%0 Journal Article %T Novel Authentication & Authorization Management for Sensitive Information Privacy Protection Using Dynamic Key Based Group Key Management. %A Xianping Wu %A Huy Hoang Ngo %A Phu Dung Le %A Balasubramaniam Srinivasan %J International Journal of Computer Science & Applications %D 2009 %I Technomathematics Research Foundation %U http://www.tmrfindia.org/ijcsa/v6i36.pdf