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229 Publications


2023 | Mastersthesis | LibreCat-ID: 40440
M. Pilot, Updatable Privacy-Preserving Reputation System based on Blockchain. 2023.
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2023 | Mastersthesis | LibreCat-ID: 43374 | OA
P. Schürmann, A Formal Comparison of Advanced Digital Signature Primitives. 2023.
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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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2023 | Bachelorsthesis | LibreCat-ID: 43375 | OA
A. Koch, Privacy-Preserving Collection and Evaluation of Log Files. 2023.
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2023 | Conference Paper | LibreCat-ID: 35014 | OA
J. Blömer, J. Bobolz, and H. Bröcher, “On the impossibility of surviving (iterated) deletion of weakly dominated strategies in rational MPC,” presented at the TCC 2023, Taipeh, Taiwan, 2023.
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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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2023 | Mastersthesis | LibreCat-ID: 47658
A. Anonymous, Private Set Intersection using Third Generation FHE. 2023.
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2023 | Mastersthesis | LibreCat-ID: 47659
A. Anonymous, Rational Models in Cryptography Applied to Matching. 2023.
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2022 | Bachelorsthesis | LibreCat-ID: 32399
E. Vahle, Modelling and Proving Security for a Secure MPC Protocol for Stable Matching. 2022.
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2022 | Bachelorsthesis | LibreCat-ID: 32398
H. Siek, Bringing Structure to Structure-Preserving Signatures: Overview, Implementation and Comparison of Selected SPS Schemes. 2022.
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2022 | Mastersthesis | LibreCat-ID: 31485
P. Kramer, On Transforming Lattice-Based Cryptography to the Ring Setting. 2022.
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2022 | Bachelorsthesis | LibreCat-ID: 34962
A. Anonymous, Evaluating database systems relying on secure multiparty computation. 2022.
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2022 | Mastersthesis | LibreCat-ID: 34963
A. Anonymous, Cost of Privacy-preserving SMPC Protocols for NN-Based Inference. 2022.
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2022 | Bachelorsthesis | LibreCat-ID: 35772
J. Lohse, Lattice Revocation Mechanisms. 2022.
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2022 | Dissertation | LibreCat-ID: 35188
F. Eidens, Privacy-Preserving Cryptography: Attribute-Based Signatures and Updatable Credentials. 2022.
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2022 | Mastersthesis | LibreCat-ID: 45255
A. Anonymous, Comparison of Open Source Software in Quantum Computing from the Perspective of Software Development. 2022.
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2022 | Mastersthesis | LibreCat-ID: 45256
A. Anonymous, A Detailed Survey and Comparison of the Selected Homomorphic Encryption Libraries. 2022.
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2022 | Bachelorsthesis | LibreCat-ID: 45257
M. Beckmann, Analysis of an Interactive Lattice Based Aggregated Signature Scheme. 2022.
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2021 | Preprint | LibreCat-ID: 26645 | OA
J. Bobolz, F. Eidens, R. Heitjohann, and J. Fell, “Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes.” IACR eprint, 2021.
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2021 | Conference Paper | LibreCat-ID: 29566
J. Bobolz, F. Eidens, S. Krenn, S. Ramacher, and K. Samelin, “Issuer-Hiding Attribute-Based Credentials,” 2021, doi: 10.1007/978-3-030-92548-2_9.
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2021 | Bachelorsthesis | LibreCat-ID: 32401
J. N. Siemer, Lattice reductions and their applications to cryptographic systems. 2021.
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2021 | Mastersthesis | LibreCat-ID: 32400
A. Anonymous, Performance Analysis of FHE Libraries. 2021.
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2021 | Bachelorsthesis | LibreCat-ID: 32402
M. A. E. Böttger, IND-CCA Secure PKE Schemes - Based on Lattices. 2021.
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2021 | Mastersthesis | LibreCat-ID: 45254
A. Anonymous, Device-Independent Security Proofs Via Entropy Accumulation. 2021.
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2020 | Bachelorsthesis | LibreCat-ID: 21117
P. Manegold, On Batch Proofs of Partial Knowledge. 2020.
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2020 | Bachelorsthesis | LibreCat-ID: 21118
A. Anonymous, Measuring the Performance of SNARK Libraries. 2020.
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2020 | Bachelorsthesis | LibreCat-ID: 21119
M. Westerwelle, Trapdoors and Sampling Procedures for Lattice-Based Cryptographic Constructions. 2020.
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2020 | Bachelorsthesis | LibreCat-ID: 21121
A. Anonymous, Benchmarking the Efficiency of Secure Multiparty Computation for Real World Problems. 2020.
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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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2020 | Bachelorsthesis | LibreCat-ID: 18085
J. Heimann, Distributed Key Generation for Attribute-Based Signatures. 2020.
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2020 | Bachelorsthesis | LibreCat-ID: 18637 | OA
P. Schürmann, A Group Signature Scheme from Flexible Public Key Signatures and Structure-Preserving Signatures on Equivalence Classes. Universität Paderborn, 2020.
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2020 | Bachelorsthesis | LibreCat-ID: 18639
T. Terfort, Enhancing Security by Usage of Universal One-Way Hash Functions. Universität Paderborn, 2020.
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2020 | Conference Paper | LibreCat-ID: 16487 | OA
J. Bobolz, F. Eidens, S. Krenn, D. Slamanig, and C. Striecks, “Privacy-Preserving Incentive Systems with Highly Efficient Point-Collection,” in Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20), Taiwan, 2020.
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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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2020 | Dissertation | LibreCat-ID: 15482
N. Löken, Cryptography for the Crowd — A Study of Cryptographic Schemes with Applications to Crowd Work. 2020.
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2020 | Bachelorsthesis | LibreCat-ID: 18638
P. Kramer, Comparison of Zero-Knowledge Range Proofs. Universität Paderborn, 2020.
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2019 | Journal Article | LibreCat-ID: 2916
S. Brauer, “Complexity of single-swap heuristics for metric facility location and related problems,” Theoretical Computer Science, vol. 754, pp. 88–106, 2019.
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2019 | Mastersthesis | LibreCat-ID: 15746
O. Otte, Outsourced Decryption of Attribute-based Ciphertexts. 2019.
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2019 | Bachelorsthesis | LibreCat-ID: 15747
N. C. Wördenweber, On the Security of the Rouselakis-Waters Ciphertext-Policy Attribute-Based Encryption Scheme in the Random Oracle Model. 2019.
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2019 | Bachelorsthesis | LibreCat-ID: 15819
M. Leutnant, Experimentelle Untersuchung des SEM-Algorithmus. 2019.
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2019 | Mastersthesis | LibreCat-ID: 13128 | OA
H. Bröcher, Rational Secure Multiparty Computation. Universität Paderborn, 2019.
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2019 | Mastersthesis | LibreCat-ID: 10306 | OA
L. A. Porzenheim, Post-Quantum Secure Group Signatures. 2019.
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2019 | Conference Paper | LibreCat-ID: 13554 | OA
J. Blömer and N. Löken, “Personal Cross-Platform Reputation,” in Security and Trust Management, STM 2019, 2019, vol. 11738.
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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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2019 | Bachelorsthesis | LibreCat-ID: 13592
M. Pilot, Efficient Finite-Field Arithmetic for Elliptic Curve Cryptography in Java. Universität Paderborn, 2019.
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2019 | Mastersthesis | LibreCat-ID: 13648 | OA
S. Scholz, Implementation and Comparison of Elliptic Curve Algorithms in Java. Universität Paderborn, 2019.
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2019 | Dissertation | LibreCat-ID: 13679
S. Brauer, Classification and Approximation of Geometric Location Problems. Paderborn, 2019.
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2019 | Conference Paper | LibreCat-ID: 13904 | OA
J. Blömer, J. Bobolz, D. P. Diemert, and F. Eidens, “Updatable Anonymous Credentials and Applications to Incentive Systems,” presented at the 26th ACM Conference on Computer and Communications Security, London, 2019, doi: 10.1145/3319535.3354223.
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2018 | Conference Paper | LibreCat-ID: 2862 | OA
J. Blömer, F. Eidens, and J. Juhnke, “Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems,” in Topics in Cryptology - {CT-RSA} 2018 - The Cryptographers’ Track at the {RSA} Conference 2018, Proceedings, San Francisco, CA, USA, 2018, pp. 470–490.
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2018 | Journal Article | LibreCat-ID: 2685
J. Blömer and K. Kohn, “Voronoi Cells of Lattices with Respect to Arbitrary Norms,” SIAM Journal on Applied Algebra and Geometry., vol. 2, no. 2, pp. 314–338, 2018.
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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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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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2018 | Working Paper | LibreCat-ID: 5820
J. Blömer, J. Bobolz, C. Scheideler, and A. Setzer, Provably Anonymous Communication Based on Trusted Execution Environments. .
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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 | Bachelorsthesis | LibreCat-ID: 5426
O. von Heißen, Implementierung und Analyse von Searchable Encryption. 2018.
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2018 | Dissertation | LibreCat-ID: 6597
J. Juhnke, Models and Constructions for Secure Reputation Systems. Universität Paderborn, 2018.
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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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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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2017 | Dissertation | LibreCat-ID: 2908
K. Bujna, Soft Clustering Algorithms - Theoretical and Practical Improvements. Universität Paderborn, 2017.
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2017 | Conference Paper | LibreCat-ID: 2967 | OA
J. Blömer and G. Liske, “Subtleties in Security Definitions for Predicate Encryption with Public Index,” in Proceedings of the International Conference of Mathematical Aspects of Computer and Information Sciences (MACIS), 2017, vol. 10693, pp. 438–453.
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2017 | Dissertation | LibreCat-ID: 116
G. Liske, CCA-Security for Predicate Encryption Schemes. Universität Paderborn, 2017.
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2017 | Conference Paper | LibreCat-ID: 2343 | OA
N. Löken, “Searchable Encryption with Access Control,” in Proceedings of the 12th International Conference on Availability, Reliability and Security  - ARES ’17, 2017.
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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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2017 | Book Chapter | LibreCat-ID: 2381
S. Brauer, “Complexity of Single-Swap Heuristics for Metric Facility Location and Related Problems,” in Lecture Notes in Computer Science, vol. 10236, D. Fotakis, A. Pagourtzis, and V. T. Paschos, Eds. Cham: Springer International Publishing, 2017, pp. 116–127.
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2017 | Mastersthesis | LibreCat-ID: 60
D. Niehus, Semantically Secure Attribute-based Searchable Encryption. Universität Paderborn, 2017.
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2017 | Bachelorsthesis | LibreCat-ID: 88
A. Ganesh Athreya, Instantiating a Predicate Encryption Scheme via Pair Encodings. Universität Paderborn, 2017.
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2017 | Bachelorsthesis | LibreCat-ID: 67
M. Jürgens, Provably Secure Key-Derivation-Functions for Certain Types of Applications. Universität Paderborn, 2017.
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2017 | Bachelorsthesis | LibreCat-ID: 104
D. Diemert, EAX - An Authenticated Encryption Mode for Block Ciphers. Universität Paderborn, 2017.
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2017 | Mastersthesis | LibreCat-ID: 117
P. Bemmann, Attribute-based Signatures using Structure Preserving Signatures. Universität Paderborn, 2017.
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2016 | Mastersthesis | LibreCat-ID: 2898
E. Weis, Searchable Encryption. 2016.
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2016 | Conference Paper | LibreCat-ID: 2947
J. Blömer and P. Günther, “Singular Curve Point Decompression Attack,” in 2015 Workshop on Fault Diagnosis and Tolerance in Cryptography (FDTC), 2016.
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2016 | Book Chapter | LibreCat-ID: 2948
P. Günther and V. Krummel, “Implementing Cryptographic Pairings on Accumulator Based Smart Card Architectures,” in Mathematical Aspects of Computer and Information Sciences, Cham: Springer International Publishing, 2016, pp. 151–165.
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2016 | Book Chapter | LibreCat-ID: 2968
J. Blömer, C. Lammersen, M. Schmidt, and C. Sohler, “Theoretical Analysis of the k-Means Algorithm – A Survey,” in Algorithm Engineering, Cham: Springer International Publishing, 2016, pp. 81–116.
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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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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 | 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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2016 | Bachelorsthesis | LibreCat-ID: 213
L. Porzenheim, Comparison of different Definitions of Chosen-Ciphertext Security in Encryption schemes. Universität Paderborn, 2016.
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2016 | Bachelorsthesis | LibreCat-ID: 214
K. S. Bemmann, Commitment Schemes - Definitions, Variants, and Security. Universität Paderborn, 2016.
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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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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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2016 | Dissertation | LibreCat-ID: 167
P. Günther, Physical attacks on pairing-based cryptography. Universität Paderborn, 2016.
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2016 | Mastersthesis | LibreCat-ID: 146
J. Hamm, Symmetric Anonymous Credentials with Protocols for Relations on Attributes. Universität Paderborn, 2016.
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2016 | Bachelorsthesis | LibreCat-ID: 152
F. Dallmeier, Short Randomizable Aggregatable Signatures: Constructions and Security Analysis. Universität Paderborn, 2016.
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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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2015 | Conference Paper | LibreCat-ID: 253
J. Blömer, J. Juhnke, and N. Löken, “Short Group Signatures with Distributed Traceability,” in Proceedings of the Sixth International Conference on Mathematical Aspects of Computer and Information Sciences (MACIS), 2015, pp. 166–180.
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2015 | Bachelorsthesis | LibreCat-ID: 286
B. Kalde, Implementierung eines hybriden Verschlüsselungsverfahrens nach Cramer und Shoup. Universität Paderborn, 2015.
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2015 | Bachelorsthesis | LibreCat-ID: 2865
D. Strotmann, Singulärwertzerlegung für μ-ähnliche Bregman-Divergenzen. 2015.
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2015 | Bachelorsthesis | LibreCat-ID: 261
T. Eisenhofer, Protokolle zur authentifizierten Schüsselvereinbarung. Universität Paderborn, 2015.
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2015 | Mastersthesis | LibreCat-ID: 321
F. Eidens, Anonymous credential system based on q-Strong Diffie-Hellman Assumption. Universität Paderborn, 2015.
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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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2015 | Mastersthesis | LibreCat-ID: 325
N. Löken, A Group Signature Scheme with Distributed Group Management - An Application of Threshold Encryption. Universität Paderborn, 2015.
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2015 | Bachelorsthesis | LibreCat-ID: 326
F. Heihoff, A group signature scheme based on the LSRW assumption. Universität Paderborn, 2015.
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2015 | Mastersthesis | LibreCat-ID: 297
M. Sosniak, Evaluation of Pairing Optimization for Embedded Platforms. Universität Paderborn, 2015.
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2015 | Mastersthesis | LibreCat-ID: 299
B. Gerken, Elektromagnetische Seitenkanalangriffe auf paarungsbasierte Kryptographie. Universität Paderborn, 2015.
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2015 | Mastersthesis | LibreCat-ID: 301 | OA
J. Bobolz, Efficient Verifier-Local Revocation for Anonymous Credentials. Universität Paderborn, 2015.
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2015 | Mastersthesis | LibreCat-ID: 302
C. Stroh, Efficient Attributes for Pairing-Based Anonymous Credentials. Universität Paderborn, 2015.
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2015 | Mastersthesis | LibreCat-ID: 312
P. Schleiter, Constructions of Fully Secure Predicate Encryption Schemes. Universität Paderborn, 2015.
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2015 | Mastersthesis | LibreCat-ID: 273
K. Kohn, Number of Voronoi-relevant vectors in lattices with respect to arbitrary norms. Universität Paderborn, 2015.
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2015 | Report | LibreCat-ID: 233 | OA
J. Blömer and K. Kohn, Voronoi Cells of Lattices with Respect to Arbitrary Norms. Universität Paderborn, 2015.
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2014 | Bachelorsthesis | LibreCat-ID: 2866
F. Biermeier, Untersuchung des Erreichbarkeitsproblems in ungerichteten Graphen bezüglich den Komplexitätsklassen L und SL. 2014.
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