Author, as appears in the article.: Farràs O; Ribes-González J
Department: Enginyeria Informàtica i Matemàtiques
URV's Author/s: Farràs Ventura, Oriol / Ribes Gonzalez, Jordi
Keywords: Subset keyword search Searchable encryption Public-key encryption with keyword search Identity-based encryption Conjunctive keyword search Attacks
Abstract: © 2019, Springer-Verlag GmbH Germany, part of Springer Nature. Public-key encryption with keyword search (PEKS) schemes enable public key holders to encrypt documents, while the secret key holder is able to generate queries for the encrypted data. In this paper, we present two PEKS schemes with extended functionalities. The first proposed scheme supports conjunctive queries. That is, it enables searching for encrypted documents containing a chosen list of keywords. We prove the computational consistency of our scheme, and we prove security under the asymmetric DBDH assumption. We show that it improves previous related schemes in terms of efficiency and in terms of index and trapdoor size. The second proposed scheme supports subset queries and some more general predicates. We prove the computational consistency of our scheme, and we prove our scheme secure under the p-BDHI assumption. We show that it improves previous related schemes in terms of efficiency and expressiveness. Moreover, unlike previous related schemes, it admits an arbitrary keyword space.
Thematic Areas: Software Safety, risk, reliability and quality Matemática / probabilidade e estatística Information systems Engenharias iv Computer science, theory & methods Computer science, software engineering Computer science, information systems Computer networks and communications Ciência da computação
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 16155262
Author's mail: jordi.ribes@urv.cat oriol.farras@urv.cat
Author identifier: 0000-0001-6329-7380 0000-0002-7495-5980
Record's date: 2023-02-22
Papper version: info:eu-repo/semantics/acceptedVersion
Papper original source: International Journal Of Information Security. 18 (5): 533-548
APA: Farràs O; Ribes-González J (2019). Provably secure public-key encryption with conjunctive and subset keyword search. International Journal Of Information Security, 18(5), 533-548. DOI: 10.1007/s10207-018-00426-7
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Entity: Universitat Rovira i Virgili
Journal publication year: 2019
Publication Type: Journal Publications
Repositori URV