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79 Publications


2023 | Conference Paper | LibreCat-ID: 44855
Hemmrich, Simon, et al. “Designing Business Reputation Ecosystems — A Method for Issuing and Trading Monetary Ratings on a Blockchain.” ECIS 2023 Research Papers, 2023.
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2023 | Book Chapter | LibreCat-ID: 45901 | OA
Blömer, Johannes, et al. “Practical Cryptograhic Techniques for Secure and Privacy-Preserving Customer Loyalty Systems.” On-The-Fly Computing -- Individualized IT-Services in Dynamic Markets, edited by Claus-Jochen Haake et al., vol. 412, Heinz Nixdorf Institut, Universität Paderborn, 2023, pp. 237–46, doi:10.5281/zenodo.8068755.
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2023 | Book Chapter | LibreCat-ID: 45891 | OA
Blömer, Johannes, et al. “Robustness and Security.” On-The-Fly Computing -- Individualized IT-Services in Dynamic Markets, edited by Claus-Jochen Haake et al., vol. 412, Heinz Nixdorf Institut, Universität Paderborn, 2023, pp. 145–64, doi:10.5281/zenodo.8068629.
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2023 | Conference Paper | LibreCat-ID: 35014 | OA
Blömer, Johannes, et al. On the Impossibility of Surviving (Iterated) Deletion of Weakly Dominated Strategies in Rational MPC. 2023.
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2023 | Conference Paper | LibreCat-ID: 43458 | OA
Blömer, Johannes, et al. A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices. 2023.
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2020 | Journal Article | LibreCat-ID: 20888
Blömer, Johannes, et al. “A Complexity Theoretical Study of Fuzzy K-Means.” ACM Transactions on Algorithms, vol. 16, no. 4, 2020, pp. 1–25, doi:10.1145/3409385.
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2020 | Journal Article | LibreCat-ID: 10790
Blömer, Johannes, et al. “How Well Do SEM Algorithms Imitate EM Algorithms? A Non-Asymptotic Analysis for Mixture Models.” Advances in Data Analysis and Classification, vol. 14, 2020, pp. 147–173, doi:10.1007/s11634-019-00366-7.
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2019 | Conference Paper | LibreCat-ID: 13554 | OA
Blömer, Johannes, and Nils Löken. “Personal Cross-Platform Reputation.” Security and Trust Management, STM 2019, vol. 11738, 2019, doi:10.1007/978-3-030-31511-5_9.
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2019 | Conference Paper | LibreCat-ID: 13557 | OA
Blömer, Johannes, and Nils Löken. “Dynamic Searchable Encryption with Access Control.” 12th International Symposium on Foundations and Practice of Security, FPS 2019, vol. 12056, Springer, 2019.
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2019 | Conference Paper | LibreCat-ID: 13904 | OA
Blömer, Johannes, et al. “Updatable Anonymous Credentials and Applications to Incentive Systems.” Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19, 2019, doi:10.1145/3319535.3354223.
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2018 | Conference Paper | LibreCat-ID: 2862 | OA
Blömer, Johannes, et al. “Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems.” Topics in Cryptology - {CT-RSA} 2018 - The Cryptographers’ Track at the {RSA} Conference 2018, Proceedings, Springer International Publishing, 2018, pp. 470–90, doi:10.1007/978-3-319-76953-0_25.
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2018 | Journal Article | LibreCat-ID: 2685
Blömer, Johannes, and Kathlén Kohn. “Voronoi Cells of Lattices with Respect to Arbitrary Norms.” SIAM Journal on Applied Algebra and Geometry., vol. 2, no. 2, 2018, pp. 314–38, doi:10.1137/17M1132045.
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2018 | Conference Paper | LibreCat-ID: 3265 | OA
Bemmann, Kai, et al. “Fully-Featured Anonymous Credentials with Reputation System.” Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18, ACM, doi:10.1145/3230833.3234517.
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2018 | Conference Paper | LibreCat-ID: 2965
Blömer, Johannes, and Nils Löken. “Cloud Architectures for Searchable Encryption.” Proceedings of the 13th International Conference on Availability, Reliability and Security, ARES 2018, ACM, pp. 25:1--25:10, doi:10.1145/3230833.3230853.
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2018 | Working Paper | LibreCat-ID: 5820
Blömer, Johannes, et al. Provably Anonymous Communication Based on Trusted Execution Environments.
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2018 | Conference Paper | LibreCat-ID: 4344
Blömer, Johannes, et al. “Coresets for Fuzzy K-Means with Applications.” 29th International Symposium on Algorithms and Computation  (ISAAC 2018), Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik, 2018, pp. 46:1--46:12, doi:10.4230/LIPIcs.ISAAC.2018.46.
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2018 | Conference Paper | LibreCat-ID: 3873 | OA
Blömer, Johannes, et al. “Enhanced Security of Attribute-Based Signatures.” The International Conference on Cryptology And Network Security (CANS), vol. 11124, Springer, 2018, pp. 235–55, doi:10.1007/978-3-030-00434-7_12.
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2018 | Conference Paper | LibreCat-ID: 2379 | OA
Blömer, Johannes, and Jan Bobolz. “Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures.” ACNS 2018 Applied Cryptography & Network Security, doi:10.1007/978-3-319-93387-0_12.
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2017 | Conference Paper | LibreCat-ID: 2967 | OA
Blömer, Johannes, and Gennadij Liske. “Subtleties in Security Definitions for Predicate Encryption with Public Index.” Proceedings of the International Conference of Mathematical Aspects of Computer and Information Sciences (MACIS), vol. 10693, Springer International Publishing, 2017, pp. 438–53, doi:10.1007/978-3-319-72453-9_35.
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2017 | Conference Paper | LibreCat-ID: 2344 | OA
Blömer, Johannes, et al. “Attribute-Based Encryption as a Service for Access Control in Large-Scale Organizations.” Foundations and Practice of Security, Springer International Publishing, 2017, pp. 3–17, doi:10.1007/978-3-319-75650-9_1.
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2016 | Conference Paper | LibreCat-ID: 2947
Blömer, Johannes, and Peter Günther. “Singular Curve Point Decompression Attack.” 2015 Workshop on Fault Diagnosis and Tolerance in Cryptography (FDTC), IEEE, 2016, doi:10.1109/fdtc.2015.17.
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2016 | Book Chapter | LibreCat-ID: 2968
Blömer, Johannes, et al. “Theoretical Analysis of the K-Means Algorithm – A Survey.” Algorithm Engineering, Springer International Publishing, 2016, pp. 81–116, doi:10.1007/978-3-319-49487-6_3.
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2016 | Preprint | LibreCat-ID: 2969 | OA
Blömer, Johannes, et al. Hard-Clustering with Gaussian Mixture Models. Computing Research Repository, 2016.
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2016 | Book Chapter | LibreCat-ID: 2970
Blömer, Johannes, and Kathrin Bujna. “Adaptive Seeding for Gaussian Mixture Models.” Advances in Knowledge Discovery and Data Mining, Springer International Publishing, 2016, pp. 296–308, doi:10.1007/978-3-319-31750-2_24.
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2016 | Report | LibreCat-ID: 2971
Blömer, Johannes, and Peter Günther. Effizienz Und Sicherheit Paarungsbasierter Kryptographie. Tagungsband des 26. Fraunhofer SIT Smartcard-Workshops, 2016.
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2016 | Conference Paper | LibreCat-ID: 2367
Blömer, Johannes, et al. “A Theoretical Analysis of the Fuzzy K-Means Problem.” 2016 IEEE 16th International Conference on Data Mining (ICDM), IEEE, 2016, pp. 805–10, doi:10.1109/icdm.2016.0094.
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2016 | Conference Paper | LibreCat-ID: 208
Blömer, Johannes, and Gennadij Liske. “Construction of Fully CCA-Secure Predicate Encryptions from Pair Encoding Schemes.” Proceedings of the CT-RSA 2016, 2016, pp. 431–47, doi:10.1007/978-3-319-29485-8_25.
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2016 | Book Chapter | LibreCat-ID: 2978
Blömer, Johannes, and Kathrin Bujna. “Adaptive Seeding for Gaussian Mixture Models.” Advances in Knowledge Discovery and Data Mining, Springer International Publishing, 2016, pp. 296–308, doi:10.1007/978-3-319-31750-2_24.
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2015 | Conference Paper | LibreCat-ID: 253
Blömer, Johannes, et al. “Short Group Signatures with Distributed Traceability.” Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS), 2015, pp. 166–80, doi:10.1007/978-3-319-32859-1_14.
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2015 | Conference Paper | LibreCat-ID: 322 | OA
Blömer, Johannes, et al. “Anonymous and Publicly Linkable Reputation Systems.” Proceedings of the 18th International Conference on Financial Cryptography and Data Security (FC), 2015, pp. 478--488, doi:10.1007/978-3-662-47854-7_29.
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2015 | Report | LibreCat-ID: 233 | OA
Blömer, Johannes, and Kathlén Kohn. Voronoi Cells of Lattices with Respect to Arbitrary Norms. Universität Paderborn, 2015.
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2014 | Conference Paper | LibreCat-ID: 355
Blömer, Johannes, et al. “Tampering Attacks in Pairing-Based Cryptography.” Proceedings of Fault Tolerance and Diagnosis in Cryptography(FDTC), 2014, pp. 1--7, doi:10.1109/FDTC.2014.10.
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2014 | Journal Article | LibreCat-ID: 2976
Ackermann, Marcel Rudolf, et al. “Analysis of Agglomerative Clustering.” Algorithmica, vol. 69, Springer US, 2014, doi:10.1007/s00453-012-9717-4.
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2014 | Conference Paper | LibreCat-ID: 2977
Blömer, Johannes, et al. “A Theoretical and Experimental Comparison of the EM and SEM Algorithm.” 2014 22nd International Conference on Pattern Recognition, IEEE, 2014, doi:10.1109/icpr.2014.253.
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2014 | Preprint | LibreCat-ID: 442 | OA
Blömer, Johannes, and Gennadij Liske. Constructing CCA-Secure Predicate Encapsulation Schemes from CPA-Secure Schemes and Universal One-Way Hash Functions. Universität Paderborn, 2014.
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2014 | Conference Paper | LibreCat-ID: 463
Blömer, Johannes, et al. “A Practical Second-Order Fault Attack against a Real-World Pairing Implementation.” Proceedings of Fault Tolerance and Diagnosis in Cryptography(FDTC), 2014, pp. 123--136, doi:10.1109/FDTC.2014.22.
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2013 | Book Chapter | LibreCat-ID: 2979
Blömer, Johannes, et al. “Improved Side Channel Attacks on Pairing Based Cryptography.” Constructive Side-Channel Analysis and Secure Design, Springer Berlin Heidelberg, 2013, pp. 154–68, doi:10.1007/978-3-642-40026-1_10.
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2013 | Conference Paper | LibreCat-ID: 488
Blömer, Johannes, et al. “Securing Critical Unattended Systems with Identity Based Cryptography - A Case Study.” Proceedings of the 5th International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS), 2013, pp. 98–105.
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2013 | Preprint | LibreCat-ID: 538 | OA
Blömer, Johannes, and Gennadij Liske. Direct Chosen-Ciphertext Secure Attribute-Based Key Encapsulations without Random Oracles. Universität Paderborn, 2013.
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2012 | Journal Article | LibreCat-ID: 2984
Blömer, Johannes. “Turing Und Kryptografie.” Informatik-Spektrum, vol. 35, no. 4, 2012, doi:10.1007/s00287-012-0622-7.
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2011 | Conference Paper | LibreCat-ID: 2985
Ackermann, Marcel R., et al. Hardness and Non-Approximability of Bregman Clustering Problems. 2011.
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2011 | Book Chapter | LibreCat-ID: 2986
Blömer, Johannes. “How to Share a Secret.” Algorithms Unplugged, Springer Berlin Heidelberg, 2011, pp. 159–68, doi:10.1007/978-3-642-15328-0_17.
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2011 | Preprint | LibreCat-ID: 2987
Blömer, Johannes, and Stefanie Naewe. “Solving the Closest Vector Problem with Respect to Lp Norms.” ArXiv:1104.3720, 2011.
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2010 | Book Chapter | LibreCat-ID: 2988
Ackermann, Marcel R., and Johannes Blömer. “Bregman Clustering for Separable Instances.” SWAT 2010, Springer Berlin Heidelberg, 2010, pp. 212–23, doi:10.1007/978-3-642-13731-0_21.
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2010 | Journal Article | LibreCat-ID: 2990
Ackermann, Marcel R., et al. “Clustering for Metric and Nonmetric Distance Measures.” ACM Trans. Algorithms, no. 4, 2010, pp. 59:1--59:26, doi:10.1145/1824777.1824779.
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2010 | Journal Article | LibreCat-ID: 2991
Krueger, Alexander, et al. “On the Initialization of Dynamic Models for Speech Features.” Proc. of ITG Fachtagung Sprachkommunikation. ITG, Bochum, Germany, 2010.
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2010 | Conference Paper | LibreCat-ID: 2994
Schäfer, Wilhelm, et al. “Engineering Self-Coordinating Software Intensive Systems.” Proceedings of the FSE/SDP Workshop on Future of Software Engineering Research - FoSER ’10, ACM Press, 2010, doi:10.1145/1882362.1882428.
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2009 | Book Chapter | LibreCat-ID: 2995
Ackermann, Marcel R., and Johannes Blömer. “Coresets and Approximate Clustering for Bregman Divergences.” Proceedings of the Twentieth Annual ACM-SIAM Symposium on Discrete Algorithms, Society for Industrial and Applied Mathematics, 2009, pp. 1088–97, doi:10.1137/1.9781611973068.118.
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2009 | Journal Article | LibreCat-ID: 2999
Blömer, Johannes, and Stefanie Naewe. “Sampling Methods for Shortest Vectors, Closest Vectors and Successive Minima.” Theoretical Computer Science, no. 18, 2009, pp. 1648–65, doi:10.1016/j.tcs.2008.12.045.
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2007 | Book Chapter | LibreCat-ID: 3002 | OA
Blömer, Johannes, and Volker Krummel. “Analysis of Countermeasures Against Access Driven Cache Attacks on AES.” Selected Areas in Cryptography, Springer Berlin Heidelberg, 2007, pp. 96–109, doi:10.1007/978-3-540-77360-3_7.
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