--- _id: '13128' author: - first_name: Henrik full_name: Bröcher, Henrik id: '41047' last_name: Bröcher citation: ama: Bröcher H. Rational Secure Multiparty Computation. Universität Paderborn; 2019. apa: Bröcher, H. (2019). Rational Secure Multiparty Computation. Universität Paderborn. bibtex: '@book{Bröcher_2019, title={Rational Secure Multiparty Computation}, publisher={Universität Paderborn}, author={Bröcher, Henrik}, year={2019} }' chicago: Bröcher, Henrik. Rational Secure Multiparty Computation. Universität Paderborn, 2019. ieee: H. Bröcher, Rational Secure Multiparty Computation. Universität Paderborn, 2019. mla: Bröcher, Henrik. Rational Secure Multiparty Computation. Universität Paderborn, 2019. short: H. Bröcher, Rational Secure Multiparty Computation, Universität Paderborn, 2019. date_created: 2019-09-04T08:04:12Z date_updated: 2022-01-06T06:51:28Z ddc: - '000' department: - _id: '64' extern: '1' file: - access_level: open_access content_type: application/pdf creator: bhenrik date_created: 2019-09-04T07:59:31Z date_updated: 2020-10-30T15:59:34Z file_id: '13129' file_name: thesis_broecher.pdf file_size: 746819 relation: main_file file_date_updated: 2020-10-30T15:59:34Z has_accepted_license: '1' language: - iso: eng oa: '1' project: - _id: '13' name: SFB 901 - Subproject C1 - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C publisher: Universität Paderborn status: public supervisor: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer title: Rational Secure Multiparty Computation type: mastersthesis user_id: '25078' year: '2019' ... --- _id: '10306' author: - first_name: Laurens Alexander full_name: Porzenheim, Laurens Alexander id: '47434' last_name: Porzenheim citation: ama: Porzenheim LA. Post-Quantum Secure Group Signatures.; 2019. apa: Porzenheim, L. A. (2019). Post-Quantum Secure Group Signatures. bibtex: '@book{Porzenheim_2019, title={Post-Quantum Secure Group Signatures}, author={Porzenheim, Laurens Alexander}, year={2019} }' chicago: Porzenheim, Laurens Alexander. Post-Quantum Secure Group Signatures, 2019. ieee: L. A. Porzenheim, Post-Quantum Secure Group Signatures. 2019. mla: Porzenheim, Laurens Alexander. Post-Quantum Secure Group Signatures. 2019. short: L.A. Porzenheim, Post-Quantum Secure Group Signatures, 2019. date_created: 2019-06-26T09:12:47Z date_updated: 2022-01-06T06:50:36Z ddc: - '000' department: - _id: '64' file: - access_level: open_access content_type: application/pdf creator: laurensp date_created: 2019-06-26T09:08:23Z date_updated: 2019-06-26T09:19:15Z file_id: '10307' file_name: thesis_final.pdf file_size: 899233 relation: main_file file_date_updated: 2019-06-26T09:19:15Z has_accepted_license: '1' language: - iso: eng oa: '1' status: public supervisor: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer title: Post-Quantum Secure Group Signatures type: mastersthesis user_id: '47434' year: '2019' ... --- _id: '13554' abstract: - lang: eng text: We propose a novel personal reputation system for cross-platform reputation. We observe that, in certain usage scenarios, e.g. crowd work, the rater anonymity property typically imposed on reputation systems is not necessary. Instead, we propose a relaxed notion of rater anonymity that is more applicable in the crowd work scenario. This allows us to construct a secure personal reputation system from simple cryptographic primitives. author: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Nils full_name: Löken, Nils id: '13703' last_name: Löken citation: ama: 'Blömer J, Löken N. Personal Cross-Platform Reputation. In: Security and Trust Management, STM 2019. Vol 11738. LNCS. ; 2019. doi:10.1007/978-3-030-31511-5_9' apa: Blömer, J., & Löken, N. (2019). Personal Cross-Platform Reputation. In Security and Trust Management, STM 2019 (Vol. 11738). https://doi.org/10.1007/978-3-030-31511-5_9 bibtex: '@inproceedings{Blömer_Löken_2019, series={LNCS}, title={Personal Cross-Platform Reputation}, volume={11738}, DOI={10.1007/978-3-030-31511-5_9}, booktitle={Security and Trust Management, STM 2019}, author={Blömer, Johannes and Löken, Nils}, year={2019}, collection={LNCS} }' chicago: Blömer, Johannes, and Nils Löken. “Personal Cross-Platform Reputation.” In Security and Trust Management, STM 2019, Vol. 11738. LNCS, 2019. https://doi.org/10.1007/978-3-030-31511-5_9. ieee: J. Blömer and N. Löken, “Personal Cross-Platform Reputation,” in Security and Trust Management, STM 2019, 2019, vol. 11738. mla: Blömer, Johannes, and Nils Löken. “Personal Cross-Platform Reputation.” Security and Trust Management, STM 2019, vol. 11738, 2019, doi:10.1007/978-3-030-31511-5_9. short: 'J. Blömer, N. Löken, in: Security and Trust Management, STM 2019, 2019.' conference: name: Security and Trust Management, STM 2019 date_created: 2019-10-01T07:50:03Z date_updated: 2022-01-06T06:51:38Z ddc: - '000' department: - _id: '568' - _id: '64' doi: 10.1007/978-3-030-31511-5_9 file: - access_level: open_access content_type: application/pdf creator: nilo date_created: 2019-10-01T07:45:17Z date_updated: 2019-10-01T07:45:17Z description: This is an author's version of the paper presented at STM 2019. file_id: '13555' file_name: informal.pdf file_size: 507736 relation: main_file title: Personal cross-platform reputation, author's version file_date_updated: 2019-10-01T07:45:17Z has_accepted_license: '1' intvolume: ' 11738' language: - iso: eng oa: '1' publication: Security and Trust Management, STM 2019 series_title: LNCS status: public title: Personal Cross-Platform Reputation type: conference user_id: '13703' volume: 11738 year: '2019' ... --- _id: '13557' abstract: - lang: eng text: We present a searchable encryption scheme for dynamic document collections in a multi-user scenario. Our scheme features fine-grained access control to search results, as well as access control to operations such as adding documents to the document collection, or changing individual documents. The scheme features verifiability of search results. Our scheme also satisfies the forward privacy notion crucial for the security of dynamic searchable encryption schemes. author: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Nils full_name: Löken, Nils id: '13703' last_name: Löken citation: ama: 'Blömer J, Löken N. Dynamic Searchable Encryption with Access Control. In: 12th International Symposium on Foundations and Practice of Security, FPS 2019. Vol 12056. LNCS. Springer; 2019.' apa: Blömer, J., & Löken, N. (2019). Dynamic Searchable Encryption with Access Control. In 12th International Symposium on Foundations and Practice of Security, FPS 2019 (Vol. 12056). Springer. bibtex: '@inproceedings{Blömer_Löken_2019, series={LNCS}, title={Dynamic Searchable Encryption with Access Control}, volume={12056}, booktitle={12th International Symposium on Foundations and Practice of Security, FPS 2019}, publisher={Springer}, author={Blömer, Johannes and Löken, Nils}, year={2019}, collection={LNCS} }' chicago: Blömer, Johannes, and Nils Löken. “Dynamic Searchable Encryption with Access Control.” In 12th International Symposium on Foundations and Practice of Security, FPS 2019, Vol. 12056. LNCS. Springer, 2019. ieee: 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. mla: Blömer, Johannes, and Nils Löken. “Dynamic Searchable Encryption with Access Control.” 12th International Symposium on Foundations and Practice of Security, FPS 2019, vol. 12056, Springer, 2019. short: 'J. Blömer, N. Löken, in: 12th International Symposium on Foundations and Practice of Security, FPS 2019, Springer, 2019.' date_created: 2019-10-01T08:05:31Z date_updated: 2022-01-06T06:51:38Z department: - _id: '64' - _id: '568' intvolume: ' 12056' language: - iso: eng main_file_link: - open_access: '1' url: http://eprint.iacr.org/2019/1038 oa: '1' publication: 12th International Symposium on Foundations and Practice of Security, FPS 2019 publisher: Springer series_title: LNCS status: public title: Dynamic Searchable Encryption with Access Control type: conference user_id: '13703' volume: 12056 year: '2019' ... --- _id: '13592' author: - first_name: Matthias full_name: Pilot, Matthias last_name: Pilot citation: ama: Pilot M. Efficient Finite-Field Arithmetic for Elliptic Curve Cryptography in Java. Universität Paderborn; 2019. apa: Pilot, M. (2019). Efficient Finite-Field Arithmetic for Elliptic Curve Cryptography in Java. Universität Paderborn. bibtex: '@book{Pilot_2019, title={Efficient Finite-Field Arithmetic for Elliptic Curve Cryptography in Java}, publisher={Universität Paderborn}, author={Pilot, Matthias}, year={2019} }' chicago: Pilot, Matthias. Efficient Finite-Field Arithmetic for Elliptic Curve Cryptography in Java. Universität Paderborn, 2019. ieee: M. Pilot, Efficient Finite-Field Arithmetic for Elliptic Curve Cryptography in Java. Universität Paderborn, 2019. mla: Pilot, Matthias. Efficient Finite-Field Arithmetic for Elliptic Curve Cryptography in Java. Universität Paderborn, 2019. short: M. Pilot, Efficient Finite-Field Arithmetic for Elliptic Curve Cryptography in Java, Universität Paderborn, 2019. date_created: 2019-10-03T12:30:24Z date_updated: 2022-01-06T06:51:40Z department: - _id: '7' - _id: '64' extern: '1' language: - iso: eng project: - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '13' name: SFB 901 - Subproject C1 publisher: Universität Paderborn status: public supervisor: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer title: Efficient Finite-Field Arithmetic for Elliptic Curve Cryptography in Java type: bachelorsthesis user_id: '477' year: '2019' ... --- _id: '13648' author: - first_name: Swante full_name: Scholz, Swante last_name: Scholz citation: ama: Scholz S. Implementation and Comparison of Elliptic Curve Algorithms in Java. Universität Paderborn; 2019. apa: Scholz, S. (2019). Implementation and Comparison of Elliptic Curve Algorithms in Java. Universität Paderborn. bibtex: '@book{Scholz_2019, title={Implementation and Comparison of Elliptic Curve Algorithms in Java}, publisher={Universität Paderborn}, author={Scholz, Swante}, year={2019} }' chicago: Scholz, Swante. Implementation and Comparison of Elliptic Curve Algorithms in Java. Universität Paderborn, 2019. ieee: S. Scholz, Implementation and Comparison of Elliptic Curve Algorithms in Java. Universität Paderborn, 2019. mla: Scholz, Swante. Implementation and Comparison of Elliptic Curve Algorithms in Java. Universität Paderborn, 2019. short: S. Scholz, Implementation and Comparison of Elliptic Curve Algorithms in Java, Universität Paderborn, 2019. date_created: 2019-10-07T09:56:58Z date_updated: 2022-01-06T06:51:41Z ddc: - '000' department: - _id: '7' - _id: '64' extern: '1' file: - access_level: open_access content_type: application/pdf creator: jbobolz date_created: 2020-04-27T10:32:00Z date_updated: 2020-04-27T10:33:59Z file_id: '16871' file_name: sscholz-MA-thesis-final.pdf file_size: 1714805 relation: main_file file_date_updated: 2020-04-27T10:33:59Z has_accepted_license: '1' language: - iso: eng oa: '1' project: - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '13' name: SFB 901 - Subproject C1 publisher: Universität Paderborn status: public supervisor: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer title: Implementation and Comparison of Elliptic Curve Algorithms in Java type: mastersthesis user_id: '477' year: '2019' ... --- _id: '13679' author: - first_name: Sascha full_name: Brauer, Sascha id: '13291' last_name: Brauer citation: ama: Brauer S. Classification and Approximation of Geometric Location Problems. Paderborn; 2019. doi:10.17619/UNIPB/1-816 apa: Brauer, S. (2019). Classification and Approximation of Geometric Location Problems. Paderborn. https://doi.org/10.17619/UNIPB/1-816 bibtex: '@book{Brauer_2019, place={Paderborn}, title={Classification and Approximation of Geometric Location Problems}, DOI={10.17619/UNIPB/1-816}, author={Brauer, Sascha}, year={2019} }' chicago: Brauer, Sascha. Classification and Approximation of Geometric Location Problems. Paderborn, 2019. https://doi.org/10.17619/UNIPB/1-816. ieee: S. Brauer, Classification and Approximation of Geometric Location Problems. Paderborn, 2019. mla: Brauer, Sascha. Classification and Approximation of Geometric Location Problems. 2019, doi:10.17619/UNIPB/1-816. short: S. Brauer, Classification and Approximation of Geometric Location Problems, Paderborn, 2019. date_created: 2019-10-09T10:00:53Z date_updated: 2022-01-06T06:51:41Z department: - _id: '64' doi: 10.17619/UNIPB/1-816 language: - iso: eng place: Paderborn project: - _id: '45' name: Soft-Clustering - Von Heuristiken zu Approximationsalgorithmen status: public supervisor: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer title: Classification and Approximation of Geometric Location Problems type: dissertation user_id: '13291' year: '2019' ... --- _id: '13904' abstract: - lang: eng text: In this paper, we introduce updatable anonymous credential systems (UACS) and use them to construct a new privacy-preserving incentive system. In a UACS, a user holding a credential certifying some attributes can interact with the corresponding issuer to update his attributes. During this, the issuer knows which update function is run, but does not learn the user's previous attributes. Hence the update process preserves anonymity of the user. One example for a class of update functions are additive updates of integer attributes, where the issuer increments an unknown integer attribute value v by some known value k. This kind of update is motivated by an application of UACS to incentive systems. Users in an incentive system can anonymously accumulate points, e.g. in a shop at checkout, and spend them later, e.g. for a discount. author: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Jan full_name: Bobolz, Jan id: '27207' last_name: Bobolz - first_name: Denis Pascal full_name: Diemert, Denis Pascal id: '44071' last_name: Diemert - first_name: Fabian full_name: Eidens, Fabian id: '25078' last_name: Eidens citation: ama: 'Blömer J, Bobolz J, Diemert DP, Eidens F. Updatable Anonymous Credentials and Applications to Incentive Systems. In: Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19. Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19. ; 2019. doi:10.1145/3319535.3354223' apa: Blömer, J., Bobolz, J., Diemert, D. P., & Eidens, F. (2019). Updatable Anonymous Credentials and Applications to Incentive Systems. Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19. 26th ACM Conference on Computer and Communications Security, London. https://doi.org/10.1145/3319535.3354223 bibtex: '@inproceedings{Blömer_Bobolz_Diemert_Eidens_2019, series={Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19}, title={Updatable Anonymous Credentials and Applications to Incentive Systems}, DOI={10.1145/3319535.3354223}, booktitle={Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19}, author={Blömer, Johannes and Bobolz, Jan and Diemert, Denis Pascal and Eidens, Fabian}, year={2019}, collection={Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19} }' chicago: Blömer, Johannes, Jan Bobolz, Denis Pascal Diemert, and Fabian Eidens. “Updatable Anonymous Credentials and Applications to Incentive Systems.” In Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19. Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19, 2019. https://doi.org/10.1145/3319535.3354223. ieee: '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.' mla: Blömer, Johannes, et al. “Updatable Anonymous Credentials and Applications to Incentive Systems.” Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS ’19, 2019, doi:10.1145/3319535.3354223. short: '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.' conference: end_date: 2019-11-15 location: London name: 26th ACM Conference on Computer and Communications Security start_date: 2019-11-11 date_created: 2019-10-18T08:09:44Z date_updated: 2023-01-10T10:25:27Z ddc: - '006' department: - _id: '7' - _id: '64' doi: 10.1145/3319535.3354223 file: - access_level: closed content_type: application/pdf creator: jbobolz date_created: 2019-10-18T08:07:49Z date_updated: 2019-10-18T08:07:49Z file_id: '13907' file_name: full_eprinted_v2.pdf file_size: 838949 relation: main_file file_date_updated: 2019-10-18T08:07:49Z has_accepted_license: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://eprint.iacr.org/2019/169.pdf oa: '1' project: - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '13' name: SFB 901 - Subproject C1 publication: Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS '19 series_title: Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security - CCS '19 status: public title: Updatable Anonymous Credentials and Applications to Incentive Systems type: conference user_id: '25078' year: '2019' ... --- _id: '2862' author: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Fabian full_name: Eidens, Fabian id: '25078' last_name: Eidens - first_name: Jakob full_name: Juhnke, Jakob id: '48090' last_name: Juhnke citation: ama: 'Blömer J, Eidens F, Juhnke J. 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. Cham: Springer International Publishing; 2018:470-490. doi:10.1007/978-3-319-76953-0_25' apa: 'Blömer, J., Eidens, F., & Juhnke, J. (2018). 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 (pp. 470–490). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-319-76953-0_25' bibtex: '@inproceedings{Blömer_Eidens_Juhnke_2018, place={Cham}, title={Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems}, DOI={10.1007/978-3-319-76953-0_25}, booktitle={Topics in Cryptology - {CT-RSA} 2018 - The Cryptographers’ Track at the {RSA} Conference 2018, Proceedings}, publisher={Springer International Publishing}, author={Blömer, Johannes and Eidens, Fabian and Juhnke, Jakob}, year={2018}, pages={470–490} }' chicago: 'Blömer, Johannes, Fabian Eidens, and Jakob 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, 470–90. Cham: Springer International Publishing, 2018. https://doi.org/10.1007/978-3-319-76953-0_25.' ieee: 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. mla: Blömer, Johannes, et al. “Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems.” Topics in Cryptology - {CT-RSA} 2018 - The Cryptographers’ Track at the {RSA} Conference 2018, Proceedings, Springer International Publishing, 2018, pp. 470–90, doi:10.1007/978-3-319-76953-0_25. short: '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.' conference: end_date: 2018-04-20 location: San Francisco, CA, USA name: Topics in Cryptology - {CT-RSA} 2018 - The Cryptographers' Track at the {RSA} Conference 2018 start_date: 2018-04-16 date_created: 2018-05-24T11:14:02Z date_updated: 2022-01-06T06:58:12Z ddc: - '004' department: - _id: '7' - _id: '64' doi: 10.1007/978-3-319-76953-0_25 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T13:45:40Z date_updated: 2018-11-02T13:45:40Z file_id: '5253' file_name: PracticalAnonymousAndPubliclyL.pdf file_size: 3371773 relation: main_file success: 1 file_date_updated: 2018-11-02T13:45:40Z has_accepted_license: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://eprint.iacr.org/2018/029 oa: '1' page: 470-490 place: Cham project: - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '13' name: SFB 901 - Subproject C1 publication: Topics in Cryptology - {CT-RSA} 2018 - The Cryptographers' Track at the {RSA} Conference 2018, Proceedings publication_identifier: isbn: - '9783319769523' - '9783319769530' issn: - 0302-9743 - 1611-3349 publication_status: published publisher: Springer International Publishing status: public title: Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems type: conference user_id: '477' year: '2018' ... --- _id: '2685' author: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Kathlén full_name: Kohn, Kathlén last_name: Kohn citation: ama: Blömer J, Kohn K. Voronoi Cells of Lattices with Respect to Arbitrary Norms. SIAM Journal on Applied Algebra and Geometry. 2018;2(2):314-338. doi:10.1137/17M1132045 apa: Blömer, J., & Kohn, K. (2018). Voronoi Cells of Lattices with Respect to Arbitrary Norms. SIAM Journal on Applied Algebra and Geometry., 2(2), 314–338. https://doi.org/10.1137/17M1132045 bibtex: '@article{Blömer_Kohn_2018, title={Voronoi Cells of Lattices with Respect to Arbitrary Norms}, volume={2}, DOI={10.1137/17M1132045}, number={2}, journal={SIAM Journal on Applied Algebra and Geometry.}, author={Blömer, Johannes and Kohn, Kathlén}, year={2018}, pages={314–338} }' chicago: 'Blömer, Johannes, and Kathlén Kohn. “Voronoi Cells of Lattices with Respect to Arbitrary Norms.” SIAM Journal on Applied Algebra and Geometry. 2, no. 2 (2018): 314–38. https://doi.org/10.1137/17M1132045.' ieee: 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. mla: Blömer, Johannes, and Kathlén Kohn. “Voronoi Cells of Lattices with Respect to Arbitrary Norms.” SIAM Journal on Applied Algebra and Geometry., vol. 2, no. 2, 2018, pp. 314–38, doi:10.1137/17M1132045. short: J. Blömer, K. Kohn, SIAM Journal on Applied Algebra and Geometry. 2 (2018) 314–338. date_created: 2018-05-08T09:18:54Z date_updated: 2022-01-06T06:57:29Z ddc: - '000' department: - _id: '7' - _id: '64' doi: 10.1137/17M1132045 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T15:22:55Z date_updated: 2018-11-02T15:22:55Z file_id: '5300' file_name: 17m1132045.pdf file_size: 1131048 relation: main_file success: 1 file_date_updated: 2018-11-02T15:22:55Z has_accepted_license: '1' intvolume: ' 2' issue: '2' language: - iso: eng page: 314-338 project: - _id: '13' name: SFB 901 - Subproject C1 - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C publication: SIAM Journal on Applied Algebra and Geometry. publication_identifier: eissn: - 2470-6566 publication_status: epub_ahead status: public title: Voronoi Cells of Lattices with Respect to Arbitrary Norms type: journal_article user_id: '477' volume: 2 year: '2018' ... --- _id: '3265' abstract: - lang: eng text: "We present CLARC (Cryptographic Library for Anonymous Reputation and Credentials), an anonymous credentials system (ACS) combined with an anonymous reputation system.\r\n\r\nUsing CLARC, users can receive attribute-based credentials from issuers. They can efficiently prove that their credentials satisfy complex (access) policies in a privacy-preserving way. This implements anonymous access control with complex policies.\r\n\r\nFurthermore, CLARC is the first ACS that is combined with an anonymous reputation system where users can anonymously rate services. A user who gets access to a service via a credential, also anonymously receives a review token to rate the service. If a user creates more than a single rating, this can be detected by anyone, preventing users from spamming ratings to sway public opinion.\r\n\r\nTo evaluate feasibility of our construction, we present an open-source prototype implementation." author: - first_name: Kai full_name: Bemmann, Kai last_name: Bemmann - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Jan full_name: Bobolz, Jan id: '27207' last_name: Bobolz - first_name: Henrik full_name: Bröcher, Henrik id: '41047' last_name: Bröcher - first_name: Denis Pascal full_name: Diemert, Denis Pascal id: '44071' last_name: Diemert - first_name: Fabian full_name: Eidens, Fabian id: '25078' last_name: Eidens - first_name: Lukas full_name: Eilers, Lukas last_name: Eilers - first_name: Jan Frederik full_name: Haltermann, Jan Frederik id: '44413' last_name: Haltermann - first_name: Jakob full_name: Juhnke, Jakob id: '48090' last_name: Juhnke - first_name: Burhan full_name: Otour, Burhan last_name: Otour - first_name: Laurens Alexander full_name: Porzenheim, Laurens Alexander id: '47434' last_name: Porzenheim - first_name: Simon full_name: Pukrop, Simon last_name: Pukrop - first_name: Erik full_name: Schilling, Erik last_name: Schilling - first_name: Michael full_name: Schlichtig, Michael id: '32312' last_name: Schlichtig - first_name: Marcel full_name: Stienemeier, Marcel last_name: Stienemeier citation: ama: 'Bemmann K, Blömer J, Bobolz J, et al. Fully-Featured Anonymous Credentials with Reputation System. In: Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18. New York, NY, USA: ACM. doi:10.1145/3230833.3234517' apa: 'Bemmann, K., Blömer, J., Bobolz, J., Bröcher, H., Diemert, D. P., Eidens, F., … Stienemeier, M. (n.d.). Fully-Featured Anonymous Credentials with Reputation System. In Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18. New York, NY, USA: ACM. https://doi.org/10.1145/3230833.3234517' bibtex: '@inproceedings{Bemmann_Blömer_Bobolz_Bröcher_Diemert_Eidens_Eilers_Haltermann_Juhnke_Otour_et al., place={New York, NY, USA}, title={Fully-Featured Anonymous Credentials with Reputation System}, DOI={10.1145/3230833.3234517}, booktitle={Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18}, publisher={ACM}, author={Bemmann, Kai and Blömer, Johannes and Bobolz, Jan and Bröcher, Henrik and Diemert, Denis Pascal and Eidens, Fabian and Eilers, Lukas and Haltermann, Jan Frederik and Juhnke, Jakob and Otour, Burhan and et al.} }' chicago: 'Bemmann, Kai, Johannes Blömer, Jan Bobolz, Henrik Bröcher, Denis Pascal Diemert, Fabian Eidens, Lukas Eilers, et al. “Fully-Featured Anonymous Credentials with Reputation System.” In Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18. New York, NY, USA: ACM, n.d. https://doi.org/10.1145/3230833.3234517.' ieee: 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. mla: Bemmann, Kai, et al. “Fully-Featured Anonymous Credentials with Reputation System.” Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES ’18, ACM, doi:10.1145/3230833.3234517. short: '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.' conference: end_date: 2018-08-30 location: Hamburg, Germany name: ARES 2018 - SECPID start_date: 2018-08-27 date_created: 2018-06-14T11:19:29Z date_updated: 2022-01-06T06:59:07Z ddc: - '000' department: - _id: '64' doi: 10.1145/3230833.3234517 file: - access_level: closed content_type: application/pdf creator: feidens date_created: 2018-11-08T10:17:39Z date_updated: 2018-11-08T10:17:39Z file_id: '5428' file_name: react_acs.pdf file_size: 920843 relation: main_file file_date_updated: 2018-11-08T10:17:39Z has_accepted_license: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://eprint.iacr.org/2018/835 oa: '1' place: New York, NY, USA project: - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '13' name: SFB 901 - Subproject C1 - _id: '44' name: KogniHome - die mitdenkende Wohnung publication: Proceedings of the 13th International Conference on Availability, Reliability and Security - ARES '18 publication_identifier: isbn: - 978-1-4503-6448-5 publication_status: accepted publisher: ACM quality_controlled: '1' related_material: link: - relation: software url: https://github.com/upbcuk status: public title: Fully-Featured Anonymous Credentials with Reputation System type: conference user_id: '25078' year: '2018' ... --- _id: '2965' author: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Nils full_name: Löken, Nils id: '13703' last_name: Löken citation: ama: 'Blömer J, Löken N. Cloud Architectures for Searchable Encryption. In: Proceedings of the 13th International Conference on Availability, Reliability and Security, ARES 2018. New York, NY, USA: ACM; :25:1--25:10. doi:10.1145/3230833.3230853' apa: 'Blömer, J., & Löken, N. (n.d.). Cloud Architectures for Searchable Encryption. In Proceedings of the 13th International Conference on Availability, Reliability and Security, ARES 2018 (pp. 25:1--25:10). New York, NY, USA: ACM. https://doi.org/10.1145/3230833.3230853' bibtex: '@inproceedings{Blömer_Löken, place={New York, NY, USA}, title={Cloud Architectures for Searchable Encryption}, DOI={10.1145/3230833.3230853}, booktitle={Proceedings of the 13th International Conference on Availability, Reliability and Security, ARES 2018}, publisher={ACM}, author={Blömer, Johannes and Löken, Nils}, pages={25:1--25:10} }' chicago: 'Blömer, Johannes, and Nils Löken. “Cloud Architectures for Searchable Encryption.” In Proceedings of the 13th International Conference on Availability, Reliability and Security, ARES 2018, 25:1--25:10. New York, NY, USA: ACM, n.d. https://doi.org/10.1145/3230833.3230853.' ieee: 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. mla: Blömer, Johannes, and Nils Löken. “Cloud Architectures for Searchable Encryption.” Proceedings of the 13th International Conference on Availability, Reliability and Security, ARES 2018, ACM, pp. 25:1--25:10, doi:10.1145/3230833.3230853. short: '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.' conference: location: Hamburg, Germany name: ARES 2018 date_created: 2018-06-04T11:33:15Z date_updated: 2022-01-06T06:58:49Z ddc: - '000' department: - _id: '64' - _id: '568' doi: 10.1145/3230833.3230853 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T14:39:46Z date_updated: 2018-11-02T14:39:46Z file_id: '5278' file_name: a25-Blomer.pdf file_size: 769807 relation: main_file success: 1 file_date_updated: 2018-11-02T14:39:46Z has_accepted_license: '1' language: - iso: eng page: 25:1--25:10 place: New York, NY, USA project: - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '13' name: SFB 901 - Subproject C1 publication: Proceedings of the 13th International Conference on Availability, Reliability and Security, ARES 2018 publication_identifier: isbn: - 978-1-4503-6448-5 publication_status: accepted publisher: ACM quality_controlled: '1' status: public title: Cloud Architectures for Searchable Encryption type: conference user_id: '13703' year: '2018' ... --- _id: '5820' abstract: - lang: eng text: "In this paper, we investigate the use of trusted execution environments (TEEs, such as Intel's SGX) for an anonymous communication infrastructure over untrusted networks.\r\nFor this, we present the general idea of exploiting trusted execution environments for the purpose of anonymous communication, including a continuous-time security framework that models strong anonymity guarantees in the presence of an adversary that observes all network traffic and can adaptively corrupt a constant fraction of participating nodes.\r\nIn our framework, a participating node can generate a number of unlinkable pseudonyms. Messages are sent from and to pseudonyms, allowing both senders and receivers of messages to remain anonymous. We introduce a concrete construction, which shows viability of our TEE-based approach to anonymous communication. The construction draws from techniques from cryptography and overlay networks. \r\nOur techniques are very general and can be used as a basis for future constructions with similar goals." author: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Jan full_name: Bobolz, Jan id: '27207' last_name: Bobolz - first_name: Christian full_name: Scheideler, Christian id: '20792' last_name: Scheideler - first_name: Alexander full_name: Setzer, Alexander id: '11108' last_name: Setzer citation: ama: Blömer J, Bobolz J, Scheideler C, Setzer A. Provably Anonymous Communication Based on Trusted Execution Environments. apa: Blömer, J., Bobolz, J., Scheideler, C., & Setzer, A. (n.d.). Provably Anonymous Communication Based on Trusted Execution Environments. bibtex: '@book{Blömer_Bobolz_Scheideler_Setzer, title={Provably Anonymous Communication Based on Trusted Execution Environments}, author={Blömer, Johannes and Bobolz, Jan and Scheideler, Christian and Setzer, Alexander} }' chicago: Blömer, Johannes, Jan Bobolz, Christian Scheideler, and Alexander Setzer. Provably Anonymous Communication Based on Trusted Execution Environments, n.d. ieee: J. Blömer, J. Bobolz, C. Scheideler, and A. Setzer, Provably Anonymous Communication Based on Trusted Execution Environments. . mla: Blömer, Johannes, et al. Provably Anonymous Communication Based on Trusted Execution Environments. short: J. Blömer, J. Bobolz, C. Scheideler, A. Setzer, Provably Anonymous Communication Based on Trusted Execution Environments, n.d. date_created: 2018-11-25T08:08:40Z date_updated: 2022-01-06T07:02:43Z ddc: - '000' department: - _id: '7' - _id: '64' - _id: '79' file: - access_level: closed content_type: application/pdf creator: jbobolz date_created: 2018-12-31T09:55:30Z date_updated: 2018-12-31T09:55:30Z file_id: '6435' file_name: draft-2018.pdf file_size: 470968 relation: main_file success: 1 file_date_updated: 2018-12-31T09:55:30Z has_accepted_license: '1' language: - iso: eng project: - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '13' name: SFB 901 - Subproject C1 publication_status: draft status: public title: Provably Anonymous Communication Based on Trusted Execution Environments type: working_paper user_id: '27207' year: '2018' ... --- _id: '4344' author: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Sascha full_name: Brauer, Sascha id: '13291' last_name: Brauer - first_name: Kathrin full_name: Bujna, Kathrin last_name: Bujna citation: ama: 'Blömer J, Brauer S, Bujna K. Coresets for Fuzzy K-Means with Applications. In: 29th International Symposium on Algorithms and Computation  (ISAAC 2018). Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik; 2018:46:1--46:12. doi:10.4230/LIPIcs.ISAAC.2018.46' apa: 'Blömer, J., Brauer, S., & Bujna, K. (2018). Coresets for Fuzzy K-Means with Applications. In 29th International Symposium on Algorithms and Computation  (ISAAC 2018) (pp. 46:1--46:12). Jiaoxi, Yilan County, Taiwan: Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik. https://doi.org/10.4230/LIPIcs.ISAAC.2018.46' bibtex: '@inproceedings{Blömer_Brauer_Bujna_2018, title={Coresets for Fuzzy K-Means with Applications}, DOI={10.4230/LIPIcs.ISAAC.2018.46}, booktitle={29th International Symposium on Algorithms and Computation  (ISAAC 2018)}, publisher={Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik}, author={Blömer, Johannes and Brauer, Sascha and Bujna, Kathrin}, year={2018}, pages={46:1--46:12} }' chicago: Blömer, Johannes, Sascha Brauer, and Kathrin Bujna. “Coresets for Fuzzy K-Means with Applications.” In 29th International Symposium on Algorithms and Computation  (ISAAC 2018), 46:1--46:12. Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik, 2018. https://doi.org/10.4230/LIPIcs.ISAAC.2018.46. ieee: 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. mla: Blömer, Johannes, et al. “Coresets for Fuzzy K-Means with Applications.” 29th International Symposium on Algorithms and Computation  (ISAAC 2018), Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik, 2018, pp. 46:1--46:12, doi:10.4230/LIPIcs.ISAAC.2018.46. short: '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.' conference: end_date: 2018-12-19 location: Jiaoxi, Yilan County, Taiwan name: 29th International Symposium on Algorithms and Computation (ISAAC) start_date: 2018-12-17 date_created: 2018-09-03T08:04:19Z date_updated: 2022-01-06T07:00:57Z department: - _id: '64' doi: 10.4230/LIPIcs.ISAAC.2018.46 language: - iso: eng page: 46:1--46:12 project: - _id: '45' name: Soft-Clustering - Von Heuristiken zu Approximationsalgorithmen publication: 29th International Symposium on Algorithms and Computation (ISAAC 2018) publication_identifier: isbn: - 978-3-95977-094-1 publication_status: published publisher: Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik status: public title: Coresets for Fuzzy K-Means with Applications type: conference user_id: '13291' year: '2018' ... --- _id: '5426' author: - first_name: Oliver full_name: von Heißen, Oliver last_name: von Heißen citation: ama: von Heißen O. Implementierung und Analyse von Searchable Encryption.; 2018. apa: von Heißen, O. (2018). Implementierung und Analyse von Searchable Encryption. bibtex: '@book{von Heißen_2018, title={Implementierung und Analyse von Searchable Encryption}, author={von Heißen, Oliver}, year={2018} }' chicago: Heißen, Oliver von. Implementierung und Analyse von Searchable Encryption, 2018. ieee: O. von Heißen, Implementierung und Analyse von Searchable Encryption. 2018. mla: von Heißen, Oliver. Implementierung und Analyse von Searchable Encryption. 2018. short: O. von Heißen, Implementierung und Analyse von Searchable Encryption, 2018. date_created: 2018-11-08T10:13:08Z date_updated: 2022-01-06T07:01:53Z department: - _id: '64' extern: '1' language: - iso: ger status: public supervisor: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer title: Implementierung und Analyse von Searchable Encryption type: bachelorsthesis user_id: '13703' year: '2018' ... --- _id: '6597' author: - first_name: Jakob full_name: Juhnke, Jakob id: '48090' last_name: Juhnke citation: ama: Juhnke J. Models and Constructions for Secure Reputation Systems. Universität Paderborn; 2018. doi:10.17619/UNIPB/1-570 apa: Juhnke, J. (2018). Models and Constructions for Secure Reputation Systems. Universität Paderborn. https://doi.org/10.17619/UNIPB/1-570 bibtex: '@book{Juhnke_2018, title={Models and Constructions for Secure Reputation Systems}, DOI={10.17619/UNIPB/1-570}, publisher={Universität Paderborn}, author={Juhnke, Jakob}, year={2018} }' chicago: Juhnke, Jakob. Models and Constructions for Secure Reputation Systems. Universität Paderborn, 2018. https://doi.org/10.17619/UNIPB/1-570. ieee: J. Juhnke, Models and Constructions for Secure Reputation Systems. Universität Paderborn, 2018. mla: Juhnke, Jakob. Models and Constructions for Secure Reputation Systems. Universität Paderborn, 2018, doi:10.17619/UNIPB/1-570. short: J. Juhnke, Models and Constructions for Secure Reputation Systems, Universität Paderborn, 2018. date_created: 2019-01-10T07:51:07Z date_updated: 2022-01-06T07:03:13Z department: - _id: '64' doi: 10.17619/UNIPB/1-570 language: - iso: eng project: - _id: '13' name: SFB 901 - Subproject C1 - _id: '4' name: SFB 901 - Project Area C - _id: '1' name: SFB 901 publisher: Universität Paderborn status: public supervisor: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer title: Models and Constructions for Secure Reputation Systems type: dissertation user_id: '477' year: '2018' ... --- _id: '3873' author: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Fabian full_name: Eidens, Fabian id: '25078' last_name: Eidens - first_name: Jakob full_name: Juhnke, Jakob id: '48090' last_name: Juhnke citation: ama: 'Blömer J, Eidens F, Juhnke J. Enhanced Security of Attribute-Based Signatures. In: The International Conference on Cryptology And Network Security (CANS). Vol 11124. Lecture Notes in Computer Science. Springer; 2018:235-255. doi:10.1007/978-3-030-00434-7_12' apa: Blömer, J., Eidens, F., & Juhnke, J. (2018). Enhanced Security of Attribute-Based Signatures. The International Conference on Cryptology And Network Security (CANS), 11124, 235–255. https://doi.org/10.1007/978-3-030-00434-7_12 bibtex: '@inproceedings{Blömer_Eidens_Juhnke_2018, series={Lecture Notes in Computer Science}, title={Enhanced Security of Attribute-Based Signatures}, volume={11124}, DOI={10.1007/978-3-030-00434-7_12}, booktitle={The International Conference on Cryptology And Network Security (CANS)}, publisher={Springer}, author={Blömer, Johannes and Eidens, Fabian and Juhnke, Jakob}, year={2018}, pages={235–255}, collection={Lecture Notes in Computer Science} }' chicago: Blömer, Johannes, Fabian Eidens, and Jakob Juhnke. “Enhanced Security of Attribute-Based Signatures.” In The International Conference on Cryptology And Network Security (CANS), 11124:235–55. Lecture Notes in Computer Science. Springer, 2018. https://doi.org/10.1007/978-3-030-00434-7_12. ieee: '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.' mla: Blömer, Johannes, et al. “Enhanced Security of Attribute-Based Signatures.” The International Conference on Cryptology And Network Security (CANS), vol. 11124, Springer, 2018, pp. 235–55, doi:10.1007/978-3-030-00434-7_12. short: 'J. Blömer, F. Eidens, J. Juhnke, in: The International Conference on Cryptology And Network Security (CANS), Springer, 2018, pp. 235–255.' conference: location: Naples, Italy name: The International Conference on Cryptology And Network Security (CANS) date_created: 2018-08-10T09:44:09Z date_updated: 2023-01-10T10:26:13Z ddc: - '000' department: - _id: '64' doi: 10.1007/978-3-030-00434-7_12 file: - access_level: closed content_type: application/pdf creator: feidens date_created: 2018-11-08T10:15:00Z date_updated: 2018-11-08T10:15:00Z file_id: '5427' file_name: uc_abs.pdf file_size: 574228 relation: main_file file_date_updated: 2018-11-08T10:15:00Z has_accepted_license: '1' intvolume: ' 11124' language: - iso: eng main_file_link: - open_access: '1' url: https://eprint.iacr.org/2018/874 oa: '1' page: 235-255 project: - _id: '4' name: SFB 901 - Project Area C - _id: '13' name: SFB 901 - Subproject C1 - _id: '1' name: SFB 901 publication: The International Conference on Cryptology And Network Security (CANS) publication_identifier: isbn: - 978-3-030-00434-7 publication_status: published publisher: Springer series_title: Lecture Notes in Computer Science status: public title: Enhanced Security of Attribute-Based Signatures type: conference user_id: '25078' volume: 11124 year: '2018' ... --- _id: '2379' abstract: - lang: eng text: 'In this paper, we introduce the notion of delegatable attribute-based anonymous credentials (DAAC). Such systems offer fine-grained anonymous access control and they give the credential holder the ability to issue more restricted credentials to other users. In our model, credentials are parameterized with attributes that (1) express what the credential holder himself has been certified and (2) define which attributes he may issue to others. Furthermore, we present a practical construction of DAAC. For this construction, we deviate from the usual approach of embedding a certificate chain in the credential. Instead, we introduce a novel approach for which we identify a new primitive we call dynamically malleable signatures (DMS) as the main ingredient. This primitive may be of independent interest. We also give a first instantiation of DMS with efficient protocols. ' author: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Jan full_name: Bobolz, Jan id: '27207' last_name: Bobolz citation: ama: 'Blömer J, Bobolz J. Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures. In: ACNS 2018 Applied Cryptography & Network Security. LNCS. doi:10.1007/978-3-319-93387-0_12' apa: Blömer, J., & Bobolz, J. (n.d.). Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures. ACNS 2018 Applied Cryptography & Network Security. The 16th International Conference on Applied Cryptography and Network Security, Leuven, Belgium. https://doi.org/10.1007/978-3-319-93387-0_12 bibtex: '@inproceedings{Blömer_Bobolz, series={LNCS}, title={Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures}, DOI={10.1007/978-3-319-93387-0_12}, booktitle={ACNS 2018 Applied Cryptography & Network security}, author={Blömer, Johannes and Bobolz, Jan}, collection={LNCS} }' chicago: Blömer, Johannes, and Jan Bobolz. “Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures.” In ACNS 2018 Applied Cryptography & Network Security. LNCS, n.d. https://doi.org/10.1007/978-3-319-93387-0_12. ieee: '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.' mla: Blömer, Johannes, and Jan Bobolz. “Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures.” ACNS 2018 Applied Cryptography & Network Security, doi:10.1007/978-3-319-93387-0_12. short: 'J. Blömer, J. Bobolz, in: ACNS 2018 Applied Cryptography & Network Security, n.d.' conference: location: Leuven, Belgium name: The 16th International Conference on Applied Cryptography and Network Security date_created: 2018-04-17T12:28:25Z date_updated: 2023-01-10T10:28:43Z ddc: - '004' department: - _id: '7' - _id: '64' doi: 10.1007/978-3-319-93387-0_12 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T13:41:16Z date_updated: 2018-11-02T13:41:16Z file_id: '5252' file_name: 2018-340.pdf file_size: 542171 relation: main_file success: 1 file_date_updated: 2018-11-02T13:41:16Z has_accepted_license: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://eprint.iacr.org/2018/340 oa: '1' project: - _id: '4' name: SFB 901 - Project Area C - _id: '1' name: SFB 901 - _id: '13' name: SFB 901 - Subproject C1 publication: ACNS 2018 Applied Cryptography & Network security publication_status: accepted series_title: LNCS status: public title: Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures type: conference user_id: '25078' year: '2018' ... --- _id: '2908' author: - first_name: Kathrin full_name: Bujna, Kathrin last_name: Bujna citation: ama: Bujna K. Soft Clustering Algorithms - Theoretical and Practical Improvements. Universität Paderborn; 2017. doi:10.17619/UNIPB/1-226 apa: Bujna, K. (2017). Soft Clustering Algorithms - Theoretical and Practical Improvements. Universität Paderborn. https://doi.org/10.17619/UNIPB/1-226 bibtex: '@book{Bujna_2017, title={Soft Clustering Algorithms - Theoretical and Practical Improvements}, DOI={10.17619/UNIPB/1-226}, publisher={Universität Paderborn}, author={Bujna, Kathrin}, year={2017} }' chicago: Bujna, Kathrin. Soft Clustering Algorithms - Theoretical and Practical Improvements. Universität Paderborn, 2017. https://doi.org/10.17619/UNIPB/1-226. ieee: K. Bujna, Soft Clustering Algorithms - Theoretical and Practical Improvements. Universität Paderborn, 2017. mla: Bujna, Kathrin. Soft Clustering Algorithms - Theoretical and Practical Improvements. Universität Paderborn, 2017, doi:10.17619/UNIPB/1-226. short: K. Bujna, Soft Clustering Algorithms - Theoretical and Practical Improvements, Universität Paderborn, 2017. date_created: 2018-05-25T10:02:30Z date_updated: 2022-01-06T06:58:46Z department: - _id: '64' doi: 10.17619/UNIPB/1-226 main_file_link: - url: http://nbn-resolving.de/urn:nbn:de:hbz:466:2-29759 publisher: Universität Paderborn status: public supervisor: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer title: Soft Clustering Algorithms - Theoretical and Practical Improvements type: dissertation user_id: '25078' year: '2017' ... --- _id: '2967' author: - first_name: Johannes full_name: Blömer, Johannes id: '23' last_name: Blömer - first_name: Gennadij full_name: Liske, Gennadij last_name: Liske citation: ama: 'Blömer J, Liske G. 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). Vol 10693. Lecture Notes in Computer Science. Cham: Springer International Publishing; 2017:438-453. doi:10.1007/978-3-319-72453-9_35' apa: 'Blömer, J., & Liske, G. (2017). 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) (Vol. 10693, pp. 438–453). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-319-72453-9_35' bibtex: '@inproceedings{Blömer_Liske_2017, place={Cham}, series={Lecture Notes in Computer Science}, title={Subtleties in Security Definitions for Predicate Encryption with Public Index}, volume={10693}, DOI={10.1007/978-3-319-72453-9_35}, booktitle={Proceedings of the International Conference of Mathematical Aspects of Computer and Information Sciences (MACIS)}, publisher={Springer International Publishing}, author={Blömer, Johannes and Liske, Gennadij}, year={2017}, pages={438–453}, collection={Lecture Notes in Computer Science} }' chicago: 'Blömer, Johannes, and Gennadij 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), 10693:438–53. Lecture Notes in Computer Science. Cham: Springer International Publishing, 2017. https://doi.org/10.1007/978-3-319-72453-9_35.' ieee: 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. mla: Blömer, Johannes, and Gennadij Liske. “Subtleties in Security Definitions for Predicate Encryption with Public Index.” Proceedings of the International Conference of Mathematical Aspects of Computer and Information Sciences (MACIS), vol. 10693, Springer International Publishing, 2017, pp. 438–53, doi:10.1007/978-3-319-72453-9_35. short: '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.' date_created: 2018-06-04T12:17:48Z date_updated: 2022-01-06T06:58:49Z ddc: - '000' department: - _id: '64' doi: 10.1007/978-3-319-72453-9_35 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T14:52:10Z date_updated: 2018-11-02T14:52:10Z file_id: '5286' file_name: SubtletiesInSecurityDefinition.pdf file_size: 463904 relation: main_file success: 1 file_date_updated: 2018-11-02T14:52:10Z has_accepted_license: '1' intvolume: ' 10693' language: - iso: eng main_file_link: - open_access: '1' url: https://eprint.iacr.org/2017/453.pdf oa: '1' page: 438-453 place: Cham project: - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '13' name: SFB 901 - Subproject C1 publication: Proceedings of the International Conference of Mathematical Aspects of Computer and Information Sciences (MACIS) publication_identifier: isbn: - '9783319724522' - '9783319724539' issn: - 0302-9743 - 1611-3349 publication_status: published publisher: Springer International Publishing series_title: Lecture Notes in Computer Science status: public title: Subtleties in Security Definitions for Predicate Encryption with Public Index type: conference user_id: '477' volume: 10693 year: '2017' ...