@misc{cryptoeprint:2010:264,
    author = {Hugo Krawczyk},
    title = {Cryptographic Extraction and Key Derivation: The HKDF Scheme},
    howpublished = {Cryptology ePrint Archive, Report 2010/264},
    year = {2010},
    url = {http://eprint.iacr.org/2010/264},
}