1. The knowledge complexity of interactive proof-systems (extended abstract);Goldwasser,1985
2. Non-interactive zero-knowledge and its applications (extended abstract);Blum,1988
3. Randomizable proofs and delegatable anonymous credentials;Belenkiy,2009
4. Composable and modular anonymous credentials: definitions and practical constructions;Camenisch,2015
5. Formal treatment of privacy-enhancing credential systems;Camenisch,2015