A flexible category-based collusion-resistant key management scheme for multicast
2003 (English)In: Proceedings of the 18th IFIP International Information Security (Sec '2003), 2003, 133-144 p.Conference paper (Refereed)
Current key management schemes for multicast provide either no resistance to collusion or perfect resistance to collusion. However, resistance to collusion is achieved at the expense of efficiency in terms of the number of transmissions and the number of keys that are used. We argue that applications may have certain assumptions regarding the users and their access to the multicast channel that may be used to provide a broader range of choices for balancing efficiency against resistance to collusion.
We formalize the collusion requirement based upon the users' access to the multicast channel. Different user categorizations give different degrees of collusion resistance and we show that the existing work has focused on special cases of user categorizations. Further, we go on to propose and evaluate a flexible key management strategy for the general case where the accessibility relation defines the order of exclusion of the categories. The theoretical and experimental results show that our scheme has good performance regarding transmissions and keys per controller.
Place, publisher, year, edition, pages
2003. 133-144 p.
, IFIP — The International Federation for Information Processing, ISSN 1868-4238 ; 122
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-59903DOI: 10.1007/978-0-387-35691-4_12ISBN: 978-1-4757-6489-5ISBN: 978-0-387-35691-4OAI: oai:DiVA.org:liu-59903DiVA: diva2:354010
18th IFIP International Information Security Conference, 26-28 May 2003, Athens, Greece