Rethinking Public Key Infrastructures and Digital Certificates: Building in Privacy
Rethinking Public Key Infrastructures and Digital Certificates: Building in Privacy
Handbook of Applied Cryptography
Handbook of Applied Cryptography
Dynamic Accumulators and Application to Efficient Revocation of Anonymous Credentials
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
Efficient Group Signature Schemes for Large Groups (Extended Abstract)
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
Proofs of Knowledge for Non-monotone Discrete-Log Formulae and Applications
ISC '02 Proceedings of the 5th International Conference on Information Security
On monotone formula closure of SZK
SFCS '94 Proceedings of the 35th Annual Symposium on Foundations of Computer Science
Proving in zero-knowledge that a number is the product of two safe primes
EUROCRYPT'99 Proceedings of the 17th international conference on Theory and application of cryptographic techniques
Access with Fast Batch Verifiable Anonymous Credentials
ICICS '08 Proceedings of the 10th International Conference on Information and Communications Security
Efficient user revocation for privacy-aware PKI
Proceedings of the 5th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness
A pervasive P3P-based negotiation mechanism for privacy-aware pervasive e-commerce
Decision Support Systems
Security analysis and fix of an anonymous credential system
ACISP'05 Proceedings of the 10th Australasian conference on Information Security and Privacy
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In this paper we present a non-transferable anonymous credential system that is based on the concept of a chameleon certificate. A chameleon certificate is a special certificate that enjoys two interesting properties. Firstly, the owner can choose which attributes of the certificate to disclose. Moreover, a chameleon certificate is multi-show in the sense that several uses of the same chameleon certificate by the same user cannot be linked together. We adopt the framework of Brands [2] and our construction improves the results of Camenisch et al. [5] and Verheul [16] since it allows the owner of a certificate to prove general statements on the attributes encoded in the certificate and our certificates enjoy the multi-show property.