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Fully Private Revocable Predicate Encryption

Nieto, JMG, Manulis, M and Sun, D (2012) Fully Private Revocable Predicate Encryption In: 17th Australasian Conference, ACISP 2012, 2012-07-09 - 2012-07-11, Wollongong, NSW, Australia.

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Abstract

We introduce the concept of Revocable Predicate Encryption (RPE), which extends current predicate encryption setting with revocation support: private keys can be used to decrypt an RPE ciphertext only if they match the decryption policy (defined via attributes encoded into the ciphertext and predicates associated with private keys) and were not revoked by the time the ciphertext was created. We formalize the notion of attribute hiding in the presence of revocation and propose an RPE scheme, called AH-RPE, which achieves attribute-hiding under the Decision Linear assumption in the standard model. We then present a stronger privacy notion, termed full hiding, which further cares about privacy of revoked users. We propose another RPE scheme, called FH-RPE, that adopts the Subset Cover Framework and offers full hiding under the Decision Linear assumption in the standard model. The scheme offers very flexible privacy-preserving access control to encrypted data and can be used in sender-local revocation scenarios.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Computing Science
Authors :
AuthorsEmailORCID
Nieto, JMGUNSPECIFIEDUNSPECIFIED
Manulis, MUNSPECIFIEDUNSPECIFIED
Sun, DUNSPECIFIEDUNSPECIFIED
Date : 2012
Identification Number : 10.1007/978-3-642-31448-3_26
Contributors :
ContributionNameEmailORCID
PublisherSpringer, UNSPECIFIEDUNSPECIFIED
Additional Information : Copyright Springer-Verlag Berlin Heidelberg 2012. The original publication is available at http://www.springerlink.com
Depositing User : Symplectic Elements
Date Deposited : 16 Oct 2013 16:53
Last Modified : 09 Jun 2014 13:37
URI: http://epubs.surrey.ac.uk/id/eprint/804090

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