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109 Publications


2023 | Conference Paper | LibreCat-ID: 44855
Hemmrich, S., Bobolz, J., Beverungen, D., & Blömer, J. (2023). Designing Business Reputation Ecosystems — A Method for Issuing and Trading Monetary Ratings on a Blockchain. ECIS 2023 Research Papers. ECIS 2023.
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2023 | Conference Paper | LibreCat-ID: 35014 | OA
Blömer, J., Bobolz, J., & Bröcher, H. (2023). On the impossibility of surviving (iterated) deletion of weakly dominated strategies in rational MPC. TCC 2023, Taipeh, Taiwan.
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2023 | Conference Paper | LibreCat-ID: 43458 | OA
Blömer, J., Bobolz, J., & Porzenheim, L. A. (2023). A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices. Asiacrypt 2023, Guangzhou, China.
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2022 | Dissertation | LibreCat-ID: 35188
Eidens, F. (2022). Privacy-Preserving Cryptography: Attribute-Based Signatures and Updatable Credentials. https://doi.org/10.17619/UNIPB/1-1653
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2021 | Preprint | LibreCat-ID: 26645 | OA
Bobolz, J., Eidens, F., Heitjohann, R., & Fell, J. (2021). Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes. IACR eprint.
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2021 | Conference Paper | LibreCat-ID: 29566
Bobolz, J., Eidens, F., Krenn, S., Ramacher, S., & Samelin, K. (2021). Issuer-Hiding Attribute-Based Credentials. Cryptology and Network Security. https://doi.org/10.1007/978-3-030-92548-2_9
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2020 | Journal Article | LibreCat-ID: 20888
Blömer, J., Brauer, S., & Bujna, K. (2020). A Complexity Theoretical Study of Fuzzy K-Means. ACM Transactions on Algorithms, 16(4), 1–25. https://doi.org/10.1145/3409385
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2020 | Conference Paper | LibreCat-ID: 16487 | OA
Bobolz, J., Eidens, F., Krenn, S., Slamanig, D., & Striecks, C. (2020). Privacy-Preserving Incentive Systems with Highly Efficient Point-Collection. In Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20),. New York, NY, USA: ACM. https://doi.org/10.1145/3320269.3384769
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2020 | Journal Article | LibreCat-ID: 10790
Blömer, J., Brauer, S., Bujna, K., & Kuntze, D. (2020). How well do SEM algorithms imitate EM algorithms? A non-asymptotic analysis for mixture models. Advances in Data Analysis and Classification, 14, 147–173. https://doi.org/10.1007/s11634-019-00366-7
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2020 | Dissertation | LibreCat-ID: 15482
Löken, N. (2020). Cryptography for the Crowd — A Study of Cryptographic Schemes with Applications to Crowd Work. https://doi.org/10.17619/UNIPB/1-854
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2019 | Journal Article | LibreCat-ID: 2916
Brauer, S. (2019). Complexity of single-swap heuristics for metric facility location and related problems. Theoretical Computer Science, 754, 88–106. https://doi.org/10.1016/j.tcs.2018.04.048
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2019 | Conference Paper | LibreCat-ID: 13554 | OA
Blömer, J., & Löken, N. (2019). Personal Cross-Platform Reputation. In Security and Trust Management, STM 2019 (Vol. 11738). https://doi.org/10.1007/978-3-030-31511-5_9
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2019 | Conference Paper | LibreCat-ID: 13557 | OA
Blömer, J., & Löken, N. (2019). Dynamic Searchable Encryption with Access Control. In 12th International Symposium on Foundations and Practice of Security, FPS 2019 (Vol. 12056). Springer.
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2019 | Dissertation | LibreCat-ID: 13679
Brauer, S. (2019). Classification and Approximation of Geometric Location Problems. Paderborn. https://doi.org/10.17619/UNIPB/1-816
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2019 | Conference Paper | LibreCat-ID: 13904 | OA
Blömer, J., Bobolz, J., Diemert, D. P., & Eidens, F. (2019). Updatable Anonymous Credentials and Applications to Incentive Systems. Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19. 26th ACM Conference on Computer and Communications Security, London. https://doi.org/10.1145/3319535.3354223
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2018 | Conference Paper | LibreCat-ID: 2862 | OA
Blömer, J., Eidens, F., & Juhnke, J. (2018). Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems. In Topics in Cryptology - {CT-RSA} 2018 - The Cryptographers’ Track at the {RSA} Conference 2018, Proceedings (pp. 470–490). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-319-76953-0_25
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2018 | Journal Article | LibreCat-ID: 2685
Blömer, J., & Kohn, K. (2018). Voronoi Cells of Lattices with Respect to Arbitrary Norms. SIAM Journal on Applied Algebra and Geometry., 2(2), 314–338. https://doi.org/10.1137/17M1132045
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2018 | Conference Paper | LibreCat-ID: 3265 | OA
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
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2018 | Conference Paper | LibreCat-ID: 2965
Blömer, J., & Löken, N. (n.d.). Cloud Architectures for Searchable Encryption. In Proceedings of the 13th International Conference on Availability, Reliability and Security, ARES 2018 (pp. 25:1--25:10). New York, NY, USA: ACM. https://doi.org/10.1145/3230833.3230853
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2018 | Working Paper | LibreCat-ID: 5820
Blömer, J., Bobolz, J., Scheideler, C., & Setzer, A. (n.d.). Provably Anonymous Communication Based on Trusted Execution Environments.
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2018 | Conference Paper | LibreCat-ID: 4344
Blömer, J., Brauer, S., & Bujna, K. (2018). Coresets for Fuzzy K-Means with Applications. In 29th International Symposium on Algorithms and Computation  (ISAAC 2018) (pp. 46:1--46:12). Jiaoxi, Yilan County, Taiwan: Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik. https://doi.org/10.4230/LIPIcs.ISAAC.2018.46
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2018 | Dissertation | LibreCat-ID: 6597
Juhnke, J. (2018). Models and Constructions for Secure Reputation Systems. Universität Paderborn. https://doi.org/10.17619/UNIPB/1-570
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2018 | Conference Paper | LibreCat-ID: 3873 | OA
Blömer, J., Eidens, F., & Juhnke, J. (2018). Enhanced Security of Attribute-Based Signatures. The International Conference on Cryptology And Network Security (CANS), 11124, 235–255. https://doi.org/10.1007/978-3-030-00434-7_12
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2018 | Conference Paper | LibreCat-ID: 2379 | OA
Blömer, J., & Bobolz, J. (n.d.). Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures. ACNS 2018 Applied Cryptography & Network Security. The 16th International Conference on Applied Cryptography and Network Security, Leuven, Belgium. https://doi.org/10.1007/978-3-319-93387-0_12
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2017 | Dissertation | LibreCat-ID: 2908
Bujna, K. (2017). Soft Clustering Algorithms - Theoretical and Practical Improvements. Universität Paderborn. https://doi.org/10.17619/UNIPB/1-226
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2017 | Conference Paper | LibreCat-ID: 2967 | OA
Blömer, J., & Liske, G. (2017). Subtleties in Security Definitions for Predicate Encryption with Public Index. In Proceedings of the International Conference of Mathematical Aspects of Computer and Information Sciences (MACIS) (Vol. 10693, pp. 438–453). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-319-72453-9_35
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2017 | Dissertation | LibreCat-ID: 116
Liske, G. (2017). CCA-Security for Predicate Encryption Schemes. Universität Paderborn. https://doi.org/10.17619/UNIPB/1-220
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2017 | Conference Paper | LibreCat-ID: 2343 | OA
Löken, N. (2017). Searchable Encryption with Access Control. In Proceedings of the 12th International Conference on Availability, Reliability and Security  - ARES ’17. ACM Press. https://doi.org/10.1145/3098954.3098987
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2017 | Conference Paper | LibreCat-ID: 2344 | OA
Blömer, J., Günther, P., Krummel, V., & Löken, N. (2017). Attribute-Based Encryption as a Service for Access Control in Large-Scale Organizations. In Foundations and Practice of Security (pp. 3–17). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-319-75650-9_1
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2017 | Book Chapter | LibreCat-ID: 2381
Brauer, S. (2017). Complexity of Single-Swap Heuristics for Metric Facility Location and Related Problems. In D. Fotakis, A. Pagourtzis, & V. T. Paschos (Eds.), Lecture Notes in Computer Science (Vol. 10236, pp. 116–127). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-319-57586-5_11
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2016 | Conference Paper | LibreCat-ID: 2947
Blömer, J., & Günther, P. (2016). Singular Curve Point Decompression Attack. In 2015 Workshop on Fault Diagnosis and Tolerance in Cryptography (FDTC). IEEE. https://doi.org/10.1109/fdtc.2015.17
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2016 | Book Chapter | LibreCat-ID: 2948
Günther, P., & Krummel, V. (2016). Implementing Cryptographic Pairings on Accumulator Based Smart Card Architectures. In Mathematical Aspects of Computer and Information Sciences (pp. 151–165). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-319-32859-1_13
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2016 | Book Chapter | LibreCat-ID: 2968
Blömer, J., Lammersen, C., Schmidt, M., & Sohler, C. (2016). Theoretical Analysis of the k-Means Algorithm – A Survey. In Algorithm Engineering (pp. 81–116). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-319-49487-6_3
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2016 | Preprint | LibreCat-ID: 2969 | OA
Blömer, J., Brauer, S., & Bujna, K. (2016). Hard-Clustering with Gaussian Mixture Models. Computing Research Repository.
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2016 | Book Chapter | LibreCat-ID: 2970
Blömer, J., & Bujna, K. (2016). Adaptive Seeding for Gaussian Mixture Models. In Advances in Knowledge Discovery and Data Mining (pp. 296–308). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-319-31750-2_24
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2016 | Report | LibreCat-ID: 2971
Blömer, J., & Günther, P. (2016). Effizienz und Sicherheit paarungsbasierter Kryptographie. Tagungsband des 26. Fraunhofer SIT Smartcard-Workshops.
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2016 | Conference Paper | LibreCat-ID: 2367
Blömer, J., Brauer, S., & Bujna, K. (2016). A Theoretical Analysis of the Fuzzy K-Means Problem. In 2016 IEEE 16th International Conference on Data Mining (ICDM) (pp. 805–810). Barcelona, Spain: IEEE. https://doi.org/10.1109/icdm.2016.0094
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2016 | Conference Paper | LibreCat-ID: 208
Blömer, J., & Liske, G. (2016). Construction of Fully CCA-Secure Predicate Encryptions from Pair Encoding Schemes. In Proceedings of the CT-RSA 2016 (pp. 431–447). https://doi.org/10.1007/978-3-319-29485-8_25
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2016 | Dissertation | LibreCat-ID: 167
Günther, P. (2016). Physical attacks on pairing-based cryptography. Universität Paderborn.
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2016 | Book Chapter | LibreCat-ID: 2978
Blömer, J., & Bujna, K. (2016). Adaptive Seeding for Gaussian Mixture Models. In Advances in Knowledge Discovery and Data Mining (pp. 296–308). Springer International Publishing. https://doi.org/10.1007/978-3-319-31750-2_24
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2015 | Conference Paper | LibreCat-ID: 253
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
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2015 | Conference Paper | LibreCat-ID: 322 | OA
Blömer, J., Juhnke, J., & Kolb, C. (2015). Anonymous and Publicly Linkable Reputation Systems. In Proceedings of the 18th International Conference on Financial Cryptography and Data Security (FC) (pp. 478--488). https://doi.org/10.1007/978-3-662-47854-7_29
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2015 | Report | LibreCat-ID: 233 | OA
Blömer, J., & Kohn, K. (2015). Voronoi Cells of Lattices with Respect to Arbitrary Norms. Universität Paderborn.
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2014 | Conference Paper | LibreCat-ID: 355
Blömer, J., Günther, P., & Liske, G. (2014). Tampering attacks in pairing-based cryptography. In Proceedings of Fault Tolerance and Diagnosis in Cryptography(FDTC) (pp. 1--7). https://doi.org/10.1109/FDTC.2014.10
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2014 | Journal Article | LibreCat-ID: 2976
Ackermann, M. R., Blömer, J., Kuntze, D., & Sohler, C. (2014). Analysis of Agglomerative Clustering. Algorithmica, 69. https://doi.org/10.1007/s00453-012-9717-4
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2014 | Conference Paper | LibreCat-ID: 2977
Blömer, J., Bujna, K., & Kuntze, D. (2014). A Theoretical and Experimental Comparison of the EM and SEM Algorithm. In 2014 22nd International Conference on Pattern Recognition. IEEE. https://doi.org/10.1109/icpr.2014.253
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2014 | Preprint | LibreCat-ID: 442 | OA
Blömer, J., & Liske, G. (2014). Constructing CCA-secure predicate encapsulation schemes from CPA-secure schemes and universal one-way hash functions. Universität Paderborn.
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2014 | Conference Paper | LibreCat-ID: 463
Blömer, J., Gomes da Silva, R., Günther, P., Krämer, J., & Seifert, J.-P. (2014). A Practical Second-Order Fault Attack against a Real-World Pairing Implementation. In Proceedings of Fault Tolerance and Diagnosis in Cryptography(FDTC) (pp. 123--136). https://doi.org/10.1109/FDTC.2014.22
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2013 | Dissertation | LibreCat-ID: 2909
Kuntze, D. (2013). Practical algorithms for clustering and modeling large data sets - Analysis and improvements. Universität Paderborn.
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2013 | Report | LibreCat-ID: 2917
Juhnke, J., Lefmann, H., & Strehl, V. (2013). An Approach for Determining Optimal Contrast in Visual Cryptography. Fortschritt-Berichte VDI.
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