Privacy-preserving smart metering revisited |
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Authors: | Alfredo Rial George Danezis Markulf Kohlweiss |
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Affiliation: | 1.University of Luxembourg,Esch-sur-Alzette,Luxembourg;2.University College London,London,UK;3.Microsoft Research,Cambridge,UK |
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Abstract: | Privacy-preserving billing protocols are useful in settings where a meter measures user consumption of some service, such as smart metering of utility consumption, pay-as-you-drive insurance and electronic toll collection. In such settings, service providers apply fine-grained tariff policies that require meters to provide a detailed account of user consumption. The protocols allow the user to pay to the service provider without revealing the user’s consumption measurements. Our contribution is twofold. First, we propose a general model where a meter can output meter readings to multiple users, and where a user receives meter readings from multiple meters. Unlike previous schemes, our model accommodates a wider variety of smart metering applications. Second, we describe a protocol based on polynomial commitments that improves the efficiency of previous protocols for tariff policies that employ splines to compute the price due. |
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