@misc{cryptoeprint:2010:172,
    author = {Qixiang Mei， Bao Li，Xianhui Lu and Dingding Jia},
    title = {Chosen Ciphertext Secure Encryption over Semi-smooth Subgroup},
    howpublished = {Cryptology ePrint Archive, Report 2010/172},
    year = {2010},
    url = {http://eprint.iacr.org/2010/172},
}