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Conditional Privacy using Re-encryption

Suriadi, Suriadi, Foo, Ernest, & Smith, Jason (2008) Conditional Privacy using Re-encryption. Information Security Institute.

Abstract

This paper proposes, for the first time, the use of re-encryption scheme to improve users privacy in a privacy-enhancing system. Firstly, a secure protocol to distribute a re-encryption key from a user A to a service provider B, with the help of n referees, is proposed. Next, this re-encryption key distribution protocol is combined with an existing private credential system to provide a protocol for conditional revocation of private information. This protocol has a strong accountability property with efficient online performance. It does not assume the existence of a single trusted entity. We tolerate up to t dishonest referees (t ≤ n − 1), while A and B are dishonest and do not trust each other.

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130 since deposited on 16 Jul 2008
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ID Code: 14076
Item Type: Report
Additional Information: This paper is to appear at IFIP Network and System Security Workshop, 18-19 October 2008, Shanghai, China.
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > OTHER INFORMATION AND COMPUTING SCIENCES (089900)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Institutes > Information Security Institute
Copyright Owner: Copyright 2008 (The authors)
Deposited On: 16 Jul 2008
Last Modified: 09 Jun 2010 23:01

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