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109 Publications
2016 | Book Chapter | LibreCat-ID: 2970
Adaptive Seeding for Gaussian Mixture Models
J. Blömer, K. Bujna, in: Advances in Knowledge Discovery and Data Mining, Springer International Publishing, Cham, 2016, pp. 296–308.
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J. Blömer, K. Bujna, in: Advances in Knowledge Discovery and Data Mining, Springer International Publishing, Cham, 2016, pp. 296–308.
2016 | Book Chapter | LibreCat-ID: 2978
Adaptive Seeding for Gaussian Mixture Models
J. Blömer, K. Bujna, in: Advances in Knowledge Discovery and Data Mining, Springer International Publishing, Cham, 2016, pp. 296–308.
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| DOI
J. Blömer, K. Bujna, in: Advances in Knowledge Discovery and Data Mining, Springer International Publishing, Cham, 2016, pp. 296–308.
2011 | Dissertation | LibreCat-ID: 2910
Algorithms for lattice problems with respect to general norms
S. Naewe, Algorithms for Lattice Problems with Respect to General Norms, Universität Paderborn, 2011.
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S. Naewe, Algorithms for Lattice Problems with Respect to General Norms, Universität Paderborn, 2011.
2009 | Dissertation | LibreCat-ID: 2911
Algorithms for the Bregman k-Median Problem
M.R. Ackermann, Algorithms for the Bregman K-Median Problem, Universität Paderborn, 2009.
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M.R. Ackermann, Algorithms for the Bregman K-Median Problem, Universität Paderborn, 2009.
2013 | Report | LibreCat-ID: 2917
An Approach for Determining Optimal Contrast in Visual Cryptography
J. Juhnke, H. Lefmann, V. Strehl, An Approach for Determining Optimal Contrast in Visual Cryptography, Fortschritt-Berichte VDI, 2013.
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J. Juhnke, H. Lefmann, V. Strehl, An Approach for Determining Optimal Contrast in Visual Cryptography, Fortschritt-Berichte VDI, 2013.
1995 | Report | LibreCat-ID: 3038
An XOR-based erasure-resilient coding scheme
J. Blömer, M. Kalfane, R. Karp, M. Karpinski, M. Luby, D. Zuckerman, An XOR-Based Erasure-Resilient Coding Scheme, Berkeley, USA, 1995.
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J. Blömer, M. Kalfane, R. Karp, M. Karpinski, M. Luby, D. Zuckerman, An XOR-Based Erasure-Resilient Coding Scheme, Berkeley, USA, 1995.
2014 | Journal Article | LibreCat-ID: 2976
Analysis of Agglomerative Clustering
M.R. Ackermann, J. Blömer, D. Kuntze, C. Sohler, Algorithmica 69 (2014).
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M.R. Ackermann, J. Blömer, D. Kuntze, C. Sohler, Algorithmica 69 (2014).
2007 | Book Chapter | LibreCat-ID: 3002 | 
Analysis of Countermeasures Against Access Driven Cache Attacks on AES
J. Blömer, V. Krummel, in: Selected Areas in Cryptography, Springer Berlin Heidelberg, Berlin, Heidelberg, 2007, pp. 96–109.
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J. Blömer, V. Krummel, in: Selected Areas in Cryptography, Springer Berlin Heidelberg, Berlin, Heidelberg, 2007, pp. 96–109.
2015 | Conference Paper | LibreCat-ID: 322 |
Anonymous and Publicly Linkable Reputation Systems
J. Blömer, J. Juhnke, C. Kolb, in: Proceedings of the 18th International Conference on Financial Cryptography and Data Security (FC), 2015, pp. 478--488.
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J. Blömer, J. Juhnke, C. Kolb, in: Proceedings of the 18th International Conference on Financial Cryptography and Data Security (FC), 2015, pp. 478--488.
1995 | Journal Article | LibreCat-ID: 3037
Approximate matching of polygonal shapes
H. Alt, B. Behrends, J. Blömer, Annals of Mathematics and Artificial Intelligence 13 (1995).
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H. Alt, B. Behrends, J. Blömer, Annals of Mathematics and Artificial Intelligence 13 (1995).
1991 | Conference Paper | LibreCat-ID: 3048
Approximate matching of polygonal shapes (extended abstract)
H. Alt, B. Behrends, J. Blömer, in: Proceedings of the Seventh Annual Symposium on Computational Geometry - SCG ’91, ACM Press, 1991.
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H. Alt, B. Behrends, J. Blömer, in: Proceedings of the Seventh Annual Symposium on Computational Geometry - SCG ’91, ACM Press, 1991.
1990 | Book Chapter | LibreCat-ID: 3050
Approximation of convex polygons
H. Alt, J. Blömer, H. Wagener, in: Automata, Languages and Programming, Springer-Verlag, Berlin/Heidelberg, 1990, pp. 703–716.
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H. Alt, J. Blömer, H. Wagener, in: Automata, Languages and Programming, Springer-Verlag, Berlin/Heidelberg, 1990, pp. 703–716.
2017 | Conference Paper | LibreCat-ID: 2344 |
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, Cham, 2017, pp. 3–17.
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J. Blömer, P. Günther, V. Krummel, N. Löken, in: Foundations and Practice of Security, Springer International Publishing, Cham, 2017, pp. 3–17.
2010 | Book Chapter | LibreCat-ID: 2988
Bregman Clustering for Separable Instances
M.R. Ackermann, J. Blömer, in: SWAT 2010, Springer Berlin Heidelberg, Berlin, Heidelberg, 2010, pp. 212–223.
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M.R. Ackermann, J. Blömer, in: SWAT 2010, Springer Berlin Heidelberg, Berlin, Heidelberg, 2010, pp. 212–223.
2017 | Dissertation | LibreCat-ID: 116
CCA-Security for Predicate Encryption Schemes
G. Liske, CCA-Security for Predicate Encryption Schemes, Universität Paderborn, 2017.
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G. Liske, CCA-Security for Predicate Encryption Schemes, Universität Paderborn, 2017.
2019 | Dissertation | LibreCat-ID: 13679
Classification and Approximation of Geometric Location Problems
S. Brauer, Classification and Approximation of Geometric Location Problems, Paderborn, 2019.
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| DOI
S. Brauer, Classification and Approximation of Geometric Location Problems, Paderborn, 2019.
2000 | Book Chapter | LibreCat-ID: 3023
Closest Vectors, Successive Minima, and Dual HKZ-Bases of Lattices
J. Blömer, in: Automata, Languages and Programming, Springer Berlin Heidelberg, Berlin, Heidelberg, 2000, pp. 248–259.
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J. Blömer, in: Automata, Languages and Programming, Springer Berlin Heidelberg, Berlin, Heidelberg, 2000, pp. 248–259.
2018 | Conference Paper | LibreCat-ID: 2965
Cloud Architectures for Searchable Encryption
J. Blömer, N. Löken, in: Proceedings of the 13th International Conference on Availability, Reliability and Security, ARES 2018, ACM, New York, NY, USA, n.d., pp. 25:1--25:10.
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J. Blömer, N. Löken, in: Proceedings of the 13th International Conference on Availability, Reliability and Security, ARES 2018, ACM, New York, NY, USA, n.d., pp. 25:1--25:10.
2010 | Journal Article | LibreCat-ID: 2990
Clustering for Metric and Nonmetric Distance Measures
M.R. Ackermann, J. Blömer, C. Sohler, ACM Trans. Algorithms (2010) 59:1--59:26.
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M.R. Ackermann, J. Blömer, C. Sohler, ACM Trans. Algorithms (2010) 59:1--59:26.
2019 | Journal Article | LibreCat-ID: 2916
Complexity of single-swap heuristics for metric facility location and related problems
S. Brauer, Theoretical Computer Science 754 (2019) 88–106.
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S. Brauer, Theoretical Computer Science 754 (2019) 88–106.
2017 | Book Chapter | LibreCat-ID: 2381
Complexity of Single-Swap Heuristics for Metric Facility Location and Related Problems
S. Brauer, in: D. Fotakis, A. Pagourtzis, V.T. Paschos (Eds.), Lecture Notes in Computer Science, Springer International Publishing, Cham, 2017, pp. 116–127.
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S. Brauer, in: D. Fotakis, A. Pagourtzis, V.T. Paschos (Eds.), Lecture Notes in Computer Science, Springer International Publishing, Cham, 2017, pp. 116–127.
1991 | Conference Paper | LibreCat-ID: 3049
Computing sums of radicals in polynomial time
J. Blömer, in: Proceedings 32nd Annual Symposium of Foundations of Computer Science, IEEE Comput. Soc. Press, 1991.
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J. Blömer, in: Proceedings 32nd Annual Symposium of Foundations of Computer Science, IEEE Comput. Soc. Press, 1991.
2002 | Conference Paper | LibreCat-ID: 3041
Computing sums of radicals in polynomial time
J. Blömer, in: [1991] Proceedings 32nd Annual Symposium of Foundations of Computer Science, IEEE Comput. Soc. Press, 2002.
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J. Blömer, in: [1991] Proceedings 32nd Annual Symposium of Foundations of Computer Science, IEEE Comput. Soc. Press, 2002.
2004 | Book Chapter | LibreCat-ID: 3015
Computing the RSA Secret Key Is Deterministic Polynomial Time Equivalent to Factoring
A. May, in: Advances in Cryptology – CRYPTO 2004, Springer Berlin Heidelberg, Berlin, Heidelberg, 2004, pp. 213–219.
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A. May, in: Advances in Cryptology – CRYPTO 2004, Springer Berlin Heidelberg, Berlin, Heidelberg, 2004, pp. 213–219.
2014 | Preprint | LibreCat-ID: 442 |
Constructing CCA-secure predicate encapsulation schemes from CPA-secure schemes and universal one-way hash functions
J. Blömer, G. Liske, (2014).
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J. Blömer, G. Liske, (2014).
2016 | Conference Paper | LibreCat-ID: 208
Construction of Fully CCA-Secure Predicate Encryptions from Pair Encoding Schemes
J. Blömer, G. Liske, in: Proceedings of the CT-RSA 2016, 2016, pp. 431–447.
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J. Blömer, G. Liske, in: Proceedings of the CT-RSA 2016, 2016, pp. 431–447.
2009 | Book Chapter | LibreCat-ID: 2995
Coresets and Approximate Clustering for Bregman Divergences
M.R. Ackermann, J. Blömer, in: Proceedings of the Twentieth Annual ACM-SIAM Symposium on Discrete Algorithms, Society for Industrial and Applied Mathematics, Philadelphia, PA, 2009, pp. 1088–1097.
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M.R. Ackermann, J. Blömer, in: Proceedings of the Twentieth Annual ACM-SIAM Symposium on Discrete Algorithms, Society for Industrial and Applied Mathematics, Philadelphia, PA, 2009, pp. 1088–1097.
2018 | Conference Paper | LibreCat-ID: 4344
Coresets for Fuzzy K-Means with Applications
J. Blömer, S. Brauer, K. Bujna, in: 29th International Symposium on Algorithms and Computation (ISAAC 2018), Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik, 2018, pp. 46:1--46:12.
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| DOI
J. Blömer, S. Brauer, K. Bujna, in: 29th International Symposium on Algorithms and Computation (ISAAC 2018), Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik, 2018, pp. 46:1--46:12.
2007 | Book Chapter | LibreCat-ID: 3019
Cryptanalysis of Unbalanced RSA with Small CRT-Exponent
A. May, in: Advances in Cryptology — CRYPTO 2002, Springer Berlin Heidelberg, Berlin, Heidelberg, 2007, pp. 242–256.
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A. May, in: Advances in Cryptology — CRYPTO 2002, Springer Berlin Heidelberg, Berlin, Heidelberg, 2007, pp. 242–256.
2021 | Preprint | LibreCat-ID: 26645 |
Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes
J. Bobolz, F. Eidens, R. Heitjohann, J. Fell, (2021).
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J. Bobolz, F. Eidens, R. Heitjohann, J. Fell, (2021).
2020 | Dissertation | LibreCat-ID: 15482
Cryptography for the Crowd — A Study of Cryptographic Schemes with Applications to Crowd Work
N. Löken, Cryptography for the Crowd — A Study of Cryptographic Schemes with Applications to Crowd Work, 2020.
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| DOI
N. Löken, Cryptography for the Crowd — A Study of Cryptographic Schemes with Applications to Crowd Work, 2020.
2018 | Conference Paper | LibreCat-ID: 2379 |
Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures
J. Blömer, J. Bobolz, in: ACNS 2018 Applied Cryptography & Network Security, n.d.
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J. Blömer, J. Bobolz, in: ACNS 2018 Applied Cryptography & Network Security, n.d.
1997 | Book Chapter | LibreCat-ID: 3029
Denesting by bounded degree radicals
J. Blömer, in: Algorithms — ESA ’97, Springer Berlin Heidelberg, Berlin, Heidelberg, 1997, pp. 53–63.
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J. Blömer, in: Algorithms — ESA ’97, Springer Berlin Heidelberg, Berlin, Heidelberg, 1997, pp. 53–63.
2002 | Journal Article | LibreCat-ID: 35857
Denesting by Bounded Degree Radicals
J. Blömer, Algorithmica 28 (2002) 2–15.
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J. Blömer, Algorithmica 28 (2002) 2–15.
2023 | Conference Paper | LibreCat-ID: 44855
Designing Business Reputation Ecosystems — A Method for Issuing and Trading Monetary Ratings on a Blockchain
S. Hemmrich, J. Bobolz, D. Beverungen, J. Blömer, in: ECIS 2023 Research Papers, 2023.
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S. Hemmrich, J. Bobolz, D. Beverungen, J. Blömer, in: ECIS 2023 Research Papers, 2023.
2007 | Book Chapter | LibreCat-ID: 3022
Dimension Reduction Methods for Convolution Modular Lattices
A. May, J.H. Silverman, in: Lecture Notes in Computer Science, Springer Berlin Heidelberg, Berlin, Heidelberg, 2007, pp. 110–125.
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A. May, J.H. Silverman, in: Lecture Notes in Computer Science, Springer Berlin Heidelberg, Berlin, Heidelberg, 2007, pp. 110–125.
2013 | Preprint | LibreCat-ID: 538 |
Direct Chosen-Ciphertext Secure Attribute-Based Key Encapsulations without Random Oracles
J. Blömer, G. Liske, (2013).
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J. Blömer, G. Liske, (2013).
2019 | Conference Paper | LibreCat-ID: 13557 |
Dynamic Searchable Encryption with Access Control
J. Blömer, N. Löken, in: 12th International Symposium on Foundations and Practice of Security, FPS 2019, Springer, 2019.
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J. Blömer, N. Löken, in: 12th International Symposium on Foundations and Practice of Security, FPS 2019, Springer, 2019.
2010 | Conference Paper | LibreCat-ID: 2993
Efficient and Compact CCA Security from Partitioned IBKEM
J. Schrieb, (2010).
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J. Schrieb, (2010).
2016 | Report | LibreCat-ID: 2971
Effizienz und Sicherheit paarungsbasierter Kryptographie
J. Blömer, P. Günther, Effizienz Und Sicherheit Paarungsbasierter Kryptographie, Tagungsband des 26. Fraunhofer SIT Smartcard-Workshops, 2016.
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J. Blömer, P. Günther, Effizienz Und Sicherheit Paarungsbasierter Kryptographie, Tagungsband des 26. Fraunhofer SIT Smartcard-Workshops, 2016.
2010 | Conference Paper | LibreCat-ID: 2994
Engineering self-coordinating software intensive systems
W. Schäfer, A. Trächtler, M. Birattari, J. Blömer, M. Dorigo, G. Engels, R. O’Grady, M. Platzner, F. Rammig, W. Reif, in: Proceedings of the FSE/SDP Workshop on Future of Software Engineering Research - FoSER ’10, ACM Press, 2010.
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| DOI
W. Schäfer, A. Trächtler, M. Birattari, J. Blömer, M. Dorigo, G. Engels, R. O’Grady, M. Platzner, F. Rammig, W. Reif, in: Proceedings of the FSE/SDP Workshop on Future of Software Engineering Research - FoSER ’10, ACM Press, 2010.
2018 | Conference Paper | LibreCat-ID: 3873 |
Enhanced Security of Attribute-Based Signatures
J. Blömer, F. Eidens, J. Juhnke, in: The International Conference on Cryptology And Network Security (CANS), Springer, 2018, pp. 235–255.
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J. Blömer, F. Eidens, J. Juhnke, in: The International Conference on Cryptology And Network Security (CANS), Springer, 2018, pp. 235–255.
2005 | Dissertation | LibreCat-ID: 2913
Fault Attacks and Countermeasures
M. Otto, Fault Attacks and Countermeasures, Universität Paderborn, 2005.
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M. Otto, Fault Attacks and Countermeasures, Universität Paderborn, 2005.
2006 | Book Chapter | LibreCat-ID: 3004
Fault Based Collision Attacks on AES
J. Blömer, V. Krummel, in: Lecture Notes in Computer Science, Springer Berlin Heidelberg, Berlin, Heidelberg, 2006, pp. 106–120.
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J. Blömer, V. Krummel, in: Lecture Notes in Computer Science, Springer Berlin Heidelberg, Berlin, Heidelberg, 2006, pp. 106–120.
2003 | Book Chapter | LibreCat-ID: 3018
Fault Based Cryptanalysis of the Advanced Encryption Standard (AES)
J. Blömer, J.-P. Seifert, in: Financial Cryptography, Springer Berlin Heidelberg, Berlin, Heidelberg, 2003, pp. 162–181.
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J. Blömer, J.-P. Seifert, in: Financial Cryptography, Springer Berlin Heidelberg, Berlin, Heidelberg, 2003, pp. 162–181.
2018 | Conference Paper | LibreCat-ID: 3265 |
Fully-Featured Anonymous Credentials with Reputation System
K. Bemmann, J. Blömer, J. Bobolz, H. Bröcher, D.P. Diemert, F. Eidens, L. Eilers, J.F. Haltermann, J. Juhnke, B. Otour, L.A. Porzenheim, S. Pukrop, E. Schilling, M. Schlichtig, M. Stienemeier, in: Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18, ACM, New York, NY, USA, n.d.
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K. Bemmann, J. Blömer, J. Bobolz, H. Bröcher, D.P. Diemert, F. Eidens, L. Eilers, J.F. Haltermann, J. Juhnke, B. Otour, L.A. Porzenheim, S. Pukrop, E. Schilling, M. Schlichtig, M. Stienemeier, in: Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18, ACM, New York, NY, USA, n.d.
2016 | Preprint | LibreCat-ID: 2969 |
Hard-Clustering with Gaussian Mixture Models
J. Blömer, S. Brauer, K. Bujna, (2016).
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J. Blömer, S. Brauer, K. Bujna, (2016).
2011 | Conference Paper | LibreCat-ID: 2985
Hardness and Non-Approximability of Bregman Clustering Problems.
M.R. Ackermann, J. Blömer, C. Scholz, (2011).
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M.R. Ackermann, J. Blömer, C. Scholz, (2011).
1992 | Conference Paper | LibreCat-ID: 3047
How to denest Ramanujan's nested radicals
J. Blömer, in: Proceedings., 33rd Annual Symposium on Foundations of Computer Science, IEEE, 1992.
LibreCat
| DOI
J. Blömer, in: Proceedings., 33rd Annual Symposium on Foundations of Computer Science, IEEE, 1992.
2011 | Book Chapter | LibreCat-ID: 2986
How to Share a Secret
J. Blömer, in: Algorithms Unplugged, Springer Berlin Heidelberg, Berlin, Heidelberg, 2011, pp. 159–168.
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| DOI
J. Blömer, in: Algorithms Unplugged, Springer Berlin Heidelberg, Berlin, Heidelberg, 2011, pp. 159–168.
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