Title :
A hybrid key tree scheme for multicast to balance security and efficiency requirements
Author :
Duma, Claudiu ; Shahmehri, Nahid ; Lambrix, Patrick
Author_Institution :
Linkopings Universitet, Linkoping, Sweden
Abstract :
Security and efficiency of rekeying are crucial requirements for multicast key management. However, the two requirements pull in different directions and balancing them to meet the application needs is still an open issue. In this paper we introduce a hybrid key tree scheme to balance security, namely the resistance to collusion, and the efficiency. The resistance to collusion is measured by an integer parameter. The communication and the storage requirements for the controller depend on this parameter too, and they decrease as the resistance to collusion is relaxed. We analytically evaluate the efficiency of our scheme and compare with the previous work. The results show that our scheme allows a fine-tuning of security requirements versus efficiency requirements at run-time, which is not possible with the previous key management schemes.
Keywords :
multicast communication; public key cryptography; security of data; telecommunication security; collusion resistance; communication security; hybrid key tree; multicast communication; multicast key management; Application software; Communication system control; Costs; Electrical resistance measurement; Information security; Multicast communication; Runtime; Teleconferencing; Unicast; Web and internet services;
Conference_Titel :
Enabling Technologies: Infrastructure for Collaborative Enterprises, 2003. WET ICE 2003. Proceedings. Twelfth IEEE International Workshops on
Print_ISBN :
0-7695-1963-6
DOI :
10.1109/ENABL.2003.1231409
