@misc{cryptoeprint:2009:319,
    author = {Xiaofeng Chen and Haibo Tian and Fangguo Zhang},
    title = {Comments and Improvements on Chameleon Hashing Without Key Exposure Based on Factoring},
    howpublished = {Cryptology ePrint Archive, Report 2009/319},
    year = {2009},
    url = {http://eprint.iacr.org/2009/319},
}