@misc{rfc6234,
    series =    {Request for Comments},
    number =    6234,
    howpublished =  {RFC 6234},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6234},
    url =       {https://www.rfc-editor.org/info/rfc6234},
    author =    {Tony Hansen and Donald E. Eastlake 3rd},
    title =     {{US Secure Hash Algorithms (SHA and SHA-based HMAC and HKDF)}},
    pagetotal = 127,
    year =      2011,
    month =     may,
    abstract =  {Federal Information Processing Standard, FIPS},
}