Publication Type

Journal Article

Publication Date

3-2017

Abstract

We present a public key encryption scheme for relational databases (PKDE) thatallows the owner to control the execution of cross-relation joins on an outsourcedserver. The scheme allows anyone to deposit encrypted records in a database onthe server. Thereafter, the database owner may authorize the server to join anytwo relations to identify matching records across them, while preventing self-joinsthat would reveal information on records that are unmatched in the join. Thesecurity of our construction is formally proved in the random oracle model basedon the computational bilinear Diffie-Hellman assumption. Specifically, before arelation is joined, its encrypted records enjoy IND-CCA2 security; after a join,our scheme offers One-Way CCA2 security protection on the records. Our PKDEconstruction is shown to outperform the only existing

Keywords

Database security, Data encryption, Controlled join, Equality test, Private set intersection, Data outsourcing

Discipline

Computer Sciences | Databases and Information Systems

Research Areas

Data Management and Analytics

Publication

Computer Journal

Volume

60

Issue

4

ISSN

0010-4620

Identifier

10.1093/comjnl/bxw083

Publisher

Oxford University Press (OUP): Policy A - Oxford Open Option A

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Additional URL

https://doi.org/10.1093/comjnl/bxw083

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