%% You should probably cite draft-hummen-hip-middle-puzzle-01 instead of this revision.
@techreport{hummen-hip-middle-puzzle-00,
    number =    {draft-hummen-hip-middle-puzzle-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-hummen-hip-middle-puzzle/00/},
    author =    {Rene Hummen and Martin Henze},
    title =     {{HIP Middlebox Puzzle Offloading and End-host Notification}},
    pagetotal = 13,
    year =      2012,
    month =     jul,
    day =       9,
    abstract =  {The Host Identity Protocol {[}RFC5201{]} is a secure signaling protocol with a cryptographic namespace. It provides the communicating peers with a cryptographic puzzle mechanism to protect against Denial of Service (DoS) attacks targeting its computation and memory overhead. This document specifies an extension that enables middleboxes to assist in the choice of the puzzle difficulty as well as in solving the puzzle on behalf of the host.},
}