Using Strand Space Model to Verify the Privacy Properties of a Fair Anonymous Authentication Scheme

Abstract

The strand space model has been proposed as a formal method for verifying the security goals of cryptographic protocols. Many cryptographic protocols aim not only to provide security, but also privacy properties of the communication such as anonymity. In this paper, we apply the strand space model in order to verify the security and privacy goals of a recently proposed anonymous authentication scheme. We show that the strand space model can be used to formalize privacy properties such as transaction untraceability and unlink ability, user non-frame ability and anonymous credential non-transferability.