%% You should probably cite rfc7685 instead of this I-D.
@techreport{ietf-tls-padding-04,
    number =    {draft-ietf-tls-padding-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-ietf-tls-padding/04/},
    author =    {Adam Langley},
    title =     {{A Transport Layer Security (TLS) ClientHello Padding Extension}},
    pagetotal = 4,
    year =      2015,
    month =     sep,
    day =       8,
    abstract =  {This memo describes a Transport Layer Security (TLS) extension that can be used to pad ClientHello messages to a desired size.},
}