%% You should probably cite rfc7905 instead of this I-D.
@techreport{ietf-tls-chacha20-poly1305-04,
    number =    {draft-ietf-tls-chacha20-poly1305-04},
    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-chacha20-poly1305/04/},
    author =    {Adam Langley and Wan-Teh Chang and Nikos Mavrogiannopoulos and Joachim Strombergson and Simon Josefsson},
    title =     {{ChaCha20-Poly1305 Cipher Suites for Transport Layer Security (TLS)}},
    pagetotal = 8,
    year =      2015,
    month =     dec,
    day =       16,
    abstract =  {This document describes the use of the ChaCha stream cipher and Poly1305 authenticator in the Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS) protocols. This document updates RFCs 5246 and 6347.},
}