Ecole d'ingénieur et centre de recherche en Sciences du numérique

Scalable key distribution for secure multicast

Pannetrat, Alain;Molva, Refik

Research report RR-98-044, also Master thesis, DEA RSD Université de Nice Sophia Antipolis, June 1998

This report presents and analyzes possible solutions for key distribution in a multicast group. Unlike, two-party security that is a well studied field, multiparty communications offer some interesting problems open for research. For key distribution in a multicast group, the biggest problem we have holds in one word : scalability. Scalable multicast protocols call for a security scheme that avoids the sharing of secret keying material among the recipients. In the proposed model the source transmits a unique message on the multicast tree but each recipient or sub-group of recipients uses different keying material to get accross the protected multicast channel. We suggest several protocols based on extensions of classical cryptographic functions. The first one is a simple XOR scheme and the two other schemes are based respectively on ElGamal and RSA.

Document Bibtex

Titre:Scalable key distribution for secure multicast
Type:Rapport
Langue:English
Ville:
Date:
Département:Sécurité numérique
Eurecom ref:385
Copyright: © EURECOM. Personal use of this material is permitted. The definitive version of this paper was published in Research report RR-98-044, also Master thesis, DEA RSD Université de Nice Sophia Antipolis, June 1998 and is available at :
Bibtex: @techreport{EURECOM+385, year = {1998}, title = {{S}calable key distribution for secure multicast}, author = {{P}annetrat, {A}lain and {M}olva, {R}efik}, number = {EURECOM+385}, month = {06}, institution = {Eurecom}, url = {http://www.eurecom.fr/publication/385},, }
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