%% You should probably cite draft-ietf-tls-curve25519 instead of this I-D.
@techreport{josefsson-tls-curve25519-01,
    number =    {draft-josefsson-tls-curve25519-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-josefsson-tls-curve25519/01/},
    author =    {Simon Josefsson},
    title =     {{Elliptic Curve Diffie-Hellman Key Agreement using Curve25519 for Transport Layer Security (TLS)}},
    pagetotal = 7,
    year =      2013,
    month =     sep,
    day =       24,
    abstract =  {This document specifies the use of Curve25519 for key exchange in the Transport Layer Security (TLS) protocol.},
}