Ibraimi, L. and Tang, Qiang and Hartel, P.H. and Jonker, W.
A Type-and-Identity-based Proxy Re-Encryption Scheme and its Application in Healthcare.
Technical Report TR-CTIT-08-31,
Centre for Telematics and Information Technology University of Twente, Enschede.
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Proxy re-encryption is a cryptographic primitive developed to
delegate the decryption right from one party (the delegator) to
another (the delegatee). In a proxy re-encryption scheme, the
delegator assigns a key to a proxy to re-encrypt all messages
encrypted with his public key such that the re-encrypted ciphertexts
can be decrypted with the delegatee's private key. We propose a
type-and-identity-based proxy re-encryption scheme based on the
Boneh-Franklin Identity Based Encryption (IBE) scheme. In our
scheme, the delegator can categorize messages into different types
and delegate the decryption right of each type to the delegatee
through a proxy. Our scheme enables the delegator to provide the
proxy fine-grained re-encryption capability. As an application, we
propose a fine-grained Personal Health Record (PHR) disclosure
scheme for healthcare service by applying the proposed scheme.
|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:||15 April 2008|
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