P. Hemsen, M. Hesse, N. Löken, and Z. Nouri, “Platform-independent Reputation and Qualification System for Crowdwork,” in 2nd Crowdworking Symposium, Paderborn, 2020.

N. Löken, Cryptography for the Crowd — A Study of Cryptographic Schemes with Applications to Crowd Work. 2020.

J. Blömer and N. Löken, “Personal Cross-Platform Reputation,” in Security and Trust Management, STM 2019, 2019, vol. 11738.

J. Blömer and N. Löken, “Dynamic Searchable Encryption with Access Control,” in 12th International Symposium on Foundations and Practice of Security, FPS 2019, 2019, vol. 12056.

J. Blömer and N. Löken, “Cloud Architectures for Searchable Encryption,” in Proceedings of the 13th International Conference on Availability, Reliability and Security, ARES 2018, Hamburg, Germany, pp. 25:1--25:10.

N. Löken, “Searchable Encryption with Access Control,” in Proceedings of the 12th International Conference on Availability, Reliability and Security  - ARES ’17, 2017.

J. Blömer, P. Günther, V. Krummel, and N. Löken, “Attribute-Based Encryption as a Service for Access Control in Large-Scale Organizations,” in Foundations and Practice of Security, 2017, pp. 3–17.

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.

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

N. Löken, Identitätsbasierte Signaturen - Ein Sicherheitsbeweis für Signaturen auf Grundlage von Gap-Diffie-Hellman-Gruppen mit Hilfe des Forking-Lemmas. Universität Paderborn, 2012.