4th International ICST Conference on Wireless Internet

Research Article

Security challenges in seamless mobility: how to "handover" the keys?

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  • @INPROCEEDINGS{10.4108/ICST.WICON2008.4790,
        author={Katrin Hoeper and Lidong Chen and Antonio Izquierdo and Nada Golmie},
        title={Security challenges in seamless mobility: how to "handover" the keys?},
        proceedings={4th International ICST Conference on Wireless Internet},
        publisher={ICST},
        proceedings_a={WICON},
        year={2010},
        month={5},
        keywords={Security Key Management Seamless Mobility},
        doi={10.4108/ICST.WICON2008.4790}
    }
    
  • Katrin Hoeper
    Lidong Chen
    Antonio Izquierdo
    Nada Golmie
    Year: 2010
    Security challenges in seamless mobility: how to "handover" the keys?
    WICON
    ICST
    DOI: 10.4108/ICST.WICON2008.4790
Katrin Hoeper1,*, Lidong Chen1,*, Antonio Izquierdo2,*, Nada Golmie2,*
  • 1: National Institute of Standards and Technology (NIST) Computer Security Division Gaithersburg, MD, USA
  • 2: National Institute of Standards and Technology (NIST) Advanced Networking Technologies Division Gaithersburg, MD, USA
*Contact email: khoeper@nist.gov, llchen@nist.gov, aizquier@nist.gov, ngolmie@nist.gov

Abstract

In this paper, we discuss key management challenges for seamless handovers across heterogeneous wireless networks. We focus on utilizing existing keying material from previ- ous access authentications to expedite network entry. For a seamless handover, keys must be available at the target network at the time of the handover. Currently, industry is still exploring possible ways to handle keys for mobility. This paper identi¯es the challenges of secure derivation and timely distribution of such keys. We discuss solutions for intra- and inter-technology handovers within the same net- work and between networks with roaming agreements. The presented solutions include di®erent types of handover key hierarchies and key distribution protocols. In addition, we analyze the tradeo®s between security and performance in the discussed solutions.