6th International ICST Conference on Body Area Networks

Research Article

Improving Secret Key Generation Performance for On-Body Devices

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  • @INPROCEEDINGS{10.4108/icst.bodynets.2011.247062,
        author={Linjia YAO and Syed Ali and Vijay Sivaraman and Diethelm Ostry},
        title={Improving Secret Key Generation Performance for On-Body Devices},
        proceedings={6th International ICST Conference on Body Area Networks},
        publisher={ICST},
        proceedings_a={BODYNETS},
        year={2012},
        month={6},
        keywords={secret key agreement body area networks rssi},
        doi={10.4108/icst.bodynets.2011.247062}
    }
    
  • Linjia YAO
    Syed Ali
    Vijay Sivaraman
    Diethelm Ostry
    Year: 2012
    Improving Secret Key Generation Performance for On-Body Devices
    BODYNETS
    ICST
    DOI: 10.4108/icst.bodynets.2011.247062
Linjia YAO1,*, Syed Ali1, Vijay Sivaraman1, Diethelm Ostry2
  • 1: School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, Australia
  • 2: ICT Centre, CSIRO, Sydney
*Contact email: linjia.yao@student.unsw.edu.au

Abstract

In this paper, we undertake experiments to assess the feasibility of generating common secret keys between two bodyworn devices using the near-body channel. Deriving secret keys using the wireless channel is a practical and lightweight alternative to public-key key-agreement approaches. Our results indicate that key generation is good for dynamic scenarios where communicating devices are placed in non-line-of-sight positions on the body. Furthermore, we enhance existing key generation mechanisms by proposing a filtering method to reduce bit mismatch.