Ibraimi, L. and Petkovic, M. and Nikova, S.I. and Hartel, P.H. and Jonker, W.
Mediated Ciphertext-Policy Attribute-Based Encryption and its Application (extended version).
Technical Report TR-CTIT-09-12,
Centre for Telematics and Information Technology University of Twente, Enschede.
Full text available as:
In Ciphertext-Policy Attribute-Based Encryption (CP-ABE),
a user secret key is associated with a set of attributes, and the ciphertext
is associated with an access policy over attributes. The user can decrypt
the ciphertext if and only if the attribute set of his secret key satisfies
the access policy specified in the ciphertext. Several CP-ABE schemes
have been proposed, however, some practical problems, such as attribute
revocation, still needs to be addressed. In this paper, we propose a mediated
Ciphertext-Policy Attribute-Based Encryption (mCP-ABE) which
extends CP-ABE with instantaneous attribute revocation. Furthermore,
we demonstrate how to apply the proposed mCP-ABE scheme to securely
manage Personal Health Records (PHRs).
|Item Type:||Internal Report (Technical Report)|
|Research Group:||EWI-DIES: Distributed and Embedded Security, EWI-DB: Databases|
|Research Program:||CTIT-ISTRICE: Integrated Security and Privacy in a Networked World|
|Research Project:||SPCMHD: Secure Patient-Centric Management of Health Data|
|Deposited On:||27 April 2009|
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