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A CCA-Secure Identity-Based Conditional Proxy Re-Encryption without Random Oracles

(2012) A CCA-Secure Identity-Based Conditional Proxy Re-Encryption without Random Oracles In: ICISC: International Conference on Information Security and Cryptology Information Security and Cryptology – ICISC 2012 15th International Conference, 28-30 Nov. 2012, Seoul, Korea.

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Abstract

Although a few unidirectional single-hop Identity-Based Proxy Re-Encryption (IBPRE) systems are available in the literature, none of them is CCA secure in the standard model. Besides, they can not support conditional re-encryption property, which allows a delegator to specify a condition for ciphertexts so that the proxy can re-encrypt ciphertexts only if the re-encryption key corresponding to the same condition is given. This paper, for the first time, proposes a new unidirectional single-hop Identity-Based Conditional Proxy Re-Encryption (IBCPRE) scheme that not only captures the property of IBPRE (i.e. identity-based re-encryption), but also supports conditional re-encryption. Moreover, the scheme can be proved secure against adaptive condition and adaptive identity chosen-ciphertext attacks in the standard model.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Computing Science
Date : November 2012
Identification Number : 10.1007/978-3-642-37682-5_17
Copyright Disclaimer : © Springer-Verlag Berlin Heidelberg 2013
Uncontrolled Keywords : Unidirectional Conditional Proxy Re-encryption Identity-Based Encryption Single Hop Standard Model
Additional Information : Part of the Lecture Notes in Computer Science book series (LNCS, volume 7839)
Depositing User : Karen Garland
Date Deposited : 22 Nov 2017 13:38
Last Modified : 22 Nov 2017 13:38
URI: http://epubs.surrey.ac.uk/id/eprint/844923

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