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AG Codes and Kryptographie Show image information

AG Codes and Kryptographie

Nils Löken


Digitale Zukunft

Member - Research Student

Codes and Cryptography


+49 5251 60-6626
+49 5251 60-6618
Fürstenallee 11
33102 Paderborn
Postal Address:
Warburger Str. 100
33098 Paderborn


Open list in Research Information System


Attribute-Based Encryption as a Service for Access Control in Large-Scale Organizations

J. Blömer, P. Günther, V. Krummel, N. Löken, in: Foundations and Practice of Security, Springer International Publishing, 2018, pp. 3-17



Searchable Encryption with Access Control

N. Löken, in: Proceedings of the 12th International Conference on Availability, Reliability and Security - ARES '17, ACM Press, 2017



Short Group Signatures with Distributed Traceability

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


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.

A Group Signature Scheme with Distributed Group Management - An Application of Threshold Encryption

N. Löken. A Group Signature Scheme with Distributed Group Management - An Application of Threshold Encryption. 2015.


Open list in Research Information System

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