Cryptology ePrint Archive: Report 2012/692

Generic Constructions of Integrated PKE and PEKS

Yu Chen and Jiang Zhang and Zhenfeng Zhang and Dongdai Lin

Abstract: In this paper we investigate the topic of integrated public-key encryption (PKE) and public-key encryption with keyword search (PEKS) schemes (PKE-PEKS as shorthand). We first formalize the strongest security notion to date for PKE-PEKS schemes, named joint CCA-security. We then propose two simple constructions of jointly CCA-secure PKE- PEKS schemes from anonymous (hierarchical) identity-based encryption schemes. Besides, we also define the notion of consistency for PKE-PEKS schemes, as well as revisit its related notions (including consistency of PEKS schemes, robustness and collision-freeness of IBE schemes), which may be of independent interest.

Category / Keywords: PEKS, joint CCA security, robustness, collision-freeness, consistency,

Original Publication (with minor differences): Designs, Codes and Cryptography

Date: received 10 Dec 2012, last revised 1 Dec 2014

Contact author: cycosmic at gmail com

Available format(s): PDF | BibTeX Citation

Note: Security proofs are presented in a more rigorous way.

Version: 20141201:074637 (All versions of this report)

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