%% You should probably cite rfc9382 instead of this I-D.
@techreport{irtf-cfrg-spake2-04,
    number =    {draft-irtf-cfrg-spake2-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-irtf-cfrg-spake2/04/},
    author =    {Watson Ladd and Benjamin Kaduk},
    title =     {{SPAKE2, a PAKE}},
    pagetotal = 7,
    year =      2017,
    month =     oct,
    day =       17,
    abstract =  {This Internet-Draft describes SPAKE2, a secure, efficient password based key exchange protocol.},
}