@article {IOPORT.50184276,
    author       = {Zhang, Hui and Xu, Chunxiang and Sangi, Abdur Rashid},
    title        = {Two attacks on dutta's dynamic group key agreement protocol},
    year         = {2010},
    journal      = {IACR Cryptology ePrint Archive},
    volume       = {2010},
    pages        = {473},
    identifier   = {50184276},
}