Key management schemes for peer-to-peer multimedia streaming overlay networks

Naranjo, J.A.M.;Lo pez-Ramos, J.A.;Casado, L.G.
(2009) Information Security Theory and Practice. Smart Devices, Pervasive Systems, and Ubiquitous Networks. Third IFIP WG11.2 International Workshop, WISTP 2009 — Location: Brussels, Belgium (1.September.2009)

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  • Naranjo, J.A.M.
    Author
  • Lo pez-Ramos, J.A.
    Author
  • Casado, L.G.
    Author
Abstract
Key distribution for multimedia live streaming peer-to-peer overlay networks is a field still in its childhood stage. A scheme designed for networks of this kind must seek security and efficiency while keeping in mind the following restrictions: limited bandwidth, continuous playing, great audience size and clients churn. This paper introduces two novel schemes that allow a trade-off between security and efficiency by allowing to dynamically vary the number of levels used in the key hierarchy. These changes are motivated by great variations in audience size, and initiated by decision of the Key Server. Additionally, a comparative study of both is presented, focusing on security and audience size. Results show that larger key hierarchies can supply bigger audiences, but offer less security against statistical attacks. The opposite happens for shorter key hierarchies.
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Naranjo, J. A. M., Lo pez-Ramos, J. A., & Casado, L. G. (2009). Key management schemes for peer-to-peer multimedia streaming overlay networks. In Markowitch, O.; Bilas, A.; Hoepman, J.-H.; Mitchell, C.J.; Quisquater, J.-J.; (ed.), Information Security Theory and Practice. Smart Devices, Pervasive Systems, and Ubiquitous Networks. Third IFIP WG11.2 International Workshop, WISTP 2009 (p. p. 128-142). Springer verlag. https://doi.org/10.1007/978-3-642-03944-7_10