%% You should probably cite rfc9261 instead of this I-D.
@techreport{ietf-tls-exported-authenticator-02,
    number =    {draft-ietf-tls-exported-authenticator-02},
    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-tls-exported-authenticator/02/},
    author =    {Nick Sullivan},
    title =     {{Exported Authenticators in TLS}},
    pagetotal = 6,
    year =      2017,
    month =     jun,
    day =       21,
    abstract =  {This document describes a mechanism in Transport Layer Security (TLS) to provide an exportable proof of ownership of a certificate that can be transmitted out of band and verified by the other party.},
}