CUPPENS Frédéric¹, CUPPENS-BOULAHIA Nora¹, THOMAS Julien¹

Communication dans une conférence à comité de lecture

CRiSIS'2007 : International Conference on Risks and Security of Internet and Systems, colocated with IEEE GIIS, 02 july 2007, Marrakech, Morocco, 2007

2007

We present and analyse a secure protocol for group management, in large and dynamic ad hoc networks. The protocol we suggest relies on the TGDH protocol. In comparison with the previous solution, our algorithm helps to uniformly dispatch the group key calculus on each node, and the global cryptographic tree is optimized. Moreover, we propose an authentication algorithm. Our algorithm provides several well-known security properties, such as nodes authentication, messages freshness, passive attacks resistance and known key attack resistance.

1 : RSM - Dépt. Réseaux, Sécurité et Multimédia (Institut Télécom-Télécom Bretagne)

Ad-hoc networks, Authentication, PKI, Group management, Protocols

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