Скачать или смотреть CERIAS Security: Privacy Policy-driven Access Control with Mixed Credentials 2/5

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Speaker: Shouhuai Xu · University of Texas at San Antonio

Access control in decentralized systems is an important problem that has not been fully understood, except perhaps that it should be based on credentials. There are mainly two research approaches towards this goal: one is to pursue powerful individual credentials yet without necessarily considering flexible access control policies, the other is to consider flexible policies yet without necessarily accommodating the useful credential schemes that have become available.

This paper proposes a unified approach that simultaneously consider flexible policies and useful credentials. A first realization of this approach is the notion of assembly signatures (and identifications), which are: (1) privacy-preserving, meaning that the access requestor's privacy is ensured; (2) policy-driven, meaning that the validity of a signature is with respect to a given access control policy; (3) ``mixed credentials"-based, meaning that a signature is constructed out of various anonymous and non-anonymous credentials. (This is a joint work with Moti Yung)

For more information go to the Cerias website (http://bit.ly/dsFCBF)