@misc{cryptoeprint:2013:100,
    author = {Niu Liu and Shaohua Tang and Lingling Xu},
    title = {Attacks and Comments on Several Recently Proposed Key Management Schemes},
    howpublished = {Cryptology ePrint Archive, Report 2013/100},
    year = {2013},
    url = {http://eprint.iacr.org/2013/100},
}