ISR News Story
Method for Efficient Source Authentication for Multicast Communications in Hybrid Satellite/Wireless Networks (ISR IP)
ISR intellectual property available to license
Inventors: Ayan Roy-Chowdhury, John Baras
Due to the limited processor power, storage capacity, and available energy of nodes in a hybrid wireless network, conventional schemes for authentication in group communication such as public-key cryptography, are not feasible. Therefore, authentication protocols based on symmetric cryptographic primitives like MAC are preferable. However, designing authentication protocols for group communication using symmetric cryptography is a significant challenge.
Researchers in the Institute of Systems Research at the University of Maryland, College Park have developed a novel source authentication protocol for hybrid networks that uses TESLA certificates. The proposed scheme is secure, fast, has low processing overhead, and consumes much less energy than digital signature algorithms. The protocol also avoids the assumption that the user nodes have some sort of security association established a priori, as many other conventional protocols assume.
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June 24, 2007