Skip to Main content Skip to Navigation
Preprints, Working Papers, ...

A New Framework for Privacy-Preserving Aggregation of Time-Series Data

Abstract : Aggregator-oblivious encryption is a useful notion put forward by Shi et al. in 2011 that allows an untrusted aggregator to periodically compute an aggregate value over encrypted data contributed by a set of users. Such encryption schemes find numerous applications, in particular in the context of privacy-preserving smart metering. This paper presents a general framework for constructing privacy-preserving aggregator-oblivious encryption schemes using a variant of Cramer-Shoup's paradigm of smooth projective hashing. This abstraction leads to new schemes based on a variety of complexity assumptions. It also improves upon existing constructions, providing schemes with shorter ciphertexts and better encryption times.
Document type :
Preprints, Working Papers, ...
Complete list of metadatas
Contributor : Marc Joye <>
Submitted on : Friday, July 31, 2015 - 7:56:39 PM
Last modification on : Saturday, March 16, 2019 - 5:10:08 PM
Document(s) archivé(s) le : Sunday, November 1, 2015 - 10:15:23 AM


Files produced by the author(s)


  • HAL Id : hal-01181321, version 1


Fabrice Benhamouda, Marc Joye, Benoit Libert. A New Framework for Privacy-Preserving Aggregation of Time-Series Data. 2015. ⟨hal-01181321v1⟩



Record views


Files downloads