Anonymity analysis in credentials-based systems: A formal framework

doi:10.1016/j.csi.2007.10.004

Anonymity analysis in credentials-based systems: A formal framework

2008-05-01

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DOI：10.1016/j.csi.2007.10.004

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Anonymity has been formalized and some metrics have been defined in the scope of anonymizing communication channels. In this paper, such formalization has been extended to cope with anonymity in those scenarios where users must anonymously prove that they own certain privileges to perforin remote transactions. In these types of scenarios, the authorization policy states the privileges required to perform a given remote transaction. The paper presents a framework to analyze the actual degree of anonymity reached in a given transaction and allows its comparison with an ideal anonymity degree as defined by the authorization policy, providing a tool to model, design and analyze anonymous systems in different scenarios. (C) 2007 Elsevier B.V. All rights reserved.

Keyword:

anonymity metrics

anonymity degree

adequacy degree

anonymous credential systems

Anonymity analysis in credentials-based systems: A formal framework

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