[{"status":"public","has_accepted_license":"1","date_created":"2018-06-14T11:19:29Z","file":[{"file_size":920843,"creator":"feidens","file_id":"5428","date_updated":"2018-11-08T10:17:39Z","content_type":"application/pdf","relation":"main_file","date_created":"2018-11-08T10:17:39Z","file_name":"react_acs.pdf","access_level":"closed"}],"author":[{"last_name":"Bemmann","first_name":"Kai","full_name":"Bemmann, Kai"},{"last_name":"Blömer","id":"23","first_name":"Johannes","full_name":"Blömer, Johannes"},{"id":"27207","last_name":"Bobolz","full_name":"Bobolz, Jan","first_name":"Jan"},{"full_name":"Bröcher, Henrik","first_name":"Henrik","id":"41047","last_name":"Bröcher"},{"first_name":"Denis Pascal","full_name":"Diemert, Denis Pascal","last_name":"Diemert","id":"44071"},{"last_name":"Eidens","id":"25078","first_name":"Fabian","full_name":"Eidens, Fabian"},{"last_name":"Eilers","full_name":"Eilers, Lukas","first_name":"Lukas"},{"last_name":"Haltermann","id":"44413","first_name":"Jan Frederik","full_name":"Haltermann, Jan Frederik"},{"id":"48090","last_name":"Juhnke","full_name":"Juhnke, Jakob","first_name":"Jakob"},{"first_name":"Burhan","full_name":"Otour, Burhan","last_name":"Otour"},{"id":"47434","last_name":"Porzenheim","full_name":"Porzenheim, Laurens Alexander","first_name":"Laurens Alexander"},{"last_name":"Pukrop","first_name":"Simon","full_name":"Pukrop, Simon"},{"first_name":"Erik","full_name":"Schilling, Erik","last_name":"Schilling"},{"first_name":"Michael","full_name":"Schlichtig, Michael","last_name":"Schlichtig","id":"32312"},{"full_name":"Stienemeier, Marcel","first_name":"Marcel","last_name":"Stienemeier"}],"quality_controlled":"1","publisher":"ACM","publication":"Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES '18","file_date_updated":"2018-11-08T10:17:39Z","user_id":"25078","ddc":["000"],"abstract":[{"lang":"eng","text":"We present CLARC (Cryptographic Library for Anonymous Reputation and Credentials), an anonymous credentials system (ACS) combined with an anonymous reputation system.\r\n\r\nUsing CLARC, users can receive attribute-based credentials from issuers. They can efficiently prove that their credentials satisfy complex (access) policies in a privacy-preserving way. This implements anonymous access control with complex policies.\r\n\r\nFurthermore, CLARC is the first ACS that is combined with an anonymous reputation system where users can anonymously rate services. A user who gets access to a service via a credential, also anonymously receives a review token to rate the service. If a user creates more than a single rating, this can be detected by anyone, preventing users from spamming ratings to sway public opinion.\r\n\r\nTo evaluate feasibility of our construction, we present an open-source prototype implementation."}],"citation":{"ieee":"K. Bemmann et al., “Fully-Featured Anonymous Credentials with Reputation System,” in Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18, Hamburg, Germany.","short":"K. Bemmann, J. Blömer, J. Bobolz, H. Bröcher, D.P. Diemert, F. Eidens, L. Eilers, J.F. Haltermann, J. Juhnke, B. Otour, L.A. Porzenheim, S. Pukrop, E. Schilling, M. Schlichtig, M. Stienemeier, in: Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18, ACM, New York, NY, USA, n.d.","bibtex":"@inproceedings{Bemmann_Blömer_Bobolz_Bröcher_Diemert_Eidens_Eilers_Haltermann_Juhnke_Otour_et al., place={New York, NY, USA}, title={Fully-Featured Anonymous Credentials with Reputation System}, DOI={10.1145/3230833.3234517}, booktitle={Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18}, publisher={ACM}, author={Bemmann, Kai and Blömer, Johannes and Bobolz, Jan and Bröcher, Henrik and Diemert, Denis Pascal and Eidens, Fabian and Eilers, Lukas and Haltermann, Jan Frederik and Juhnke, Jakob and Otour, Burhan and et al.} }","mla":"Bemmann, Kai, et al. “Fully-Featured Anonymous Credentials with Reputation System.” Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18, ACM, doi:10.1145/3230833.3234517.","apa":"Bemmann, K., Blömer, J., Bobolz, J., Bröcher, H., Diemert, D. P., Eidens, F., … Stienemeier, M. (n.d.). Fully-Featured Anonymous Credentials with Reputation System. In Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18. New York, NY, USA: ACM. https://doi.org/10.1145/3230833.3234517","ama":"Bemmann K, Blömer J, Bobolz J, et al. Fully-Featured Anonymous Credentials with Reputation System. In: Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18. New York, NY, USA: ACM. doi:10.1145/3230833.3234517","chicago":"Bemmann, Kai, Johannes Blömer, Jan Bobolz, Henrik Bröcher, Denis Pascal Diemert, Fabian Eidens, Lukas Eilers, et al. “Fully-Featured Anonymous Credentials with Reputation System.” In Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18. New York, NY, USA: ACM, n.d. https://doi.org/10.1145/3230833.3234517."},"type":"conference","year":"2018","main_file_link":[{"url":"https://eprint.iacr.org/2018/835","open_access":"1"}],"_id":"3265","conference":{"location":"Hamburg, Germany","name":"ARES 2018 - SECPID","start_date":"2018-08-27","end_date":"2018-08-30"},"project":[{"name":"SFB 901","_id":"1"},{"name":"SFB 901 - Project Area C","_id":"4"},{"name":"SFB 901 - Subproject C1","_id":"13"},{"name":"KogniHome - die mitdenkende Wohnung","_id":"44"}],"publication_status":"accepted","publication_identifier":{"isbn":["978-1-4503-6448-5"]},"department":[{"_id":"64"}],"related_material":{"link":[{"relation":"software","url":"https://github.com/upbcuk"}]},"title":"Fully-Featured Anonymous Credentials with Reputation System","place":"New York, NY, USA","language":[{"iso":"eng"}],"oa":"1","doi":"10.1145/3230833.3234517","date_updated":"2022-01-06T06:59:07Z"},{"related_material":{"record":[{"relation":"other","status":"public","id":"325"}]},"title":"Short Group Signatures with Distributed Traceability","project":[{"_id":"1","name":"SFB 901"},{"name":"SFB 901 - Subprojekt C1","_id":"13"},{"name":"SFB 901 - Project Area C","_id":"4"},{"name":"KogniHome - die mitdenkende Wohnung","_id":"44"}],"department":[{"_id":"64"}],"doi":"10.1007/978-3-319-32859-1_14","date_updated":"2022-01-06T06:59:07Z","language":[{"iso":"eng"}],"series_title":"LNCS","user_id":"13703","ddc":["000"],"abstract":[{"text":"Group signatures, introduced by Chaum and van Heyst [15], are an important primitive in cryptography. In group signature schemes every group member can anonymously sign messages on behalf of the group. In case of disputes a dedicated opening manager is able to trace signatures - he can extract the identity of the producer of a given signature. A formal model for static group signatures schemes and their security is defined by Bellare, Micciancio, and Warinschi [4], the case of dynamic groups is considered by Bellare, Shi, and Zhang [5]. Both models define group signature schemes with a single opening manager. The main difference between these models is that the number of group members in static schemes is fixed, while in dynamic schemes group members can join the group over time.","lang":"eng"}],"date_created":"2017-10-17T12:41:41Z","status":"public","has_accepted_license":"1","file":[{"content_type":"application/pdf","date_updated":"2018-11-02T14:08:23Z","relation":"main_file","success":1,"file_size":262436,"creator":"ups","file_id":"5262","access_level":"closed","file_name":"ShortGroupSignaturesWithDistri.pdf","date_created":"2018-11-02T14:08:23Z"}],"file_date_updated":"2018-11-02T14:08:23Z","publication":"Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS)","author":[{"full_name":"Blömer, Johannes","first_name":"Johannes","id":"23","last_name":"Blömer"},{"full_name":"Juhnke, Jakob","first_name":"Jakob","id":"48090","last_name":"Juhnke"},{"last_name":"Löken","id":"13703","first_name":"Nils","full_name":"Löken, Nils"}],"_id":"253","page":"166-180","year":"2015","type":"conference","citation":{"bibtex":"@inproceedings{Blömer_Juhnke_Löken_2015, series={LNCS}, title={Short Group Signatures with Distributed Traceability}, DOI={10.1007/978-3-319-32859-1_14}, booktitle={Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS)}, author={Blömer, Johannes and Juhnke, Jakob and Löken, Nils}, year={2015}, pages={166–180}, collection={LNCS} }","mla":"Blömer, Johannes, et al. “Short Group Signatures with Distributed Traceability.” Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS), 2015, pp. 166–80, doi:10.1007/978-3-319-32859-1_14.","chicago":"Blömer, Johannes, Jakob Juhnke, and Nils Löken. “Short Group Signatures with Distributed Traceability.” In Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS), 166–80. LNCS, 2015. https://doi.org/10.1007/978-3-319-32859-1_14.","ama":"Blömer J, Juhnke J, Löken N. Short Group Signatures with Distributed Traceability. In: Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS). LNCS. ; 2015:166-180. doi:10.1007/978-3-319-32859-1_14","apa":"Blömer, J., Juhnke, J., & Löken, N. (2015). Short Group Signatures with Distributed Traceability. In Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS) (pp. 166–180). https://doi.org/10.1007/978-3-319-32859-1_14","ieee":"J. Blömer, J. Juhnke, and N. Löken, “Short Group Signatures with Distributed Traceability,” in Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS), 2015, pp. 166–180.","short":"J. Blömer, J. Juhnke, N. Löken, in: Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS), 2015, pp. 166–180."}}]