@misc{cryptoeprint:2010:333,
    author = {Zhengjun Cao},
    title = {Cryptanalysis of  Libert-Vergnaud Proxy Re-encryption Scheme},
    howpublished = {Cryptology ePrint Archive, Report 2010/333},
    year = {2010},
    url = {http://eprint.iacr.org/2010/333},
}