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79 Publications


2020 | Journal Article | LibreCat-ID: 20888
J. Blömer, S. Brauer, and K. Bujna, “A Complexity Theoretical Study of Fuzzy K-Means,” ACM Transactions on Algorithms, vol. 16, no. 4, pp. 1–25, 2020.
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2004 | Book Chapter | LibreCat-ID: 3012
J. Blömer and A. May, “A Generalized Wiener Attack on RSA,” in Public Key Cryptography – PKC 2004, Berlin, Heidelberg: Springer Berlin Heidelberg, 2004, pp. 1–13.
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2023 | Conference Paper | LibreCat-ID: 43458 | OA
J. Blömer, J. Bobolz, and L. A. Porzenheim, “A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices,” presented at the Asiacrypt 2023, Guangzhou, China, 2023.
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1998 | Journal Article | LibreCat-ID: 3028
J. Blömer and B. Trachsler, “A lower bound for a class of graph based loss resilient codes,” Technical report/Departement of Computer Science, ETH Zürich, 1998.
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2004 | Conference Paper | LibreCat-ID: 3017
J. Blömer, M. Otto, and J.-P. Seifert, “A new CRT-RSA algorithm secure against bellcore attacks,” in Proceedings of the 10th ACM conference on Computer and communication security  - CCS ’03, 2004.
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2014 | Conference Paper | LibreCat-ID: 463
J. Blömer, R. Gomes da Silva, P. Günther, J. Krämer, and J.-P. Seifert, “A Practical Second-Order Fault Attack against a Real-World Pairing Implementation,” in Proceedings of Fault Tolerance and Diagnosis in Cryptography(FDTC), 2014, pp. 123--136.
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2007 | Book Chapter | LibreCat-ID: 3026
J. Blömer, “A Probabilistic Zero-Test for Expressions Involving Roots of Rational Numbers,” in Algorithms — ESA’ 98, Berlin, Heidelberg: Springer Berlin Heidelberg, 2007, pp. 151–162.
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2016 | Conference Paper | LibreCat-ID: 2367
J. Blömer, S. Brauer, and K. Bujna, “A Theoretical Analysis of the Fuzzy K-Means Problem,” in 2016 IEEE 16th International Conference on Data Mining (ICDM), Barcelona, Spain, 2016, pp. 805–810.
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2014 | Conference Paper | LibreCat-ID: 2977
J. Blömer, K. Bujna, and D. Kuntze, “A Theoretical and Experimental Comparison of the EM and SEM Algorithm,” in 2014 22nd International Conference on Pattern Recognition, 2014.
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2005 | Book Chapter | LibreCat-ID: 3006
J. Blömer and A. May, “A Tool Kit for Finding Small Roots of Bivariate Polynomials over the Integers,” in EUROCRYPT 2005, Berlin, Heidelberg: Springer Berlin Heidelberg, 2005, pp. 251–267.
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2016 | Book Chapter | LibreCat-ID: 2970
J. Blömer and K. Bujna, “Adaptive Seeding for Gaussian Mixture Models,” in Advances in Knowledge Discovery and Data Mining, Cham: Springer International Publishing, 2016, pp. 296–308.
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2016 | Book Chapter | LibreCat-ID: 2978
J. Blömer and K. Bujna, “Adaptive Seeding for Gaussian Mixture Models,” in Advances in Knowledge Discovery and Data Mining, Cham: Springer International Publishing, 2016, pp. 296–308.
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1995 | Report | LibreCat-ID: 3038
J. Blömer, M. Kalfane, R. Karp, M. Karpinski, M. Luby, and D. Zuckerman, An XOR-based erasure-resilient coding scheme. Berkeley, USA, 1995.
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2014 | Journal Article | LibreCat-ID: 2976
M. R. Ackermann, J. Blömer, D. Kuntze, and C. Sohler, “Analysis of Agglomerative Clustering,” Algorithmica, vol. 69, 2014.
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2007 | Book Chapter | LibreCat-ID: 3002 | OA
J. Blömer and V. Krummel, “Analysis of Countermeasures Against Access Driven Cache Attacks on AES,” in Selected Areas in Cryptography, Berlin, Heidelberg: Springer Berlin Heidelberg, 2007, pp. 96–109.
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2015 | Conference Paper | LibreCat-ID: 322 | OA
J. Blömer, J. Juhnke, and C. Kolb, “Anonymous and Publicly Linkable Reputation Systems,” in Proceedings of the 18th International Conference on Financial Cryptography and Data Security (FC), 2015, pp. 478--488.
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1995 | Journal Article | LibreCat-ID: 3037
H. Alt, B. Behrends, and J. Blömer, “Approximate matching of polygonal shapes,” Annals of Mathematics and Artificial Intelligence, vol. 13, no. 3, 1995.
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1991 | Conference Paper | LibreCat-ID: 3048
H. Alt, B. Behrends, and J. Blömer, “Approximate matching of polygonal shapes (extended abstract),” in Proceedings of the seventh annual symposium on Computational geometry  - SCG ’91, 1991.
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1990 | Book Chapter | LibreCat-ID: 3050
H. Alt, J. Blömer, and H. Wagener, “Approximation of convex polygons,” in Automata, Languages and Programming, Berlin/Heidelberg: Springer-Verlag, 1990, pp. 703–716.
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2017 | Conference Paper | LibreCat-ID: 2344 | OA
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.
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2010 | Book Chapter | LibreCat-ID: 2988
M. R. Ackermann and J. Blömer, “Bregman Clustering for Separable Instances,” in SWAT 2010, Berlin, Heidelberg: Springer Berlin Heidelberg, 2010, pp. 212–223.
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2000 | Book Chapter | LibreCat-ID: 3023
J. Blömer, “Closest Vectors, Successive Minima, and Dual HKZ-Bases of Lattices,” in Automata, Languages and Programming, Berlin, Heidelberg: Springer Berlin Heidelberg, 2000, pp. 248–259.
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2018 | Conference Paper | LibreCat-ID: 2965
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.
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2010 | Journal Article | LibreCat-ID: 2990
M. R. Ackermann, J. Blömer, and C. Sohler, “Clustering for Metric and Nonmetric Distance Measures,” ACM Trans. Algorithms, no. 4, pp. 59:1--59:26, 2010.
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1991 | Conference Paper | LibreCat-ID: 3049
J. Blömer, “Computing sums of radicals in polynomial time,” in Proceedings 32nd Annual Symposium of Foundations of Computer Science, 1991.
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2002 | Conference Paper | LibreCat-ID: 3041
J. Blömer, “Computing sums of radicals in polynomial time,” 2002, doi: 10.1109/sfcs.1991.185434.
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2014 | Preprint | LibreCat-ID: 442 | OA
J. Blömer and G. Liske, “Constructing CCA-secure predicate encapsulation schemes from CPA-secure schemes and universal one-way hash functions.” Universität Paderborn, 2014.
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2016 | Conference Paper | LibreCat-ID: 208
J. Blömer and G. Liske, “Construction of Fully CCA-Secure Predicate Encryptions from Pair Encoding Schemes,” in Proceedings of the CT-RSA 2016, 2016, pp. 431–447.
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2009 | Book Chapter | LibreCat-ID: 2995
M. R. Ackermann and J. Blömer, “Coresets and Approximate Clustering for Bregman Divergences,” in Proceedings of the Twentieth Annual ACM-SIAM Symposium on Discrete Algorithms, Philadelphia, PA: Society for Industrial and Applied Mathematics, 2009, pp. 1088–1097.
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2018 | Conference Paper | LibreCat-ID: 4344
J. Blömer, S. Brauer, and K. Bujna, “Coresets for Fuzzy K-Means with Applications,” in 29th International Symposium on Algorithms and Computation  (ISAAC 2018), Jiaoxi, Yilan County, Taiwan, 2018, pp. 46:1--46:12.
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2018 | Conference Paper | LibreCat-ID: 2379 | OA
J. Blömer and J. Bobolz, “Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures,” presented at the The 16th International Conference on Applied Cryptography and Network Security, Leuven, Belgium, doi: 10.1007/978-3-319-93387-0_12.
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1997 | Book Chapter | LibreCat-ID: 3029
J. Blömer, “Denesting by bounded degree radicals,” in Algorithms — ESA ’97, Berlin, Heidelberg: Springer Berlin Heidelberg, 1997, pp. 53–63.
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2023 | Conference Paper | LibreCat-ID: 44855
S. Hemmrich, J. Bobolz, D. Beverungen, and J. Blömer, “Designing Business Reputation Ecosystems — A Method for Issuing and Trading Monetary Ratings on a Blockchain,” presented at the ECIS 2023, 2023.
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2013 | Preprint | LibreCat-ID: 538 | OA
J. Blömer and G. Liske, “Direct Chosen-Ciphertext Secure Attribute-Based Key Encapsulations without Random Oracles.” Universität Paderborn, 2013.
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2019 | Conference Paper | LibreCat-ID: 13557 | OA
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.
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2016 | Report | LibreCat-ID: 2971
J. Blömer and P. Günther, Effizienz und Sicherheit paarungsbasierter Kryptographie. Tagungsband des 26. Fraunhofer SIT Smartcard-Workshops, 2016.
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2010 | Conference Paper | LibreCat-ID: 2994
W. Schäfer et al., “Engineering self-coordinating software intensive systems,” in Proceedings of the FSE/SDP workshop on Future of software engineering research - FoSER ’10, 2010.
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2018 | Conference Paper | LibreCat-ID: 3873 | OA
J. Blömer, F. Eidens, and J. Juhnke, “Enhanced Security of Attribute-Based Signatures,” in The International Conference on Cryptology And Network Security (CANS), Naples, Italy, 2018, vol. 11124, pp. 235–255, doi: 10.1007/978-3-030-00434-7_12.
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2006 | Book Chapter | LibreCat-ID: 3004
J. Blömer and V. Krummel, “Fault Based Collision Attacks on AES,” in Lecture Notes in Computer Science, Berlin, Heidelberg: Springer Berlin Heidelberg, 2006, pp. 106–120.
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2003 | Book Chapter | LibreCat-ID: 3018
J. Blömer and J.-P. Seifert, “Fault Based Cryptanalysis of the Advanced Encryption Standard (AES),” in Financial Cryptography, Berlin, Heidelberg: Springer Berlin Heidelberg, 2003, pp. 162–181.
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2018 | Conference Paper | LibreCat-ID: 3265 | OA
K. Bemmann et al., “Fully-Featured Anonymous Credentials with Reputation System,” in Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18, Hamburg, Germany.
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2016 | Preprint | LibreCat-ID: 2969 | OA
J. Blömer, S. Brauer, and K. Bujna, “Hard-Clustering with Gaussian Mixture Models.” Computing Research Repository, 2016.
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2011 | Conference Paper | LibreCat-ID: 2985
M. R. Ackermann, J. Blömer, and C. Scholz, “Hardness and Non-Approximability of Bregman Clustering Problems.” 2011.
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1992 | Conference Paper | LibreCat-ID: 3047
J. Blömer, “How to denest Ramanujan’s nested radicals,” in Proceedings., 33rd Annual Symposium on Foundations of Computer Science, 1992.
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2011 | Book Chapter | LibreCat-ID: 2986
J. Blömer, “How to Share a Secret,” in Algorithms Unplugged, Berlin, Heidelberg: Springer Berlin Heidelberg, 2011, pp. 159–168.
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2020 | Journal Article | LibreCat-ID: 10790
J. Blömer, S. Brauer, K. Bujna, and D. Kuntze, “How well do SEM algorithms imitate EM algorithms? A non-asymptotic analysis for mixture models,” Advances in Data Analysis and Classification, vol. 14, pp. 147–173, 2020.
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2013 | Book Chapter | LibreCat-ID: 2979
J. Blömer, P. Günther, and G. Liske, “Improved Side Channel Attacks on Pairing Based Cryptography,” in Constructive Side-Channel Analysis and Secure Design, Berlin, Heidelberg: Springer Berlin Heidelberg, 2013, pp. 154–168.
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2007 | Book Chapter | LibreCat-ID: 3021
J. Blömer and A. May, “Key Revocation with Interval Cover Families,” in Selected Areas in Cryptography, Berlin, Heidelberg: Springer Berlin Heidelberg, 2007, pp. 325–341.
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2007 | Book Chapter | LibreCat-ID: 3020
J. Blömer and A. May, “Low Secret Exponent RSA Revisited,” in Lecture Notes in Computer Science, Berlin, Heidelberg: Springer Berlin Heidelberg, 2007, pp. 4–19.
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2003 | Book Chapter | LibreCat-ID: 3016
J. Blömer and A. May, “New Partial Key Exposure Attacks on RSA,” in Advances in Cryptology - CRYPTO 2003, Berlin, Heidelberg: Springer Berlin Heidelberg, 2003, pp. 27–43.
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