@misc{cryptoeprint:2009:505,
    author = {Hai Huang, Zhenfu Cao},
    title = {Authenticated Key Exchange Protocols with Enhanced Freshness Properties},
    howpublished = {Cryptology ePrint Archive, Report 2009/505},
    year = {2009},
    url = {http://eprint.iacr.org/2009/505},
}