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AG Codes and Kryptographie Show image information

AG Codes and Kryptographie

Fabian Eidens

Contact
 Fabian Eidens

Codes and Cryptography

Research Assistant

PACE - Paderborn Center for Advanced Studies

Committee - Research Student

Phone:
+49 5251 60-6650
Fax:
+49 5251 60-6618
Office:
F2.108
Web:
Visitor:
Fürstenallee 11
33102 Paderborn
Postal Address:
Warburger Str. 100
33098 Paderborn

Publications


Open list in Research Information System

2018

Enhanced Security of Attribute-Based Signatures

J. Blömer, F. Eidens, J. Juhnke, in: The International Conference on Cryptology And Network Security (CANS), Springer, 2018, pp. 235-255


Fully-Featured Anonymous Credentials with Reputation System

K. Bemmann, J. Blömer, J. Bobolz, H. Bröcher, D. Diemert, F. Eidens, L. Eilers, J. Haltermann, J. Juhnke, B. Otour, L. Porzenheim, S. Pukrop, E. Schilling, M. Schlichtig, M. Stienemeier, in: Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES '18, ACM, 2018

DOI Download
Abstract

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.


Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems

J. Blömer, F. Eidens, J. Juhnke, in: Topics in Cryptology - {CT-RSA} 2018 - The Cryptographers' Track at the {RSA} Conference 2018, Proceedings, Springer International Publishing, 2018, pp. 470-490


2015

Anonymous credential system based on q-Strong Diffie-Hellman Assumption

F. Eidens. Anonymous credential system based on q-Strong Diffie-Hellman Assumption. 2015.


2012

Adaptive Verbindungsstrategien in dynamischen Suchnetzwerken

F. Eidens, Universität Paderborn, 2012


Open list in Research Information System

The University for the Information Society