University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Chosen-ciphertext secure multi-hop identity-based conditional proxy re-encryption with constant-size ciphertexts

Liang, Kaitai, Chu, Cheng-Kang, Tan, Xiao, Wong, Duncan S, Tang, Chunming and Zhou, Jianying (2014) Chosen-ciphertext secure multi-hop identity-based conditional proxy re-encryption with constant-size ciphertexts Theoretical Computer Science, 539. pp. 87-105.

Full text not available from this repository.

Abstract

Proxy Re-Encryption (PRE) allows one user to delegate the decryption rights of his/her ciphertexts to another user. Since the introduction of Multi-Hop Identity-Based PRE (MH-IBPRE) by Green and Ateniese, the ciphertext size and the decryption complexity grow linearly in the number of re-encryption “hops”. In this paper, for the first time, we propose an MH-IBPRE that maintains the (constant) ciphertext size and computational complexity regardless of the number of re-encryption hops. Moreover, our scheme is bidirectional and also supports conditional re-encryption. The scheme is proven secure against selective identity and chosen-ciphertext attacks and collusion resistant in the standard model. As of independent interest, we also show that the conditional re-encryption can also be extended to a set of conditions

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Computing Science
Authors :
NameEmailORCID
Liang, Kaitaik.liang@surrey.ac.ukUNSPECIFIED
Chu, Cheng-KangUNSPECIFIEDUNSPECIFIED
Tan, XiaoUNSPECIFIEDUNSPECIFIED
Wong, Duncan SUNSPECIFIEDUNSPECIFIED
Tang, ChunmingUNSPECIFIEDUNSPECIFIED
Zhou, JianyingUNSPECIFIEDUNSPECIFIED
Date : 19 June 2014
Identification Number : 10.1016/j.tcs.2014.04.027
Copyright Disclaimer : © 2014 Elsevier B.V. All rights reserved.
Uncontrolled Keywords : Conditional proxy re-encryption; Identity-based proxy re-encryption; Bilinear map; Chosen-ciphertext security; Constant size ciphertext
Depositing User : Jane Hindle
Date Deposited : 31 Oct 2017 15:08
Last Modified : 31 Oct 2017 15:08
URI: http://epubs.surrey.ac.uk/id/eprint/844715

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800