@misc{cryptoeprint:2005:426,
    author = {Zhenfeng Zhang  and  Dengguo Feng},
    title = {On the Security of a Certificateless Public-Key Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2005/426},
    year = {2005},
    url = {http://eprint.iacr.org/2005/426},
}