Fully-Featured Anonymous Credentials with Reputation System
| Autor: | Fabian Eidens, Laurens Porzenheim, Jan Haltermann, Jakob Juhnke, Lukas Eilers, Kai Bemmann, Denis Diemert, Michael Schlichtig, Burhan Otour, Simon Pukrop, Erik Schilling, Marcel Stienemeier, Jan Bobolz, Henrik Bröcher, Johannes Blömer |
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| Rok vydání: | 2018 |
| Předmět: |
Service (business)
Authentication Revocation business.industry Computer science media_common.quotation_subject Internet privacy Access control 02 engineering and technology Security token Credential Reputation system 020204 information systems 0202 electrical engineering electronic engineering information engineering ComputingMilieux_COMPUTERSANDSOCIETY 020201 artificial intelligence & image processing business Reputation media_common |
| Zdroj: | ARES |
| DOI: | 10.1145/3230833.3234517 |
| Popis: | We present CLARC (Cryptographic Library for Anonymous Reputation and Credentials), an anonymous credentials system (ACS) combined with an anonymous reputation system. Using 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. Furthermore, 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. To evaluate feasibility of our construction, we present an open-source prototype implementation. |
| Databáze: | OpenAIRE |
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