =      2002,
    month =     may,
    day =       20,
    abstract =  {The Hypertext Transfer Protocol (HTTP) Authentication Framework includes two authentication schemes: Basic and Digest. Both schemes employ a shared secret based mechanism for access authentication. The Authentication and Key Agreement (AKA) mechanism performs user authentication and session key distribution in Universal Mobile Telecommunications System (UMTS) networks. AKA is a challenge- response based mechanism that uses symmetric cryptography. This memo specifies an AKA based one-time password generation mechanism for HTTP Digest access authentication.},
}