@misc{cryptoeprint:2004:040,
    author = {Lizhen Yang, Kefei Chen},
    title = {Cryptanalysis of a timestamp-based password authentication scheme},
    howpublished = {Cryptology ePrint Archive, Report 2004/040},
    year = {2004},
    url = {http://eprint.iacr.org/2004/040},
}