@misc{cryptoeprint:2012:190,
    author = {Ding Wang and Chun-guang Ma},
    title = {On the Security of an Improved Password Authentication Scheme Based on ECC},
    howpublished = {Cryptology ePrint Archive, Report 2012/190},
    year = {2012},
    url = {http://eprint.iacr.org/2012/190},
}