1st International ICST Workshop on Security in Opportunistic and Social Networks

Research Article

A Key Management Solution for Overlay-Live-Streaming

  • @INPROCEEDINGS{10.1145/1461469.1461473,
        author={Mathias Fischer and Guenter Schaefer and Robert Schmidt and Thorsten Strufe},
        title={A Key Management Solution for Overlay-Live-Streaming},
        proceedings={1st International ICST Workshop on Security in Opportunistic and Social Networks},
        keywords={Peer-to-peer application-layer multicast content distribution key management LKH Iolus DH},
  • Mathias Fischer
    Guenter Schaefer
    Robert Schmidt
    Thorsten Strufe
    Year: 2008
    A Key Management Solution for Overlay-Live-Streaming
    DOI: 10.1145/1461469.1461473
Mathias Fischer1,*, Guenter Schaefer1,*, Robert Schmidt2,*, Thorsten Strufe3,*
  • 1: Technische Universität Ilmenau, Germany
  • 2: Denso Automotive Deutschland GmbH Eching, Germany
  • 3: Eurécom Sophia Antipolis, France
*Contact email: mathias.fischer@tu-ilmenau.de, guenter.schaefer@tu-ilmenau.de, r.schmidt@denso-auto.de, thorsten.strufe@eurecom.fr


Confidential communication of live-generated multimedia data distributed via application level multicast (ALM) still remains a mostly unaddressed subject even though some important usage scenarios, e.g. paid subscription services or personal video-streaming, are anticipated to gain more widespread use as the Internet continues to evolve into the common transport platform for all kinds of services. In this article, we examine the specific requirements for key management schemes to be used in ALM-based distribution systems and analyze existing key management approaches with respect to these requirements. Based on the results of this analysis, we design a new key management scheme that combines ideas of the Logical Key Hierarchy (LKH) protocol and the Iolus approach. We compare the resulting scheme to a simple approach that is based on pairwise keys between neighboring nodes without further key-hierarchy based optimization and that serves as a benchmark. Our results of a comparative simulation study clearly indicate the suitability of our scheme for ALM-based livestreaming.