Plug-In Privacy for Smart Metering Billing

  • Marek Jawurek
  • Martin Johns
  • Florian Kerschbaum
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6794)

Abstract

Traditional electricity meters are replaced by Smart Meters in customers’ households. Smart Meters collect fine-grained utility consumption profiles from customers, which in turn enables the introduction of dynamic, time-of-use tariffs. However, the fine-grained usage data that is compiled in this process also allows to infer the inhabitant’s personal schedules and habits. We propose a privacy-preserving protocol that enables billing with time-of-use tariffs without disclosing the actual consumption profile to the supplier. Our approach relies on a zero-knowledge proof based on Pedersen Commitments performed by a plug-in privacy component that is put into the communication link between Smart Meter and supplier’s back-end system. We require no changes to the Smart Meter hardware and only small changes to the software of Smart Meter and back-end system. In this paper we describe the functional and privacy requirements, the specification and security proof of our solution and give a performance evaluation of a prototypical implementation.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Marek Jawurek
    • 1
  • Martin Johns
    • 1
  • Florian Kerschbaum
    • 1
  1. 1.SAP ResearchUSA

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