Title :
A Secure Group Key Management Scheme for Wireless Cellular Networks
Author :
Um, Hwayoung ; Delp, Edward J.
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN
Abstract :
In wireless networks, secure multicast protocols are difficult to implement efficiently due to the dynamic nature of the multicast group and scarcity of bandwidth at the receiving and transmitting ends. Mobility is one of the most distinct features to be considered in a wireless network. Moving users onto the key tree causes extra key management resources even though they are still in service. To take care of frequent handoff between wireless access networks, it is necessary to reduce the number of rekeying messages and the size of the messages. In this paper, we design a key management tree such that neighbors on the key tree are also physical neighbors on the cellular network. By tracking the user location, we localize the delivery of rekeying messages to the users who need them. This lessens the amount of traffic in wireless and wired intervals of the network. The group key management scheme uses a pre-positioned secret sharing scheme
Keywords :
cryptography; radio access networks; trees (mathematics); key management tree; secret sharing; secure group key management; wireless access networks; wireless cellular networks; Access control; Bandwidth; Communication system security; Computer networks; Cryptography; Data security; Land mobile radio cellular systems; Multicast protocols; Streaming media; Wireless networks;
Conference_Titel :
Information Technology: New Generations, 2006. ITNG 2006. Third International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
0-7695-2497-4
DOI :
10.1109/ITNG.2006.17