%% You should probably cite draft-ietf-lamps-documentsigning-eku instead of this I-D.
@techreport{ito-documentsigning-eku-02,
    number =    {draft-ito-documentsigning-eku-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-ito-documentsigning-eku/02/},
    author =    {Tadahiko Ito and Tomofumi Okubo and Sean Turner},
    title =     {{General Purpose Extended Key Usage (EKU) for Document Signing X.509 Certificates}},
    pagetotal = 8,
    year =      2021,
    month =     nov,
    day =       7,
    abstract =  {{[}RFC5280{]} specifies several extended key usages for X.509 certificates. This document defines a general purpose document signing extended key usage for X.509 public key certificates which restricts the usage of the certificates for document signing.},
}