%% You should probably cite rfc4537 instead of this I-D.
@techreport{zhu-kerb-enctype-nego-04,
    number =    {draft-zhu-kerb-enctype-nego-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-zhu-kerb-enctype-nego/04/},
    author =    {Paul J. Leach and Karthik Jaganathan and Larry Zhu},
    title =     {{Kerberos Cryptosystem Negotiation Extension}},
    pagetotal = 6,
    year =      2005,
    month =     oct,
    day =       24,
    abstract =  {This document specifies an extension to the Kerberos protocol as defined in RFC 4120, in which the client can send a list of supported encryption types in decreasing preference order, and the server then selects an encryption type that is supported by both the client and the server. {[}STANDARDS-TRACK{]}},
}