Algorithm for updating key forms the basis for any group key management (GKM) system. Existing hierarchical key tree based GKMs are complex, having high computational and communication overhead complexities up to O(logn). In this paper an improved multicast key management (MKM) system is presented, in which only few keys used for encrypting group key are renewed with both backward and forward secrecy being perfectly guaranteed. Furthermore, a mechanism named OWFDL (one-way function and double-lock encryption based) was introduced to reduce the complexities, in which an efficient algorithm of rekeying the group when many members join and leave in a batch interval is proposed. The results show that the OWFDL scheme can reduce both to O(1), which assures perfect multicast secrecy, that is not possible with the previous key management schemes.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.