[Resource Topic] 2017/1215: Lattice-Based Public Key Searchable Encryption from Experimental Perspectives

Welcome to the resource topic for 2017/1215

Title:
Lattice-Based Public Key Searchable Encryption from Experimental Perspectives

Authors: Rouzbeh Behnia, Muslum Ozgur Ozmen, Attila A. Yavuz

Abstract:

Public key Encryption with Keyword Search (PEKS) aims in mitigating the impacts of data privacy versus utilization dilemma by allowing {\em any user in the system} to send encrypted files to the server to be searched by a receiver. The receiver can retrieve the encrypted files containing specific keywords by providing the corresponding trapdoors of these keywords to the server. Despite their merits, the existing PEKS schemes introduce a high end-to-end delay that may hinder their adoption in practice. Moreover, they do not scale well for large security parameters and provide no post-quantum security promises. In this paper, we propose two novel lattice-based PEKS schemes that offer a high computational efficiency along with better security assurances than that of the existing alternatives. Specifically, our NTRU-PEKS scheme achieves 18 times lower end-to-end delay than the most efficient pairing-based alternatives. Our LWE-PEKS offers provable security in the standard model with a reduction to the worst-case lattice problems. We fully implemented our NTRU-PEKS scheme and benchmarked its performance as deployed on Amazon Web Services cloud infrastructures.

ePrint: https://eprint.iacr.org/2017/1215

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