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A Ciphertext-Policy Attribute-Based Proxy Re-encryption with Chosen-Ciphertext Security

Liang, Kaitai, Fang, Liming, Susilo, Willy and Wong, Duncan S. (2013) A Ciphertext-Policy Attribute-Based Proxy Re-encryption with Chosen-Ciphertext Security In: 5th International Conference on Intelligent Networking and Collaborative Systems (INCoS), 2013, 9-11 Sept. 2013, Xi'an, China.

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Cipher text-Policy Attribute-Based Proxy Re-Encryption (CP-ABPRE) extends the traditional Proxy Re-Encryption (PRE) by allowing a semi-trusted proxy to transform a cipher text under an access policy to the one with the same plaintext under another access policy (i.e. attribute-based re-encryption). The proxy, however, learns nothing about the underlying plaintext. CP-ABPRE has many real world applications, such as fine-grained access control in cloud storage systems and medical records sharing among different hospitals. Previous CP-ABPRE schemes leave how to be secure against Chosen-Cipher text Attacks (CCA) as an open problem. This paper, for the first time, proposes a new CP-ABPRE to tackle the problem. The new scheme supports attribute-based re-encryption with any monotonic access structures. Despite our scheme is constructed in the random oracle model, it can be proved CCA secure under the decisional q-parallel bilinear Diffie-Hellman exponent assumption.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Computer Science
Authors :
Fang, Liming
Susilo, Willy
Wong, Duncan S.
Date : 15 October 2013
DOI : 10.1109/INCoS.2013.103
Copyright Disclaimer : © 2013 IEEE
Uncontrolled Keywords : Chosen-Ciphertext Security, Proxy Re-Encryption, Ciphertext-Policy Attribute-Based Proxy Re-Encryption
Depositing User : Karen Garland
Date Deposited : 22 Nov 2017 13:39
Last Modified : 06 Jul 2019 05:24

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