Attribute-based encryption without key cloning
type: Item
instance of: scholarly article
title: Attribute-based encryption without key cloning
zbMATH Open document ID: 1276.94014
DOI: 10.1504/IJACT.2012.045587
author: M. Jason Hinek
author: Shaoquan Jiang
author: Reihaneh Safavi-Naini
author: Siamak F. Shahandashti
published in: International Journal of Applied Cryptography
publication date: 2012-11-16T00:00:00Z
review text: Summary: In this work, we consider the problem of key cloning in attribute-based encryption schemes. We introduce a new type of attribute-based encryption scheme, called token-based attribute-based encryption (tk-ABE) that provides strong deterrence for key cloning, in the sense that delegation of keys reveals some personal information about the user. It also has the feature that a misbehaving user can be easily revoked. We formalise the security requirements for such a scheme in terms of indistinguishability of the ciphertexts and two new security requirements which we call uncloneability and privacy-preserving. We construct a privacy-preserving uncloneable token-based attribute-based encryption scheme based on Cheung and Newport's ciphertext-policy attribute-based encryption scheme and prove the scheme satisfies the above three security requirements. We also introduce the notion of non-interactive uncloneable attribute-based encryption in order to remove the online token server in the tk-ABE. We then construct such a new scheme with provable security. It should be pointed out that, although our non-interactive scheme is token-free, the scheme does not have the capability to easily revoke users from the scheme. Hence, both types of schemes have their own merits of existence.
Mathematics Subject Classification ID: 94A60
zbMATH DE Number: 6108314
zbMATH Keywords: attribute-based encryption
zbMATH Keywords: ABE
zbMATH Keywords: access control
zbMATH Keywords: key delegation
zbMATH Keywords: user revocation
MaRDI profile type: Publication
Wikidata QID: Q121735046
description: scientific article; zbMATH DE number 6108314