CCA-secure revocable identity-based encryption schemes with decryption key exposure resistance
type: Item
instance of: scholarly article
title: CCA-secure revocable identity-based encryption schemes with decryption key exposure resistance
zbMATH Open document ID: 1428.94078
DOI: 10.1504/IJACT.2017.086229
author: Yuu Ishida
author: Junji Shikata
author: Yodai Watanabe
published in: International Journal of Applied Cryptography
publication date: 2018-11-26T00:00:00Z
review text: Summary: Key revocation functionality is important for identity-based encryption (IBE) to manage users dynamically. Revocable IBE (RIBE) realises such revocation functionality with scalability. In PKC 2013, \textit{J. H. Seo} and \textit{K. Emura} [Lect. Notes Comput. Sci. 7778, 216--234 (2013; Zbl 1314.94092) first considered decryption key exposure resistance (DKER) as a new realistic threat, and proposed the first RIBE scheme with DKER. Their RIBE scheme is adaptively secure against chosen plaintext attacks (CPA), and there is no concrete RIBE scheme adaptively secure against chosen ciphertext attacks (CCA) even without DKER so far. In this paper, we first propose three constructions of adaptively CCA-secure RIBE schemes with DKER. The first and second schemes are based on an existing transformation, which is called a BCHK transformation, that a CPA-secure hierarchical IBE scheme can be transformed into a CCA-secure scheme. The third scheme is constructed via the KEM/DEM framework. Specifically, we newly propose a revocable identity-based key encapsulation mechanism (RIB-KEM), and we show a generic construction of a CCA-secure RIBE scheme from the RIB-KEM and a data encapsulation mechanism (DEM). The third scheme is more efficient than the first and second ones in terms of the ciphertext size.
Mathematics Subject Classification ID: 94A60
zbMATH DE Number: 6984952
zbMATH Keywords: CCA-security
zbMATH Keywords: revocable identity-based encryption
zbMATH Keywords: key encapsulation mechanism
zbMATH Keywords: complete subtree method
zbMATH Keywords: prime-order bilinear group
zbMATH Keywords: composite-order bilinear group
zbMATH Keywords: KEM/DEM framework
Wikidata QID: Q121438938
MaRDI profile type: Publication
full work available at URL: ijact.2017.086229
OpenAlex ID: W4230895451
description: scientific article; zbMATH DE number 6984952