% % This file was created by the TYPO3 extension % bib % --- Timezone: CET % Creation date: 2024-03-28 % Creation time: 18-13-34 % --- Number of references % 3 % @Article { 2023_pennekamp_purchase_inquiries, title = {Offering Two-Way Privacy for Evolved Purchase Inquiries}, journal = {ACM Transactions on Internet Technology}, year = {2023}, month = {11}, day = {17}, volume = {23}, number = {4}, abstract = {Dynamic and flexible business relationships are expected to become more important in the future to accommodate specialized change requests or small-batch production. Today, buyers and sellers must disclose sensitive information on products upfront before the actual manufacturing. However, without a trust relation, this situation is precarious for the involved companies as they fear for their competitiveness. Related work overlooks this issue so far: Existing approaches only protect the information of a single party only, hindering dynamic and on-demand business relationships. To account for the corresponding research gap of inadequately privacy-protected information and to deal with companies without an established trust relation, we pursue the direction of innovative privacy-preserving purchase inquiries that seamlessly integrate into today's established supplier management and procurement processes. Utilizing well-established building blocks from private computing, such as private set intersection and homomorphic encryption, we propose two designs with slightly different privacy and performance implications to securely realize purchase inquiries over the Internet. In particular, we allow buyers to consider more potential sellers without sharing sensitive information and relieve sellers of the burden of repeatedly preparing elaborate yet discarded offers. We demonstrate our approaches' scalability using two real-world use cases from the domain of production technology. Overall, we present deployable designs that offer two-way privacy for purchase inquiries and, in turn, fill a gap that currently hinders establishing dynamic and flexible business relationships. In the future, we expect significantly increasing research activity in this overlooked area to address the needs of an evolving production landscape.}, keywords = {bootstrapping procurement; secure industrial collaboration; private set intersection; homomorphic encryption; Internet of Production}, tags = {internet-of-production}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2023/2023-pennekamp-purchase-inquiries.pdf}, publisher = {ACM}, ISSN = {1533-5399}, DOI = {10.1145/3599968}, reviewed = {1}, author = {Pennekamp, Jan and Dahlmanns, Markus and Fuhrmann, Frederik and Heutmann, Timo and Kreppein, Alexander and Grunert, Dennis and Lange, Christoph and Schmitt, Robert H. and Wehrle, Klaus} } @Inproceedings { 2023_pennekamp_benchmarking_comparison, title = {Designing Secure and Privacy-Preserving Information Systems for Industry Benchmarking}, year = {2023}, month = {6}, day = {15}, volume = {13901}, pages = {489-505}, abstract = {Benchmarking is an essential tool for industrial organizations to identify potentials that allows them to improve their competitive position through operational and strategic means. However, the handling of sensitive information, in terms of (i) internal company data and (ii) the underlying algorithm to compute the benchmark, demands strict (technical) confidentiality guarantees—an aspect that existing approaches fail to address adequately. Still, advances in private computing provide us with building blocks to reliably secure even complex computations and their inputs, as present in industry benchmarks. In this paper, we thus compare two promising and fundamentally different concepts (hardware- and software-based) to realize privacy-preserving benchmarks. Thereby, we provide detailed insights into the concept-specific benefits. Our evaluation of two real-world use cases from different industries underlines that realizing and deploying secure information systems for industry benchmarking is possible with today's building blocks from private computing.}, note = {Lecture Notes in Computer Science (LNCS), Volume 13901}, keywords = {real-world computing; trusted execution environments; homomorphic encryption; key performance indicators; benchmarking}, tags = {internet-of-production}, url = {https://jpennekamp.de/wp-content/papercite-data/pdf/plv+23.pdf}, publisher = {Springer}, booktitle = {Proceedings of the 35th International Conference on Advanced Information Systems Engineering (CAiSE '23), June 12-16, 2023, Zaragoza, Spain}, event_place = {Zaragoza, Spain}, event_name = {35th International Conference on Advanced Information Systems Engineering (CAiSE '23)}, event_date = {June 12-16, 2023}, ISBN = {978-3-031-34559-3}, ISSN = {0302-9743}, DOI = {10.1007/978-3-031-34560-9_29}, reviewed = {1}, author = {Pennekamp, Jan and Lohm{\"o}ller, Johannes and Vlad, Eduard and Loos, Joscha and Rodemann, Niklas and Sapel, Patrick and Fink, Ina Berenice and Schmitz, Seth and Hopmann, Christian and Jarke, Matthias and Schuh, G{\"u}nther and Wehrle, Klaus and Henze, Martin} } @Inproceedings { 2023-lorz-cired, title = {Interconnected grid protection systems - reference grid for testing an adaptive protection scheme}, year = {2023}, pages = {3286-3290}, tags = {ven2us}, booktitle = {27th International Conference on Electricity Distribution (CIRED 2023), Rome, Italy, June 12-15, 2023}, event_place = {Rome, Italy}, event_name = {International Conference \& Exhibition on Electricity Distribution (CIRED)}, event_date = {June 12-15, 2023}, DOI = {10.1049/icp.2023.0864}, reviewed = {1}, author = {Lorz, Tobias and Jaeger, Johann and Selimaj, Antigona and Hacker, Immanuel and Ulbig, Andreas and Heckel, Jan-Peter and Becker, Christian and Dahlmanns, Markus and Fink, Ina Berenice and Wehrle, Klaus and Erichsen, Gerrit and Schindler, Michael and Luxenburger, Rainer and Lin, Guosong} }