%% You should probably cite draft-ietf-tls-encrypt-then-mac instead of this I-D.
@techreport{gutmann-tls-encrypt-then-mac-03,
    number =    {draft-gutmann-tls-encrypt-then-mac-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-gutmann-tls-encrypt-then-mac/03/},
    author =    {Peter Gutmann},
    title =     {{Encrypt-then-MAC for TLS and DTLS}},
    pagetotal = 6,
    year =      2013,
    month =     jun,
    day =       29,
    abstract =  {This document describes a means of negotiating the use of the encrypt-then-MAC security mechanism in place of TLS'/DTLS' existing MAC-then-encrypt one, which has been the subject of a number of security vulnerabilities over a period of many years.},
}