Collusion-Resistant Domain-Specific Pseudonymous Signatures
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- Bringer J., Chabanne H., Patey A. (2013) Collusion-Resistant Domain-Specific Pseudonymous Signatures. In: Lopez J., Huang X., Sandhu R. (eds) Network and System Security. NSS 2013. Lecture Notes in Computer Science, vol 7873. Springer, Berlin, Heidelberg
At ISC 2012, Bender et al.introduced the notion of domain-specific pseudonymous signatures for ID documents. With this primitive, a user can sign with domain-specific pseudonyms, that cannot be linked across domains but that are linkable in a given domain. However, their security model assumes non-collusion of malicious users, which is a strong assumption. We therefore propose improvements to their construction. Our main contribution is a new pseudonymous signature scheme based on group signatures that is collusion-resistant.
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