@misc{cryptoeprint:2012:638,
    author = {Cai-xue Zhou},
    title = {Cryptanalysis and Improvement of a Multi-Receiver Generalized Signcryption Scheme},
    howpublished = {Cryptology ePrint Archive, Report 2012/638},
    year = {2012},
    url = {http://eprint.iacr.org/2012/638},
}