@misc{cryptoeprint:2010:312,
    author = {Qingfeng Cheng and Chuangui Ma},
    title = {Security weakness of two authenticated key exchange protocols from pairings},
    howpublished = {Cryptology ePrint Archive, Report 2010/312},
    year = {2010},
    url = {http://eprint.iacr.org/2010/312},
}