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: /record/44855

On the impossibility of surviving (iterated) deletion of weakly dominated strategies in rational MPC
J. Blömer, J. Bobolz, H. Bröcher, in: 2023.
LibreCat: /record/35014

A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices
J. Blömer, J. Bobolz, L.A. Porzenheim, in: 2023.
LibreCat: /record/43458

Privacy-Preserving Cryptography: Attribute-Based Signatures and Updatable Credentials
F. Eidens, Privacy-Preserving Cryptography: Attribute-Based Signatures and Updatable Credentials, 2022.
LibreCat: /record/35188
DOI: 10.17619/UNIPB/1-1653

Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes
J. Bobolz, F. Eidens, R. Heitjohann, J. Fell, (2021).
LibreCat: /record/26645

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: /record/29566
DOI: 10.1007/978-3-030-92548-2_9

A Complexity Theoretical Study of Fuzzy K-Means
J. Blömer, S. Brauer, K. Bujna, ACM Transactions on Algorithms 16 (2020) 1–25.
LibreCat: /record/20888
DOI: 10.1145/3409385

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: /record/16487
DOI: 10.1145/3320269.3384769

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: /record/10790
DOI: 10.1007/s11634-019-00366-7

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: /record/15482
DOI: 10.17619/UNIPB/1-854

Complexity of single-swap heuristics for metric facility location and related problems
S. Brauer, Theoretical Computer Science 754 (2019) 88–106.
LibreCat: /record/2916
DOI: 10.1016/j.tcs.2018.04.048

Personal Cross-Platform Reputation
J. Blömer, N. Löken, in: Security and Trust Management, STM 2019, 2019.
LibreCat: /record/13554
DOI: 10.1007/978-3-030-31511-5_9

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: /record/13557

Classification and Approximation of Geometric Location Problems
S. Brauer, Classification and Approximation of Geometric Location Problems, Paderborn, 2019.
LibreCat: /record/13679
DOI: 10.17619/UNIPB/1-816

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: /record/13904
DOI: 10.1145/3319535.3354223

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: /record/2862
DOI: 10.1007/978-3-319-76953-0_25

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: /record/2685
DOI: 10.1137/17M1132045

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: /record/3265
DOI: 10.1145/3230833.3234517

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: /record/2965
DOI: 10.1145/3230833.3230853

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: /record/5820

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: /record/4344
DOI: 10.4230/LIPIcs.ISAAC.2018.46

Models and Constructions for Secure Reputation Systems
J. Juhnke, Models and Constructions for Secure Reputation Systems, Universität Paderborn, 2018.
LibreCat: /record/6597
DOI: 10.17619/UNIPB/1-570

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: /record/3873
DOI: 10.1007/978-3-030-00434-7_12

Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures
J. Blömer, J. Bobolz, in: ACNS 2018 Applied Cryptography &; Network Security, n.d.
LibreCat: /record/2379
DOI: 10.1007/978-3-319-93387-0_12

Soft Clustering Algorithms - Theoretical and Practical Improvements
K. Bujna, Soft Clustering Algorithms - Theoretical and Practical Improvements, Universität Paderborn, 2017.
LibreCat: /record/2908
DOI: 10.17619/UNIPB/1-226

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: /record/2967
DOI: 10.1007/978-3-319-72453-9_35

CCA-Security for Predicate Encryption Schemes
G. Liske, CCA-Security for Predicate Encryption Schemes, Universität Paderborn, 2017.
LibreCat: /record/116
DOI: 10.17619/UNIPB/1-220

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: /record/2343
DOI: 10.1145/3098954.3098987

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: /record/2344
DOI: 10.1007/978-3-319-75650-9_1

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: /record/2381
DOI: 10.1007/978-3-319-57586-5_11

Singular Curve Point Decompression Attack
J. Blömer, P. Günther, in: 2015 Workshop on Fault Diagnosis and Tolerance in Cryptography (FDTC), IEEE, 2016.
LibreCat: /record/2947
DOI: 10.1109/fdtc.2015.17

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: /record/2948
DOI: 10.1007/978-3-319-32859-1_13

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: /record/2968
DOI: 10.1007/978-3-319-49487-6_3

Hard-Clustering with Gaussian Mixture Models
J. Blömer, S. Brauer, K. Bujna, (2016).
LibreCat: /record/2969

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: /record/2970
DOI: 10.1007/978-3-319-31750-2_24

Effizienz und Sicherheit paarungsbasierter Kryptographie
J. Blömer, P. Günther, Effizienz Und Sicherheit Paarungsbasierter Kryptographie, Tagungsband des 26. Fraunhofer SIT Smartcard-Workshops, 2016.
LibreCat: /record/2971

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: /record/2367
DOI: 10.1109/icdm.2016.0094

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: /record/208
DOI: 10.1007/978-3-319-29485-8_25

Physical attacks on pairing-based cryptography
P. Günther, Physical Attacks on Pairing-Based Cryptography, Universität Paderborn, 2016.
LibreCat: /record/167

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: /record/2978
DOI: 10.1007/978-3-319-31750-2_24

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: /record/253
DOI: 10.1007/978-3-319-32859-1_14

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: /record/322
DOI: 10.1007/978-3-662-47854-7_29

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: /record/233

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: /record/355
DOI: 10.1109/FDTC.2014.10

Analysis of Agglomerative Clustering
M.R. Ackermann, J. Blömer, D. Kuntze, C. Sohler, Algorithmica 69 (2014).
LibreCat: /record/2976
DOI: 10.1007/s00453-012-9717-4

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: /record/2977
DOI: 10.1109/icpr.2014.253

Constructing CCA-secure predicate encapsulation schemes from CPA-secure schemes and universal one-way hash functions
J. Blömer, G. Liske, (2014).
LibreCat: /record/442

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: /record/463
DOI: 10.1109/FDTC.2014.22

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: /record/2909

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: /record/2917