%% You should probably cite rfc2451 instead of this I-D.
@techreport{ietf-ipsec-ciph-cbc-03,
    number =    {draft-ietf-ipsec-ciph-cbc-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-ipsec-ciph-cbc/03/},
    author =    {Roy Pereira and Robert L. Adams},
    title =     {{The ESP CBC-Mode Cipher Algorithms}},
    pagetotal = 14,
    year =      1998,
    month =     sep,
    day =       9,
    abstract =  {This document describes how to use CBC-mode cipher algorithms with the IPSec ESP (Encapsulating Security Payload) Protocol. It not only clearly states how to use certain cipher algorithms, but also how to use all CBC-mode cipher algorithms. {[}STANDARDS-TRACK{]}},
}