Privacy preserving of trust management credentials based on trusted computing

Authors:
Bin Wu;Dengguo Feng;Meijiao Duan
Affiliations:
State Key Laboratory of Information Security, Graduate University of Chinese Academy of Sciences, Beijing, China;State Key Laboratory of Information Security, Graduate University of Chinese Academy of Sciences, Beijing, China;State Key Laboratory of Information Security, Graduate University of Chinese Academy of Sciences, Beijing, China
Venue:
ISPEC'10 Proceedings of the 6th international conference on Information Security Practice and Experience
Year:
2010

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Abstract

Privacy disclosure of forward direction credentials and backward direction credentials is an important security defect in existing trust management systems. In this paper, a novel distributed privacy preserving scheme for trust management credentials is proposed to solve this problem. Based on the trusted computing technology, the scheme provides the sealed protection for the credentials with privacy sensitive information and guarantees all the Deduced Composite Credential Constructing Units running in participant platforms untampered. In the process of collecting credentials, the deduced composite of multiple credentials replaces the single credential as the irreducible constituent to prevent the uncontrolled disclosure of privacy attributes. By modifying the traditional privacy preserving pattern, our scheme avoids the inadvertent disclosure of credential privacy attributes and provides a reliable solution for many privacy sensitive fields such as medical, business, and so on.