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Privacy friendly aggregation of smart meter readings, even when meters crash

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Author: Hoepman, J.H.
Type:article
Date:2017
Publisher: Association for Computing Machinery, Inc
Source:2nd Workshop on Cyber-Physical Security and Resilience in Smart Grids, CPSR-SG 2017. 21 April 2017, 3-7
Identifier: 762769
ISBN: 9781450349789
Keywords: Fault tolerance · Privacy friendly aggregation · Electric power transmission networks · Smart meters · Basic protocols · Consensus protocols · Crash failures · Lower bounds · Meter readings · Privacy problems · Smart grid · Smart power grids · ICT · CSR - Cyber Security & Robustness · TS - Technical Sciences

Abstract

A well studied privacy problem in the area of smart grids is the question of how to aggregate the sum of a set of smart meter readings in a privacy friendly manner, i.e., in such a way that individual meter readings are not revealed to the adversary. Much less well studied is how to deal with arbitrary meter crashes during such aggregation protocols: current privacy friendly aggregation protocols cannot deal with these type of failures. Such failures do happen in practice, though. We therefore propose two privacy friendly aggregation protocols that tolerate such crash failures, up to a predefined maximum number of smart meters. The basic protocol tolerates meter crashes at the start of each aggregation round only. The full, more complex, protocol tolerates meter crashes at arbitrary moments during an aggregation round. It runs in a constant number of phases, cleverly avoiding the otherwise applicable consensus protocol lower bound. ACM Special Interest Group on Embedded Systems (SIGBED); IEEE CS; IEEE Signal Processing Society