Please note that LibreCat no longer supports Internet Explorer versions 8 or 9 (or earlier).
We recommend upgrading to the latest Internet Explorer, Google Chrome, or Firefox.
109 Publications
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.
LibreCat
| Files available
| Download (ext.)
S. Hemmrich, J. Bobolz, D. Beverungen, J. Blömer, in: ECIS 2023 Research Papers, 2023.
2023 | Conference Paper | LibreCat-ID: 35014 | 
On the impossibility of surviving (iterated) deletion of weakly dominated strategies in rational MPC
J. Blömer, J. Bobolz, H. Bröcher, in: 2023.
LibreCat
| Download (ext.)
J. Blömer, J. Bobolz, H. Bröcher, in: 2023.
2023 | Conference Paper | LibreCat-ID: 43458 |
A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices
J. Blömer, J. Bobolz, L.A. Porzenheim, in: 2023.
LibreCat
| Download (ext.)
J. Blömer, J. Bobolz, L.A. Porzenheim, in: 2023.
2022 | Dissertation | LibreCat-ID: 35188
Privacy-Preserving Cryptography: Attribute-Based Signatures and Updatable Credentials
F. Eidens, Privacy-Preserving Cryptography: Attribute-Based Signatures and Updatable Credentials, 2022.
LibreCat
| DOI
F. Eidens, Privacy-Preserving Cryptography: Attribute-Based Signatures and Updatable Credentials, 2022.
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).
LibreCat
| Download (ext.)
J. Bobolz, F. Eidens, R. Heitjohann, J. Fell, (2021).
2021 | Conference Paper | LibreCat-ID: 29566
Issuer-Hiding Attribute-Based Credentials
J. Bobolz, F. Eidens, S. Krenn, S. Ramacher, K. Samelin, in: Cryptology and Network Security, Springer International Publishing, Cham, 2021.
LibreCat
| DOI
J. Bobolz, F. Eidens, S. Krenn, S. Ramacher, K. Samelin, in: Cryptology and Network Security, Springer International Publishing, Cham, 2021.
2020 | Journal Article | LibreCat-ID: 20888
A Complexity Theoretical Study of Fuzzy K-Means
J. Blömer, S. Brauer, K. Bujna, ACM Transactions on Algorithms 16 (2020) 1–25.
LibreCat
| DOI
J. Blömer, S. Brauer, K. Bujna, ACM Transactions on Algorithms 16 (2020) 1–25.
2020 | Conference Paper | LibreCat-ID: 16487 |
Privacy-Preserving Incentive Systems with Highly Efficient Point-Collection
J. Bobolz, F. Eidens, S. Krenn, D. Slamanig, C. Striecks, in: Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20), ACM, New York, NY, USA, 2020.
LibreCat
| Files available
| DOI
| Download (ext.)
J. Bobolz, F. Eidens, S. Krenn, D. Slamanig, C. Striecks, in: Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20), ACM, New York, NY, USA, 2020.
2020 | Journal Article | LibreCat-ID: 10790
How well do SEM algorithms imitate EM algorithms? A non-asymptotic analysis for mixture models
J. Blömer, S. Brauer, K. Bujna, D. Kuntze, Advances in Data Analysis and Classification 14 (2020) 147–173.
LibreCat
| DOI
J. Blömer, S. Brauer, K. Bujna, D. Kuntze, Advances in Data Analysis and Classification 14 (2020) 147–173.
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.
LibreCat
| DOI
N. Löken, Cryptography for the Crowd — A Study of Cryptographic Schemes with Applications to Crowd Work, 2020.
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.
LibreCat
| DOI
S. Brauer, Theoretical Computer Science 754 (2019) 88–106.
2019 | Conference Paper | LibreCat-ID: 13554 |
Personal Cross-Platform Reputation
J. Blömer, N. Löken, in: Security and Trust Management, STM 2019, 2019.
LibreCat
| Files available
| DOI
J. Blömer, N. Löken, in: Security and Trust Management, STM 2019, 2019.
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.
LibreCat
| Download (ext.)
J. Blömer, N. Löken, in: 12th International Symposium on Foundations and Practice of Security, FPS 2019, Springer, 2019.
2019 | Dissertation | LibreCat-ID: 13679
Classification and Approximation of Geometric Location Problems
S. Brauer, Classification and Approximation of Geometric Location Problems, Paderborn, 2019.
LibreCat
| DOI
S. Brauer, Classification and Approximation of Geometric Location Problems, Paderborn, 2019.
2019 | Conference Paper | LibreCat-ID: 13904 |
Updatable Anonymous Credentials and Applications to Incentive Systems
J. Blömer, J. Bobolz, D.P. Diemert, F. Eidens, in: Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19, 2019.
LibreCat
| Files available
| DOI
| Download (ext.)
J. Blömer, J. Bobolz, D.P. Diemert, F. Eidens, in: Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19, 2019.
2018 | Conference Paper | LibreCat-ID: 2862 |
Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems
J. Blömer, F. Eidens, J. Juhnke, in: Topics in Cryptology - {CT-RSA} 2018 - The Cryptographers’ Track at the {RSA} Conference 2018, Proceedings, Springer International Publishing, Cham, 2018, pp. 470–490.
LibreCat
| Files available
| DOI
| Download (ext.)
J. Blömer, F. Eidens, J. Juhnke, in: Topics in Cryptology - {CT-RSA} 2018 - The Cryptographers’ Track at the {RSA} Conference 2018, Proceedings, Springer International Publishing, Cham, 2018, pp. 470–490.
2018 | Journal Article | LibreCat-ID: 2685
Voronoi Cells of Lattices with Respect to Arbitrary Norms
J. Blömer, K. Kohn, SIAM Journal on Applied Algebra and Geometry. 2 (2018) 314–338.
LibreCat
| Files available
| DOI
J. Blömer, K. Kohn, SIAM Journal on Applied Algebra and Geometry. 2 (2018) 314–338.
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.
LibreCat
| Files available
| DOI
| Download (ext.)
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.
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.
LibreCat
| Files available
| DOI
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.
2018 | Working Paper | LibreCat-ID: 5820
Provably Anonymous Communication Based on Trusted Execution Environments
J. Blömer, J. Bobolz, C. Scheideler, A. Setzer, Provably Anonymous Communication Based on Trusted Execution Environments, n.d.
LibreCat
| Files available
J. Blömer, J. Bobolz, C. Scheideler, A. Setzer, Provably Anonymous Communication Based on Trusted Execution Environments, n.d.
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.
LibreCat
| 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.
2018 | Dissertation | LibreCat-ID: 6597
Models and Constructions for Secure Reputation Systems
J. Juhnke, Models and Constructions for Secure Reputation Systems, Universität Paderborn, 2018.
LibreCat
| DOI
J. Juhnke, Models and Constructions for Secure Reputation Systems, Universität Paderborn, 2018.
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.
LibreCat
| Files available
| DOI
| Download (ext.)
J. Blömer, F. Eidens, J. Juhnke, in: The International Conference on Cryptology And Network Security (CANS), Springer, 2018, pp. 235–255.
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.
LibreCat
| Files available
| DOI
| Download (ext.)
J. Blömer, J. Bobolz, in: ACNS 2018 Applied Cryptography & Network Security, n.d.
2017 | Dissertation | LibreCat-ID: 2908
Soft Clustering Algorithms - Theoretical and Practical Improvements
K. Bujna, Soft Clustering Algorithms - Theoretical and Practical Improvements, Universität Paderborn, 2017.
LibreCat
| DOI
| Download (ext.)
K. Bujna, Soft Clustering Algorithms - Theoretical and Practical Improvements, Universität Paderborn, 2017.
2017 | Conference Paper | LibreCat-ID: 2967 |
Subtleties in Security Definitions for Predicate Encryption with Public Index
J. Blömer, G. Liske, in: Proceedings of the International Conference of Mathematical Aspects of Computer and Information Sciences (MACIS), Springer International Publishing, Cham, 2017, pp. 438–453.
LibreCat
| Files available
| DOI
| Download (ext.)
J. Blömer, G. Liske, in: Proceedings of the International Conference of Mathematical Aspects of Computer and Information Sciences (MACIS), Springer International Publishing, Cham, 2017, pp. 438–453.
2017 | Dissertation | LibreCat-ID: 116
CCA-Security for Predicate Encryption Schemes
G. Liske, CCA-Security for Predicate Encryption Schemes, Universität Paderborn, 2017.
LibreCat
| DOI
| Download (ext.)
G. Liske, CCA-Security for Predicate Encryption Schemes, Universität Paderborn, 2017.
2017 | Conference Paper | LibreCat-ID: 2343 |
Searchable Encryption with Access Control
N. Löken, in: Proceedings of the 12th International Conference on Availability, Reliability and Security - ARES ’17, ACM Press, 2017.
LibreCat
| Files available
| DOI
| Download (ext.)
N. Löken, in: Proceedings of the 12th International Conference on Availability, Reliability and Security - ARES ’17, ACM Press, 2017.
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.
LibreCat
| Files available
| DOI
J. Blömer, P. Günther, V. Krummel, N. Löken, in: Foundations and Practice of Security, Springer International Publishing, Cham, 2017, pp. 3–17.
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.
LibreCat
| DOI
S. Brauer, in: D. Fotakis, A. Pagourtzis, V.T. Paschos (Eds.), Lecture Notes in Computer Science, Springer International Publishing, Cham, 2017, pp. 116–127.
2016 | Conference Paper | LibreCat-ID: 2947
Singular Curve Point Decompression Attack
J. Blömer, P. Günther, in: 2015 Workshop on Fault Diagnosis and Tolerance in Cryptography (FDTC), IEEE, 2016.
LibreCat
| DOI
J. Blömer, P. Günther, in: 2015 Workshop on Fault Diagnosis and Tolerance in Cryptography (FDTC), IEEE, 2016.
2016 | Book Chapter | LibreCat-ID: 2948
Implementing Cryptographic Pairings on Accumulator Based Smart Card Architectures
P. Günther, V. Krummel, in: Mathematical Aspects of Computer and Information Sciences, Springer International Publishing, Cham, 2016, pp. 151–165.
LibreCat
| DOI
P. Günther, V. Krummel, in: Mathematical Aspects of Computer and Information Sciences, Springer International Publishing, Cham, 2016, pp. 151–165.
2016 | Book Chapter | LibreCat-ID: 2968
Theoretical Analysis of the k-Means Algorithm – A Survey
J. Blömer, C. Lammersen, M. Schmidt, C. Sohler, in: Algorithm Engineering, Springer International Publishing, Cham, 2016, pp. 81–116.
LibreCat
| DOI
J. Blömer, C. Lammersen, M. Schmidt, C. Sohler, in: Algorithm Engineering, Springer International Publishing, Cham, 2016, pp. 81–116.
2016 | Preprint | LibreCat-ID: 2969 |
Hard-Clustering with Gaussian Mixture Models
J. Blömer, S. Brauer, K. Bujna, (2016).
LibreCat
| Download (ext.)
J. Blömer, S. Brauer, K. Bujna, (2016).
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.
LibreCat
| DOI
J. Blömer, K. Bujna, in: Advances in Knowledge Discovery and Data Mining, Springer International Publishing, Cham, 2016, pp. 296–308.
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.
LibreCat
J. Blömer, P. Günther, Effizienz Und Sicherheit Paarungsbasierter Kryptographie, Tagungsband des 26. Fraunhofer SIT Smartcard-Workshops, 2016.
2016 | Conference Paper | LibreCat-ID: 2367
A Theoretical Analysis of the Fuzzy K-Means Problem
J. Blömer, S. Brauer, K. Bujna, in: 2016 IEEE 16th International Conference on Data Mining (ICDM), IEEE, 2016, pp. 805–810.
LibreCat
| DOI
J. Blömer, S. Brauer, K. Bujna, in: 2016 IEEE 16th International Conference on Data Mining (ICDM), IEEE, 2016, pp. 805–810.
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.
LibreCat
| Files available
| DOI
J. Blömer, G. Liske, in: Proceedings of the CT-RSA 2016, 2016, pp. 431–447.
2016 | Dissertation | LibreCat-ID: 167
Physical attacks on pairing-based cryptography
P. Günther, Physical Attacks on Pairing-Based Cryptography, Universität Paderborn, 2016.
LibreCat
| Files available
| Download (ext.)
P. Günther, Physical Attacks on Pairing-Based Cryptography, Universität Paderborn, 2016.
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.
LibreCat
| DOI
J. Blömer, K. Bujna, in: Advances in Knowledge Discovery and Data Mining, Springer International Publishing, Cham, 2016, pp. 296–308.
2015 | Conference Paper | LibreCat-ID: 253
Short Group Signatures with Distributed Traceability
J. Blömer, J. Juhnke, N. Löken, in: Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS), 2015, pp. 166–180.
LibreCat
| Files available
| DOI
J. Blömer, J. Juhnke, N. Löken, in: Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS), 2015, pp. 166–180.
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.
LibreCat
| Files available
| DOI
| Download (ext.)
J. Blömer, J. Juhnke, C. Kolb, in: Proceedings of the 18th International Conference on Financial Cryptography and Data Security (FC), 2015, pp. 478--488.
2015 | Report | LibreCat-ID: 233 |
Voronoi Cells of Lattices with Respect to Arbitrary Norms
J. Blömer, K. Kohn, Voronoi Cells of Lattices with Respect to Arbitrary Norms, Universität Paderborn, 2015.
LibreCat
| Files available
| Download (ext.)
J. Blömer, K. Kohn, Voronoi Cells of Lattices with Respect to Arbitrary Norms, Universität Paderborn, 2015.
2014 | Conference Paper | LibreCat-ID: 355
Tampering attacks in pairing-based cryptography
J. Blömer, P. Günther, G. Liske, in: Proceedings of Fault Tolerance and Diagnosis in Cryptography(FDTC), 2014, pp. 1--7.
LibreCat
| Files available
| DOI
J. Blömer, P. Günther, G. Liske, in: Proceedings of Fault Tolerance and Diagnosis in Cryptography(FDTC), 2014, pp. 1--7.
2014 | Journal Article | LibreCat-ID: 2976
Analysis of Agglomerative Clustering
M.R. Ackermann, J. Blömer, D. Kuntze, C. Sohler, Algorithmica 69 (2014).
LibreCat
| DOI
M.R. Ackermann, J. Blömer, D. Kuntze, C. Sohler, Algorithmica 69 (2014).
2014 | Conference Paper | LibreCat-ID: 2977
A Theoretical and Experimental Comparison of the EM and SEM Algorithm
J. Blömer, K. Bujna, D. Kuntze, in: 2014 22nd International Conference on Pattern Recognition, IEEE, 2014.
LibreCat
| DOI
J. Blömer, K. Bujna, D. Kuntze, in: 2014 22nd International Conference on Pattern Recognition, IEEE, 2014.
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).
LibreCat
| Files available
| Download (ext.)
J. Blömer, G. Liske, (2014).
2014 | Conference Paper | LibreCat-ID: 463
A Practical Second-Order Fault Attack against a Real-World Pairing Implementation
J. Blömer, R. Gomes da Silva, P. Günther, J. Krämer, J.-P. Seifert, in: Proceedings of Fault Tolerance and Diagnosis in Cryptography(FDTC), 2014, pp. 123--136.
LibreCat
| Files available
| DOI
J. Blömer, R. Gomes da Silva, P. Günther, J. Krämer, J.-P. Seifert, in: Proceedings of Fault Tolerance and Diagnosis in Cryptography(FDTC), 2014, pp. 123--136.
2013 | Dissertation | LibreCat-ID: 2909
Practical algorithms for clustering and modeling large data sets - Analysis and improvements
D. Kuntze, Practical Algorithms for Clustering and Modeling Large Data Sets - Analysis and Improvements, Universität Paderborn, 2013.
LibreCat
| Download (ext.)
D. Kuntze, Practical Algorithms for Clustering and Modeling Large Data Sets - Analysis and Improvements, Universität Paderborn, 2013.
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.
LibreCat
J. Juhnke, H. Lefmann, V. Strehl, An Approach for Determining Optimal Contrast in Visual Cryptography, Fortschritt-Berichte VDI, 2013.
Filters and Search Terms
(department=64) AND (type=book OR type=book_editor OR type=book_chapter OR type=publicationtype_review OR type=conference_abstract OR type=conference_editor OR type=conference OR type=dissertation OR type=encyclopedia_article OR type=journal_article OR type=journal_editor OR type=newspaper_article OR type=patent OR type=preprint OR type=report OR type=translation OR type=translation_chapter OR type=working_paper OR type=research_data)