% % This file was created by the TYPO3 extension % bib % --- Timezone: CET % Creation date: 2024-03-29 % Creation time: 10-41-51 % --- Number of references % 70 % @Article { 2024_lohmoeller_sovereignty-survey, title = {The Unresolved Need for Dependable Guarantees on Security, Sovereignty, and Trust in Data Ecosystems}, journal = {Data \& Knowledge Engineering}, year = {2024}, month = {3}, day = {19}, volume = {151}, abstract = {Data ecosystems emerged as a new paradigm to facilitate the automated and massive exchange of data from heterogeneous information sources between different stakeholders. However, the corresponding benefits come with unforeseen risks as sensitive information is potentially exposed, questioning their reliability. Consequently, data security is of utmost importance and, thus, a central requirement for successfully realizing data ecosystems. Academia has recognized this requirement, and current initiatives foster sovereign participation via a federated infrastructure where participants retain local control over what data they offer to whom. However, recent proposals place significant trust in remote infrastructure by implementing organizational security measures such as certification processes before the admission of a participant. At the same time, the data sensitivity incentivizes participants to bypass the organizational security measures to maximize their benefit. This issue significantly weakens security, sovereignty, and trust guarantees and highlights that organizational security measures are insufficient in this context. In this paper, we argue that data ecosystems must be extended with technical means to (re)establish dependable guarantees. We underpin this need with three representative use cases for data ecosystems, which cover personal, economic, and governmental data, and systematically map the lack of dependable guarantees in related work. To this end, we identify three enablers of dependable guarantees, namely trusted remote policy enforcement, verifiable data tracking, and integration of resource-constrained participants. These enablers are critical for securely implementing data ecosystems in data-sensitive contexts.}, keywords = {Data sharing; Confidentiality; Integrity protection; Data Markets; Distributed databases}, tags = {internet-of-production}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2024/2024-lohmoeller-data-sovereignty-survey.pdf}, publisher = {Elsevier}, ISSN = {0169-023X}, DOI = {10.1016/j.datak.2024.102301}, reviewed = {1}, author = {Lohm{\"o}ller, Johannes and Pennekamp, Jan and Matzutt, Roman and Schneider, Carolin Victoria and Vlad, Eduard and Trautwein, Christian and Wehrle, Klaus} } @Article { 2024_pennekamp_supply-chain-survey, title = {An Interdisciplinary Survey on Information Flows in Supply Chains}, journal = {ACM Computing Surveys}, year = {2024}, month = {2}, day = {1}, volume = {56}, number = {2}, abstract = {Supply chains form the backbone of modern economies and therefore require reliable information flows. In practice, however, supply chains face severe technical challenges, especially regarding security and privacy. In this work, we consolidate studies from supply chain management, information systems, and computer science from 2010--2021 in an interdisciplinary meta-survey to make this topic holistically accessible to interdisciplinary research. In particular, we identify a significant potential for computer scientists to remedy technical challenges and improve the robustness of information flows. We subsequently present a concise information flow-focused taxonomy for supply chains before discussing future research directions to provide possible entry points.}, keywords = {information flows; data communication; supply chain management; data security; data sharing; systematic literature review}, tags = {internet-of-production}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2024/2024-pennekamp-supply-chain-survey.pdf}, publisher = {ACM}, ISSN = {0360-0300}, DOI = {10.1145/3606693}, reviewed = {1}, author = {Pennekamp, Jan and Matzutt, Roman and Klinkm{\"u}ller, Christopher and Bader, Lennart and Serror, Martin and Wagner, Eric and Malik, Sidra and Spi{\ss}, Maria and Rahn, Jessica and G{\"u}rpinar, Tan and Vlad, Eduard and Leemans, Sander J. J. and Kanhere, Salil S. and Stich, Volker and Wehrle, Klaus} } @Inproceedings { 2023_sloun_accessibility, title = {Poster: Vulcan - Repurposing Accessibility Features for Behavior-based Intrusion Detection Dataset Generation}, year = {2023}, month = {11}, day = {27}, pages = {3543-3545}, abstract = {The generation of datasets is one of the most promising approaches to collecting the necessary behavior data to train machine learning models for host-based intrusion detection. While various dataset generation methods have been proposed, they are often limited and either only generate network traffic or are restricted to a narrow subset of applications. We present Vulcan, a preliminary framework that uses accessibility features to generate datasets by simulating user interactions for an extendable set of applications. It uses behavior profiles that define realistic user behavior and facilitate dataset updates upon changes in software versions, thus reducing the effort required to keep a dataset relevant. Preliminary results show that using accessibility features presents a promising approach to improving the quality of datasets in the HIDS domain.}, keywords = {Intrusion Detection, Dataset Generation, Accessibility Features}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2023/2023-sloun-vulcan-accessibility.pdf}, publisher = {ACM}, booktitle = {Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications Security (CCS '23), November 26-30, 2023, Copenhagen, Denmark}, event_place = {Copenhagen, Denmark}, event_date = {November 26-30, 2023}, ISBN = {979-8-4007-0050-7/23/11}, DOI = {10.1145/3576915.3624404}, reviewed = {1}, author = {van Sloun, Christian and Wehrle, Klaus} } @Inproceedings { 2023_lohmoeller_transparency, title = {Poster: Bridging Trust Gaps: Data Usage Transparency in Federated Data Ecosystems}, year = {2023}, month = {11}, day = {27}, keywords = {data usage control; data ecosystems; transparency logs}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2023/2023-lohmoeller-transparency.pdf}, publisher = {ACM}, booktitle = {Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications Security (CCS ’23), November 26-30, 2023, Copenhagen, Denmark}, event_place = {Copenhagen, Denmark}, event_date = {November 26-30, 2023}, ISBN = {979-8-4007-0050-7/23/11}, DOI = {10.1145/3576915.3624371}, reviewed = {1}, author = {Lohm{\"o}ller, Johannes and Vlad, Eduard and Dahlmanns, Markus 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} } @Incollection { 2023_pennekamp_crd-a.i, title = {Evolving the Digital Industrial Infrastructure for Production: Steps Taken and the Road Ahead}, year = {2023}, month = {2}, day = {8}, pages = {35-60}, abstract = {The Internet of Production (IoP) leverages concepts such as digital shadows, data lakes, and a World Wide Lab (WWL) to advance today’s production. Consequently, it requires a technical infrastructure that can support the agile deployment of these concepts and corresponding high-level applications, which, e.g., demand the processing of massive data in motion and at rest. As such, key research aspects are the support for low-latency control loops, concepts on scalable data stream processing, deployable information security, and semantically rich and efficient long-term storage. In particular, such an infrastructure cannot continue to be limited to machines and sensors, but additionally needs to encompass networked environments: production cells, edge computing, and location-independent cloud infrastructures. Finally, in light of the envisioned WWL, i.e., the interconnection of production sites, the technical infrastructure must be advanced to support secure and privacy-preserving industrial collaboration. To evolve today’s production sites and lay the infrastructural foundation for the IoP, we identify five broad streams of research: (1) adapting data and stream processing to heterogeneous data from distributed sources, (2) ensuring data interoperability between systems and production sites, (3) exchanging and sharing data with different stakeholders, (4) network security approaches addressing the risks of increasing interconnectivity, and (5) security architectures to enable secure and privacy-preserving industrial collaboration. With our research, we evolve the underlying infrastructure from isolated, sparsely networked production sites toward an architecture that supports high-level applications and sophisticated digital shadows while facilitating the transition toward a WWL.}, keywords = {Cyber-physical production systems; Data streams; Industrial data processing; Industrial network security; Industrial data security; Secure industrial collaboration}, tags = {internet-of-production}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2023/2023-pennekamp-iop-a.i.pdf}, publisher = {Springer}, series = {Interdisciplinary Excellence Accelerator Series}, booktitle = {Internet of Production: Fundamentals, Applications and Proceedings}, ISBN = {978-3-031-44496-8}, DOI = {10.1007/978-3-031-44497-5_2}, reviewed = {1}, author = {Pennekamp, Jan and Belova, Anastasiia and Bergs, Thomas and Bodenbenner, Matthias and B{\"u}hrig-Polaczek, Andreas and Dahlmanns, Markus and Kunze, Ike and Kr{\"o}ger, Moritz and Geisler, Sandra and Henze, Martin and L{\"u}tticke, Daniel and Montavon, Benjamin and Niemietz, Philipp and Ortjohann, Lucia and Rudack, Maximilian and Schmitt, Robert H. and Vroomen, Uwe and Wehrle, Klaus and Zeng, Michael} } @Inproceedings { 2022-rechenberg-cim, title = {Guiding Ship Navigators through the Heavy Seas of Cyberattacks}, year = {2022}, month = {10}, keywords = {Maritime Cybersecurity, Intrusion Detection System, Integrated Bridge System, IEC 61162-450, NMEA 0183}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2022/2022-rechenberg-guiding.pdf}, web_url = {https://zenodo.org/record/7148794}, publisher = {Zenodo}, booktitle = {European Workshop on Maritime Systems Resilience and Security (MARESEC 2022)}, event_place = {Bremerhaven, Germany}, DOI = {10.5281/zenodo.7148794}, reviewed = {1}, author = {von Rechenberg, Merlin and R{\"o}{\ss}ler, Nina and Schmidt, Mari and Wolsing, Konrad and Motz, Florian and Bergmann, Michael and Padilla, Elmar and Bauer, Jan} } @Article { 2022-henze-tii-prada, title = {Complying with Data Handling Requirements in Cloud Storage Systems}, journal = {IEEE Transactions on Cloud Computing}, year = {2022}, month = {9}, volume = {10}, number = {3}, pages = {1661-1674}, abstract = {In past years, cloud storage systems saw an enormous rise in usage. However, despite their popularity and importance as underlying infrastructure for more complex cloud services, today’s cloud storage systems do not account for compliance with regulatory, organizational, or contractual data handling requirements by design. Since legislation increasingly responds to rising data protection and privacy concerns, complying with data handling requirements becomes a crucial property for cloud storage systems. We present Prada , a practical approach to account for compliance with data handling requirements in key-value based cloud storage systems. To achieve this goal, Prada introduces a transparent data handling layer, which empowers clients to request specific data handling requirements and enables operators of cloud storage systems to comply with them. We implement Prada on top of the distributed database Cassandra and show in our evaluation that complying with data handling requirements in cloud storage systems is practical in real-world cloud deployments as used for microblogging, data sharing in the Internet of Things, and distributed email storage.}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2022/2022-henze-tii-prada.pdf}, misc2 = {Online}, language = {en}, ISSN = {2168-7161}, DOI = {10.1109/TCC.2020.3000336}, reviewed = {1}, author = {Henze, Martin and Matzutt, Roman and Hiller, Jens and M{\"u}hmer, Erik and Ziegeldorf, Jan Henrik and van der Giet, Johannes and Wehrle, Klaus} } @Proceedings { 2022-wolsing-radarsec, title = {Network Attacks Against Marine Radar Systems: A Taxonomy, Simulation Environment, and Dataset}, year = {2022}, month = {9}, tags = {rfc}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2022/2022-wolsing-radar.pdf}, publisher = {IEEE}, event_place = {Edmonton, Canada}, event_name = {47th IEEE Conference on Local Computer Networks (LCN)}, event_date = {September 26-29, 2022}, DOI = {10.1109/LCN53696.2022.9843801}, reviewed = {1}, author = {Wolsing, Konrad and Saillard, Antoine and Bauer, Jan and Wagner, Eric and van Sloun, Christian and Fink, Ina Berenice and Schmidt, Mari and Wehrle, Klaus and Henze, Martin} } @Inproceedings { 2022-wolsing-simple, title = {Can Industrial Intrusion Detection Be SIMPLE?}, year = {2022}, month = {9}, volume = {978-3-031-17143-7}, pages = {574--594}, abstract = {Cyberattacks against industrial control systems pose a serious risk to the safety of humans and the environment. Industrial intrusion detection systems oppose this threat by continuously monitoring industrial processes and alerting any deviations from learned normal behavior. To this end, various streams of research rely on advanced and complex approaches, i.e., artificial neural networks, thus achieving allegedly high detection rates. However, as we show in an analysis of 70 approaches from related work, their inherent complexity comes with undesired properties. For example, they exhibit incomprehensible alarms and models only specialized personnel can understand, thus limiting their broad applicability in a heterogeneous industrial domain. Consequentially, we ask whether industrial intrusion detection indeed has to be complex or can be SIMPLE instead, i.e., Sufficient to detect most attacks, Independent of hyperparameters to dial-in, Meaningful in model and alerts, Portable to other industrial domains, Local to a part of the physical process, and computationally Efficient. To answer this question, we propose our design of four SIMPLE industrial intrusion detection systems, such as simple tests for the minima and maxima of process values or the rate at which process values change. Our evaluation of these SIMPLE approaches on four state-of-the-art industrial security datasets reveals that SIMPLE approaches can perform on par with existing complex approaches from related work while simultaneously being comprehensible and easily portable to other scenarios. Thus, it is indeed justified to raise the question of whether industrial intrusion detection needs to be inherently complex.}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2022/2022-wolsing-simple.pdf}, editor = {Atluri, Vijayalakshmi and Di Pietro, Roberto and Jensen, Christian D. and Meng, Weizhi}, publisher = {Springer Nature Switzerland}, booktitle = {Proceedings of the 27th European Symposium on Research in Computer Security (ESORICS '22), September 26-30, 2022, Copenhagen, Denmark}, event_place = {Copenhagen, Denmark}, event_name = {27th European Symposium on Research in Computer Security (ESORICS)}, event_date = {September 26-30, 2022}, DOI = {10.1007/978-3-031-17143-7_28}, reviewed = {1}, author = {Wolsing, Konrad and Thiemt, Lea and van Sloun, Christian and Wagner, Eric and Wehrle, Klaus and Henze, Martin} } @Article { 2022_brauner_iop, title = {A Computer Science Perspective on Digital Transformation in Production}, journal = {ACM Transactions on Internet of Things}, year = {2022}, month = {5}, day = {1}, volume = {3}, number = {2}, abstract = {The Industrial Internet-of-Things (IIoT) promises significant improvements for the manufacturing industry by facilitating the integration of manufacturing systems by Digital Twins. However, ecological and economic demands also require a cross-domain linkage of multiple scientific perspectives from material sciences, engineering, operations, business, and ergonomics, as optimization opportunities can be derived from any of these perspectives. To extend the IIoT to a true Internet of Production, two concepts are required: first, a complex, interrelated network of Digital Shadows which combine domain-specific models with data-driven AI methods; and second, the integration of a large number of research labs, engineering, and production sites as a World Wide Lab which offers controlled exchange of selected, innovation-relevant data even across company boundaries. In this article, we define the underlying Computer Science challenges implied by these novel concepts in four layers: Smart human interfaces provide access to information that has been generated by model-integrated AI. Given the large variety of manufacturing data, new data modeling techniques should enable efficient management of Digital Shadows, which is supported by an interconnected infrastructure. Based on a detailed analysis of these challenges, we derive a systematized research roadmap to make the vision of the Internet of Production a reality.}, keywords = {Internet of Production; World Wide Lab; Digital Shadows; Industrial Internet of Things}, tags = {internet-of-production}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2022/2022-brauner-digital-transformation.pdf}, publisher = {ACM}, ISSN = {2691-1914}, DOI = {10.1145/3502265}, reviewed = {1}, author = {Brauner, Philipp and Dalibor, Manuela and Jarke, Matthias and Kunze, Ike and Koren, Istv{\'a}n and Lakemeyer, Gerhard and Liebenberg, Martin and Michael, Judith and Pennekamp, Jan and Quix, Christoph and Rumpe, Bernhard and van der Aalst, Wil and Wehrle, Klaus and Wortmann, Andreas and Ziefle, Martina} } @Inproceedings { 2020-henze-ccs-cybersecurity, title = {Poster: Cybersecurity Research and Training for Power Distribution Grids -- A Blueprint}, year = {2020}, month = {11}, day = {9}, abstract = {Mitigating cybersecurity threats in power distribution grids requires a testbed for cybersecurity, e.g., to evaluate the (physical) impact of cyberattacks, generate datasets, test and validate security approaches, as well as train technical personnel. In this paper, we present a blueprint for such a testbed that relies on network emulation and power flow computation to couple real network applications with a simulated power grid. We discuss the benefits of our approach alongside preliminary results and various use cases for cybersecurity research and training for power distribution grids.}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2020/2020-henze-ccs-cybersecurity.pdf}, publisher = {ACM}, address = {New York, NY, USA}, booktitle = {Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security (CCS ’20), November 9–13, 2020, Virtual Event, USA.}, event_place = {Virtual Event, USA}, event_date = {November 9-13, 2020}, DOI = {10.1145/3372297.3420016}, reviewed = {1}, author = {Henze, Martin and Bader, Lennart and Filter, Julian and Lamberts, Olav and Ofner, Simon and van der Velde, Dennis} } @Article { 2020-holz-ccr-tls13, title = {Tracking the deployment of TLS 1.3 on the Web: A story of experimentation and centralization}, journal = {ACM SIGCOMM Computer Communications Review (CCR)}, year = {2020}, month = {7}, volume = {50}, number = {3}, pages = {3-15}, note = {Selected for the 'Best of CCR' session at SIGCOMM 2021.}, url = {https://ccronline.sigcomm.org/wp-content/uploads/2020/08/sigcomm-ccr-paper430-with-open-review.pdf}, publisher = {Association for Computing Machinery}, address = {New York, NY, USA}, DOI = {10.1145/3411740.3411742}, reviewed = {1}, author = {Holz, Ralph and Hiller, Jens and Amann, Johanna and Razaghpanah, Abbas and Jost, Thomas and Vallina-Rodriguez, Narseo and Hohlfeld, Oliver} } @Article { 2020_mann_welding_layers, title = {Connected, digitalized welding production — Secure, ubiquitous utilization of data across process layers}, journal = {Advanced Structured Materials}, year = {2020}, month = {4}, day = {1}, volume = {125}, pages = {101-118}, abstract = {A connected, digitalized welding production unlocks vast and dynamic potentials: from improving state of the art welding to new business models in production. For this reason, offering frameworks, which are capable of addressing multiple layers of applications on the one hand and providing means of data security and privacy for ubiquitous dataflows on the other hand, is an important step to enable the envisioned advances. In this context, welding production has been introduced from the perspective of interlaced process layers connecting information sources across various entities. Each layer has its own distinct challenges from both a process view and a data perspective. Besides, investigating each layer promises to reveal insight into (currently unknown) process interconnections. This approach has been substantiated by methods for data security and privacy to draw a line between secure handling of data and the need of trustworthy dealing with sensitive data among different parties and therefore partners. In conclusion, the welding production has to develop itself from an accumulation of local and isolated data sources towards a secure industrial collaboration in an Internet of Production.}, note = {Proceedings of the 1st International Conference on Advanced Joining Processes (AJP '19)}, keywords = {Welding Production; Industrie 4.0; Internet of Production; Data Security; Data Privacy}, tags = {Internet-of-Production}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2020/2020-mann-welding-layers.pdf}, publisher = {Springer}, event_place = {Ponta Delgada, Azores, Portugal}, event_date = {October 24-25, 2019}, ISBN = {978-981-15-2956-6}, ISSN = {1869-8433}, DOI = {10.1007/978-981-15-2957-3_8}, reviewed = {1}, author = {Mann, Samuel and Pennekamp, Jan and Brockhoff, Tobias and Farhang, Anahita and Pourbafrani, Mahsa and Oster, Lukas and Uysal, Merih Seran and Sharma, Rahul and Reisgen, Uwe and Wehrle, Klaus and van der Aalst, Wil} } @Article { 2020-wehrle-digitalshadows, title = {Mit ''Digitalen Schatten'' Daten verdichten und darstellen : Der Exzellenzcluster ''Internet der Produktion'' forscht {\"u}ber die Produktionstechnik hinaus}, journal = {Der Profilbereich ''Information \& Communication Technology''}, year = {2020}, ISSN = {0179-079X}, DOI = {10.18154/RWTH-2021-02496}, author = {Jarke, Matthias and van der Aalst, Wil and Brecher, Christian and Brockmann, Matthias and Koren, Istv{\'a}n and Lakemeyer, Gerhard and Rumpe, Bernhard and Schuh, G{\"u}nther and Wehrle, Klaus and Ziefle, Martina} } @Inproceedings { 2019_pennekamp_infrastructure, title = {Towards an Infrastructure Enabling the Internet of Production}, year = {2019}, month = {5}, day = {8}, pages = {31-37}, abstract = {New levels of cross-domain collaboration between manufacturing companies throughout the supply chain are anticipated to bring benefits to both suppliers and consumers of products. Enabling a fine-grained sharing and analysis of data among different stakeholders in an automated manner, such a vision of an Internet of Production (IoP) introduces demanding challenges to the communication, storage, and computation infrastructure in production environments. In this work, we present three example cases that would benefit from an IoP (a fine blanking line, a high pressure die casting process, and a connected job shop) and derive requirements that cannot be met by today’s infrastructure. In particular, we identify three orthogonal research objectives: (i) real-time control of tightly integrated production processes to offer seamless low-latency analysis and execution, (ii) storing and processing heterogeneous production data to support scalable data stream processing and storage, and (iii) secure privacy-aware collaboration in production to provide a basis for secure industrial collaboration. Based on a discussion of state-of-the-art approaches for these three objectives, we create a blueprint for an infrastructure acting as an enabler for an IoP.}, keywords = {Internet of Production; Cyber-Physical Systems; Data Processing; Low Latency; Secure Industrial Collaboration}, tags = {internet-of-production}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-pennekamp-iop-infrastructure.pdf}, publisher = {IEEE}, booktitle = {Proceedings of the 2nd IEEE International Conference on Industrial Cyber-Physical Systems (ICPS '19), May 6-9, 2019, Taipei, TW}, event_place = {Taipei, TW}, event_date = {May 6-9, 2019}, ISBN = {978-1-5386-8500-6/19}, DOI = {10.1109/ICPHYS.2019.8780276}, reviewed = {1}, author = {Pennekamp, Jan and Glebke, Ren{\'e} and Henze, Martin and Meisen, Tobias and Quix, Christoph and Hai, Rihan and Gleim, Lars and Niemietz, Philipp and Rudack, Maximilian and Knape, Simon and Epple, Alexander and Trauth, Daniel and Vroomen, Uwe and Bergs, Thomas and Brecher, Christian and B{\"u}hrig-Polaczek, Andreas and Jarke, Matthias and Wehrle, Klaus} } @Inproceedings { 2019_wagner_dispute_resolution, title = {Dispute Resolution for Smart Contract-based Two Party Protocols}, year = {2019}, month = {5}, abstract = {Blockchain systems promise to mediate interactions of mutually distrusting parties without a trusted third party. However, protocols with full smart contract-based security are either limited in functionality or complex, with high costs for secured interactions. This observation leads to the development of protocol-specific schemes to avoid costly dispute resolution in case all participants remain honest. In this paper, we introduce SmartJudge, an extensible generalization of this trend for smart contract-based two-party protocols. SmartJudge relies on a protocol-independent mediator smart contract that moderates two-party interactions and only consults protocol-specific verifier smart contracts in case of a dispute. This way, SmartJudge avoids verification costs in absence of disputes and sustains interaction confidentiality among honest parties. We implement verifier smart contracts for cross-blockchain trades and exchanging digital goods and show that SmartJudge can reduce costs by 46-50\% and 22\% over current state of the art, respectively.}, keywords = {Ethereum,Bitcoin,smart contracts,two-party protocols,dispute resolution,cross-blockchain trades}, tags = {mynedata, impact-digital, rfc}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-wagner-dispute.pdf}, publisher = {IEEE}, booktitle = {IEEE International Conference on Blockchain and Cryptocurrency 2019 (ICBC 2019)}, event_place = {Seoul, South Korea}, event_name = {IEEE International Conference on Blockchain and Cryptocurrency 2019}, language = {English}, DOI = {10.1109/BLOC.2019.8751312}, reviewed = {1}, author = {Wagner, Eric and V{\"o}lker, Achim and Fuhrmann, Frederik and Matzutt, Roman and Wehrle, Klaus} } @Inproceedings { 2018-tzimmermann-toplists, title = {A Long Way to the Top: Significance, Structure, and Stability of Internet Top Lists}, year = {2018}, month = {10}, day = {31}, tags = {maki}, url = {https://dl.acm.org/citation.cfm?id=3278574}, web_url = {https://arxiv.org/abs/1805.11506}, publisher = {ACM}, booktitle = {Proceedings of the 2018 Internet Measurement Conference (IMC), Boston, USA}, event_place = {Boston, US}, event_name = {Internet Measurement Conference 2018}, event_date = {31.10.18 - 2.11.18}, language = {en}, DOI = {10.1145/3278532.3278574}, reviewed = {1}, author = {Scheitle, Quirin and Hohlfeld, Oliver and Gamba, Julien and Jelten, Jonas and Zimmermann, Torsten and Strowes, Stephen D. and Vallina-Rodriguez, Narseo} } @Inproceedings { 2018-serror-wowmom-relaying, title = {Practical Evaluation of Cooperative Communication for Ultra-Reliability and Low-Latency}, year = {2018}, month = {6}, day = {11}, tags = {iop}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-serror-wowmom-relaying.pdf}, publisher = {IEEE}, howpublished = {online}, booktitle = {19th IEEE International Symposium on ''A World of Wireless, Mobile and Multimedia Networks'' (IEEE WoWMoM 2018), Chania, Greece}, event_place = {Chania, Crete, Greece}, event_name = {WoWMoM}, event_date = {June 12-15, 2018}, ISBN = {978-1-5386-4725-7}, DOI = {10.1109/WoWMoM.2018.8449807}, reviewed = {1}, author = {Serror, Martin and Vaa{\ss}en, Sebastian and Wehrle, Klaus and Gross, James} } @Article { 2018-scheitle-ccr-caa, title = {A First Look at Certification Authority Authorization (CAA)}, journal = {ACM SIGCOMM Computer Communications Review (CCR)}, year = {2018}, month = {4}, volume = {48}, pages = {10-23}, note = {https://www.net.in.tum.de/fileadmin/bibtex/publications/papers/caa17.pdf}, tags = {internet-measurements}, url = {https://ccronline.sigcomm.org/wp-content/uploads/2018/05/sigcomm-ccr-final163.pdf}, web_url = {https://ccronline.sigcomm.org/2018/a-first-look-at-certification-authority-authorization-caa/}, web_url_date = {2018-06-05}, DOI = {10.1145/3213232.3213235}, reviewed = {1}, author = {Scheitle, Quirin and Chung, Taejoong and Hiller, Jens and Gasser, Oliver and Naab, Johannes and van Rijswijk-Deij, Roland and Hohlfeld, Oliver and Holz, Ralph and Choffnes, Dave and Mislove, Alan and Carle, Georg} } @Inproceedings { 2017-henze-ic2e-prada, title = {Practical Data Compliance for Cloud Storage}, year = {2017}, month = {4}, day = {4}, pages = {252-258}, tags = {ssiclops, ipacs}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2017/2017-henze-ic2e-prada.pdf}, misc2 = {Online}, publisher = {IEEE}, booktitle = {Proceedings of the 2017 IEEE International Conference on Cloud Engineering (IC2E 2017), Vancouver, BC, Canada}, language = {en}, ISBN = {978-1-5090-5817-4}, DOI = {10.1109/IC2E.2017.32}, reviewed = {1}, author = {Henze, Martin and Matzutt, Roman and Hiller, Jens and M{\"u}hmer, Erik and Ziegeldorf, Jan Henrik and van der Giet, Johannes and Wehrle, Klaus} } @Poster { 2014-wisec-ziegeldorf-ipin, title = {POSTER: Privacy-preserving Indoor Localization}, year = {2014}, month = {7}, day = {23}, tags = {rfc}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2014/2014-ziegeldorf-poster-wisec.pdf}, organization = {7th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec '14) (Poster)}, language = {en}, DOI = {10.13140/2.1.2847.4886}, reviewed = {1}, author = {Ziegeldorf, Jan Henrik and Viol, Nicolai and Henze, Martin and Wehrle, Klaus} } @Inproceedings { 2014-hummen-delegation, title = {Delegation-based Authentication and Authorization for the IP-based Internet of Things}, year = {2014}, month = {6}, day = {30}, pages = {284-292}, tags = {iotsec; sensorcloud}, url = {http://www.comsys.rwth-aachen.de/fileadmin/papers/2014/2014-hummen-secon-delegation.pdf}, misc2 = {Online}, publisher = {IEEE}, booktitle = {11th IEEE International Conference on Sensing, Communication, and Networking (SECON 2014)}, event_place = {Singapore}, event_name = {11th IEEE International Conference on Sensor, Communication, and Networking (SECON 2014)}, event_date = {30.06. - 03.07.2014}, language = {en}, DOI = {10.1109/SAHCN.2014.6990364}, reviewed = {1}, author = {Hummen, Ren{\'e} and Shafagh, Hossein and Raza, Shahid and Voigt, Thiemo and Wehrle, Klaus} } @Conference { 2014-hohlfeld-harvester, title = {The Harvester, the Botmaster, and the Spammer: On the Relations Between the Different Actors in the Spam Landscape}, year = {2014}, month = {6}, url = {http://downloads.ohohlfeld.com/paper/harvesters-asiaccs2014.pdf}, web_url = {http://asiaccs2014.nict.go.jp/}, publisher = {ACM}, booktitle = {9th ACM Symposium on Information, Computer and Communications Security}, DOI = {10.1145/2590296.2590302}, reviewed = {1}, author = {Stringhini, Gianluca and Hohlfeld, Oliver and Kruegel, Christopher and Vigna, Giovanni} } @Article { 2013-raza-lithe, title = {Lithe: Lightweight Secure CoAP for the Internet of Things}, journal = {IEEE Sensors Journal}, year = {2013}, month = {10}, volume = {13}, number = {10}, pages = {3711-3720}, keywords = {Internet of Things;operating systems (computers);personal area networks;protocols;security of data;6LoWPAN standard;Contiki operating system;DTLS;Internet of Things;IoT;Lithe;authenticated confidential communication;constrained application protocol;datagram transport layer security;e-health domain;end-to-end security;lightweight secure CoAP;resource-constrained devices;Encoding;Internet;Payloads;Protocols;Security;Sensors;Standards;6LoWPAN;CoAP;CoAPs;DTLS;IoT;security}, tags = {iotsec}, language = {en}, ISSN = {1530-437X}, DOI = {10.1109/JSEN.2013.2277656}, reviewed = {1}, author = {Raza, Shahid and Shafagh, Hossein and Hewage, Kasun and Hummen, Ren{\'e} and Voigt, Thiemo} } @Inproceedings { 2013-wisec-garcia-securing, title = {Securing the IP-based Internet of Things with HIP and DTLS}, year = {2013}, month = {4}, pages = {119--124}, publisher = {ACM}, booktitle = {Proceedings of the 6th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec '13) (short paper)}, ISBN = {978-1-4503-1998-0}, DOI = {10.1145/2462096.2462117}, reviewed = {1}, author = {Garcia-Morchon, Oscar and Keoh, Sye Loong and Kumar, Sandeep S. and Moreno-Sanchez, Pedro and Vidal-Meca, Francisco and Ziegeldorf, Jan Henrik} } @Inproceedings { 2013-pitsac-vidalmeca-hip, title = {HIP security architecture for the IP-based Internet of Things}, year = {2013}, month = {3}, day = {25}, pages = {1331 - 1336}, abstract = {The IP-based Internet of Things refers to the pervasive interactions of smart objects and people enabling new applications by means of IP protocols. An application scenario is a Smart City in which the city infrastructure, cars, and people exchange information to enable new services. IP protocols, such as IPv6, TCP and HTTP will be further complemented by IPv6 over Low powerWireless Personal Area Networks and Constrained Application Protocol currently in development in IETF. Security and privacy are a must for the IP-based IoTs in order to ensure its acceptance. However, mobility, limited bandwidth, and resource-constrained devices pose new challenges and require for a sound and efficient security architecture. In particular, dynamic association of mobile smart objects and the management of keys in large-scale networks remain an open challenge. In this context, we propose a flexible security architecture based on the Host Identity Protocol and Multimedia Internet KEYing protocols allowing for secure network association and key management. HIP - based on asymmetric-key cryptography - ensures unambiguous thing identification, mobility support, as well as a lightweight and secure method for network association. In our solution, HIP is extended with MIKEY capabilities to provide enhanced key management using polynomials, which allow to generate pairwise keys with any node based on its identity. This combination of protocols and crypto-algorithms ensures both strong security and very good performance as shown by our implementation and presents clear advantages compared with other alternatives.}, keywords = {Internet of Things; Security; Network Access; Key Management}, misc2 = {Online}, publisher = {IEEE}, booktitle = {Proceedings of the 27th International Conference on Advanced Information Networking and Applications Workshops (WAINA), 2013}, event_place = {Barcelona, Spain}, event_date = {25.-28.03.2013}, language = {en}, DOI = {10.1109/WAINA.2013.158}, reviewed = {1}, author = {Vidal Meca, Francisco and Ziegeldorf, Jan Henrik and Garcia-Morchon, Oscar and Kumar, Sandeep S. and Keoh, Sye Loong and Moreno-Sanchez, Pedro} } @Inproceedings { 2012-IPIN-Viol-HMM, title = {Hidden Markov Model-based 3D Path-matching using Raytracing-generated Wi-Fi Models}, year = {2012}, month = {11}, day = {13}, pages = {1--10}, url = {fileadmin/papers/2012/2012-11-viol-ipin.pdf}, web_url = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6418873\&tag=1}, misc2 = {Online}, booktitle = {Proceedings of the 2012 International Conference on Indoor Positioning and Indoor Navigation (IPIN), Sydney, Australia}, event_place = {Sydney, Australia}, event_name = {2012 International Conference on Indoor Positioning and Indoor Navigation}, event_date = {November 13--15, 2012}, language = {en}, ISBN = {978-1-4673-1955-3}, DOI = {10.1109/IPIN.2012.6418873}, reviewed = {1}, author = {Viol, Nicolai and Bitsch Link, J{\'o} Agila and Wirtz, Hanno and Rothe, Dirk and Wehrle, Klaus} } @Article { 2012-JLBS-Bitsch-FootPath, title = {Accurate Map-based Indoor Navigation on the Mobile}, journal = {Journal of Location Based Services}, year = {2012}, month = {7}, day = {11}, volume = {7}, number = {1}, pages = {23-43}, abstract = {We present FootPath, a self-contained, map-based indoor navigation system. Using only the accelerometer and the compass readily available in modern smartphones, we accurately localise a user on her route and provide her with turn-by-turn instructions to her destination. To compensate for inaccuracies in step detection and heading estimation, we match the detected steps onto the expected route using sequence alignment algorithms from the field of bioinformatics. As our solution integrates well with OpenStreetMap, it allows painless and cost-efficient collaborative deployment, without the need for additional infrastructure.}, web_url = {http://www.tandfonline.com/doi/abs/10.1080/17489725.2012.692620}, misc2 = {Online}, publisher = {Taylor \& Francis}, address = {Bristol, PA, USA}, language = {en}, ISSN = {1748-9733}, DOI = {10.1080/17489725.2012.692620}, reviewed = {1}, author = {Bitsch Link, J{\'o} Agila and Smith, Paul and Viol, Nicolai and Wehrle, Klaus} } @Inproceedings { 2012-aktas-simutools-FANTASY:FullyAutomaticNetworkEmulationArchitecturewithCross-LayerSupport-conference, title = {FANTASY: Fully Automatic Network Emulation Architecture with Cross-Layer Support}, year = {2012}, month = {3}, day = {19}, pages = {57-64}, tags = {crawler, fantasy}, url = {fileadmin/papers/2012/2012-aktas-simutools-fantasy.pdf}, web_url = {http://dl.acm.org/citation.cfm?id=2263019\&CFID=88550183\&CFTOKEN=31687193}, misc2 = {Online}, publisher = {ICST}, address = {Brussels, Belgium}, booktitle = {Proceedings of the 5th ACM International ICST Conference on Simulation Tools and Techniques (SIMUTools '12), Desenzano del Garda, Italy}, event_place = {Desenzano, Italy}, event_name = {5th ACM International ICST Conference on Simulation Tools and Techniques (SIMUTools '12)}, event_date = {19-23 March, 2012}, language = {en}, ISBN = {978-1-4503-1510-4}, DOI = {10.4108/icst.simutools.2012.247759}, reviewed = {1}, author = {Aktas, Ismet and vom Lehn, Hendrik and Habets, Christoph and Schmidt, Florian and Wehrle, Klaus} } @Inproceedings { 2011-wirtz-kaleidoscope, title = {Cooperative Wi-Fi-Sharing: Encouraging Fair Play}, year = {2011}, month = {12}, day = {14}, tags = {mobile_access}, url = {fileadmin/papers/2011/2011-wirtz-kaleidoscope.pdf}, misc = {Online}, address = {ITU}, booktitle = {Proceedings of the ITU-T Kaleidoscope Event 2011, Cape Town, South Africa}, event_place = {Cape Town, South Africa}, event_name = {ITU-T Kaleidoscope: The fully networked human?}, event_date = {2011-12-12}, language = {en}, ISBN = {978-92-61-13651-2}, reviewed = {1}, author = {Wirtz, Hanno and Hummen, Ren{\'e} and Viol, Nicolai and Heer, Tobias and Lora Gir{\'o}n, M{\'o}nica Alejandra and Wehrle, Klaus} } @Inproceedings { Varj1112:Secure, title = {Secure Resolution of {End-Host} Identifiers for Mobile Clients}, year = {2011}, month = {12}, day = {5}, abstract = {Many efforts of the network research community focus on the introduction ofa new identifier to relieve the IP address from its dual role of end-hostidentifier and routable locator. This identifier-locator split introduces anew identifier between human readable domain names and routable IPaddresses. Mapping between identifiers and locators requires additionalname mapping mechanisms because their relation is not trivial. Despite itspopularity and efficiency, the DNS system is not a perfect choice forperforming this mapping because identifiers are not hierarchicallystructured and mappings are frequently updated by users. In this paper wediscuss the features needed to resolve flat identifiers to locators in asecure manner. In particular, we focus on the features and the performancethat identifier-locator split protocols require from a mapping system. Tothis end, we consider a mapping system for an identifier-locator splitbased mobility solution and evaluate its performance. IndexTerms—Identifier-locator split, Name resolution, Host Identity Protocol,Security, DNS, DHT, OpenDHT}, keywords = {DHT; DNS; Host Identity Protocol; Security; Identifier-locator split; Nameresolution}, url = {fileadmin/papers/2011/2011-varjonen-secure.pdf}, misc2 = {Online}, publisher = {IEEE}, address = {Piscataway, NJ, USA}, booktitle = {IEEE GLOBECOM 2011 - Next Generation Networking Symposium (GC'11 - NGN), Awarded the NGN Best Paper Award}, state = {accepted}, language = {en}, ISBN = {978-1-4244-9268-8}, ISSN = {1930-529X}, reviewed = {1}, author = {Varjonen, Samu and Heer, Tobias and Rimey, Kenneth and Gurtov, Andrei} } @Inproceedings { 2011-ipin-bitsch-footpath-long, title = {FootPath: Accurate Map-based Indoor Navigation Using Smartphones}, year = {2011}, month = {9}, day = {21}, pages = {1--8}, abstract = {We present FootPath, a self-contained, map-based indoor navigation system. Using only the accelerometer and the compass readily available in modern smartphones we accurately localize a user on her route, and provide her with turn-by-turn instructions to her destination. To compensate for inaccuracies in step detection and heading estimation, we match the detected steps onto the expected route using sequence alignment algorithms from the field of bioinformatics. As our solution integrates well with OpenStreetMap, it allows painless and cost-efficient collaborative deployment, without the need for additional infrastructure.}, tags = {footpath}, url = {fileadmin/papers/2011/2011-IPIN-bitsch-footpath-long.pdf}, web_url = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6071934\&tag=1}, misc2 = {Online}, publisher = {IEEE}, booktitle = {Proceedings of the 2011 International Conference on Indoor Positioning and Indoor Navigation (IPIN), Guimaraes, Portugal}, event_place = {Guimar{\~a}es, Portugal}, event_name = {2011 International Conference on Indoor Positioning and Indoor Navigation (IPIN)}, event_date = {21-23 September 2011}, language = {en}, ISBN = {978-1-4577-1803-8}, DOI = {http://dx.doi.org/10.1109/IPIN.2011.6071934}, reviewed = {1}, author = {Bitsch Link, J{\'o} Agila and Smith, Paul and Viol, Nicolai and Wehrle, Klaus} } @Inproceedings { VaegsABW2011, title = {Efficient Power Management Using Out-of-Band Signaling}, year = {2011}, month = {9}, day = {16}, pages = {77-80}, abstract = {A tremendous amount of energy is wasted today, because computing devices are left running all the time even though they are needed only sporadically. Especially in office environments many devices (e.g., printers) are very rarely turned off, because they need to be available from time to time and because it is inconvenient having to switch them on and off manually. Existing solutions, such as Wake-on-LAN (WoL), provide support for managing the power consumption of the network devices remotely using an always-on data channel. However, these solutions are inefficient, because power to the network interface has to be maintained even when the host system is asleep just to ensure remote accessibility. We propose a Wireless Sensor Network (WSN) based out-of-band signaling architecture for network interfaces which minimizes the systems’ power consumption during the large idle periods when nobody is using them. This is done by separating the data and control channels on the Internet-enabled devices using a low-power out-of-band signaling channel based on battery driven, energy scavenging devices. Unlike existing solutions, which only allow parts of the system to go in sleep modes, our architecture allows the whole system, including the main power supply, to be shut down. Our initial investigation indicates a significant reduction in energy consumption of devices during idle times compared to the existing in-band signaling mechanisms such as WoL.}, keywords = {Energy Saving, Wireless Sensor Network, Out-of-Band Signalling}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2011/2011-vaegs-fgsn-ecocom.pdf}, misc2 = {Online}, booktitle = {Proceedings of the 10th GI/ITG KuVS Fachgespr{\"a}ch Drahtlose Sensornetze (FGSN), Paderborn, Germany}, institution = {RWTH Aachen University}, event_place = {Paderborn, Germany}, event_name = {10th GI/ITG KuVS Fachgespr{\"a}ch Drahtlose Sensornetze (FGSN11)}, event_date = {September 15-16, 2011}, language = {en}, reviewed = {1}, author = {Vaegs, Tobias and Alizai, Muhammad Hamad and Bitsch Link, J{\'o} Agila and Wehrle, Klaus} } @Inproceedings { 2011-wintech-alizai-tinywifi, title = {TinyWifi: Making Network Protocol Evaluation Portable Across Multiple Phy-Link Layers}, year = {2011}, month = {9}, pages = {19-27}, tags = {tinywifi}, url = {fileadmin/papers/2011/2010-09-tinywifi-alizai-wintech.pdf}, misc2 = {Online}, publisher = {ACM}, address = {New York, NY, USA}, booktitle = {Proceedings of the Sixth ACM International Workshop on Wireless Network Testbeds, Experimental evaluation and Characterization (WiNTECH ), Las Vegas, NV, USA}, event_place = {Las Vegas, NV, USA}, event_name = {The 17th Annual International Conference on Mobile Computing and Networking}, event_date = {September 2011}, language = {en}, ISBN = {978-1-4503-0867-0}, DOI = {10.1145/2030718.2030725}, reviewed = {1}, author = {Alizai, Muhammad Hamad and Wirtz, Hanno and Kirchen, Bernhard and Vaegs, Tobias and Gnawali, Omprakash and Wehrle, Klaus} } @Inproceedings { 2011-hummen-pisa-demo, title = {PISA-SA - Security and Mobility in a Collaborative Muni-Fi (Demo Abstract)}, year = {2011}, month = {6}, day = {15}, volume = {15}, pages = {35--36}, tags = {mobile_access}, url = {fileadmin/papers/2011/2011-hummen-wisec-pisa-sa-demo.pdf}, misc2 = {Online}, publisher = {ACM}, address = {New York, NY, USA}, booktitle = {Proceedings of the fourth ACM Conference on Wireless Network Security, Hamburg, Germany}, event_place = {Hamburg, Germany}, event_name = {Wireless Network Security 2011 (WiSec 2011)}, language = {en}, ISSN = {1559-1662}, DOI = {10.1145/2073290.2073297}, reviewed = {1}, author = {Hummen, Ren{\'e} and Wirtz, Hanno and Viol, Nicolai and Heer, Tobias and Wehrle, Klaus} } @Techreport { rfc6253, title = {{Host Identity Protocol Certificates}}, year = {2011}, month = {5}, number = {rfc6253}, abstract = {The Certificate (CERT) parameter is a container for digital certificates. It is used for carrying these certificates in Host Identity Protocol (HIP) control packets. This document specifies the CERT parameter and the error signaling in case of a failed verification. Additionally, this document specifies the representations of Host Identity Tags in X.509 version 3 (v3) and Simple Public Key Infrastructure (SPKI) certificates. The concrete use of certificates, including how certificates are obtained, requested, and which actions are taken upon successful or failed verification, is specific to the scenario in which the certificates are used. Hence, the definition of these scenario- specific aspects is left to the documents that use the CERT parameter.}, tags = {mobile_access}, url = {http://www.ietf.org/rfc/rfc6253.txt}, publisher = {IETF}, howpublished = {RFC 6253 (Experimental)}, series = {Request for Comments}, organization = {Internet Engineering Task Force}, institution = {Internet Engineering Task Force}, type = {Request For Commments (Experimental Standard)}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Inproceedings { 2011-ipsn-alizai-pad, title = {Probabilistic Addressing: Stable Addresses in Unstable Wireless Networks}, year = {2011}, month = {4}, url = {fileadmin/papers/2011/2011-ipsn-alizai-pad.pdf}, misc2 = {Online}, publisher = {ACM}, address = {New York, NY, USA}, booktitle = {Proceedings of the 10th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN 2011), Chicago, IL, USA}, event_place = {Chicago, IL, USA}, language = {en}, ISBN = {978-1-60558-988-6}, reviewed = {1}, author = {Alizai, Muhammad Hamad and Vaegs, Tobias and Landsiedel, Olaf and G{\"o}tz, Stefan and Bitsch Link, J{\'o} Agila and Wehrle, Klaus} } @Inproceedings { 2011-nsdi-slicetime-weingaertner, title = {SliceTime: A platform for scalable and accurate network emulation}, year = {2011}, month = {3}, day = {30}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2011/2011-weingaertner-nsdi-slicetime-camera_ready_14P.pdf}, misc2 = {Online}, publisher = {USENIX}, address = {Berkeley, CA, USA}, booktitle = {Proceedings of the 8th USENIX Symposium on Networked Systems Design and Implementation (NSDI '11), Boston, MA, USA}, event_place = {Boston, Massachusetts}, language = {en}, reviewed = {1}, author = {Weingaertner, Elias and Schmidt, Florian and vom Lehn, Hendrik and Heer, Tobias and Wehrle, Klaus} } @Inproceedings { OttHLVK2011, title = {Floating Content: Information Sharing in Urban Areas}, year = {2011}, month = {3}, day = {21}, abstract = {Content sharing using personal web pages, blogs, or online social networks is a common means for people to maintain contact with their friends, colleagues, and acquaintances. While such means are essential to overcome distances, using infrastructure services for location-based services may not be desirable. In this paper, we analyze a fully distributed variant of an ephemeral content sharing service, solely dependent on the mobile devices in the vicinity using principles of opportunistic networking. The net result is a best effort service for floating content in which: 1) information dissemination is geographically limited; 2) the lifetime and spreading of information depends on interested nodes being available; 3) content can only be created and distributed locally; and 4) content can only be added, but not explicitly deleted. First we present our system design and summarize its analytical modeling. Then we perform extensive evaluation for a map-based mobility model in downtown Helsinki to assess the operational range for floating content, which, at the same time also validate the analytical results obtained for a more abstract model of the system.}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2011/2011-percom-vaegs-floatingcontent.pdf}, misc2 = {Online}, publisher = {IEEE}, address = {Piscataway, NJ, USA}, booktitle = {Proceedings of the 9th IEEE International Conference on Pervasive Computing and Communications (PerCom 2011), Seattle, WA, USA}, event_place = {Seattle, USA}, event_name = {9th IEEE International Conference on Pervasive Computing and Communications}, event_date = {March 21 - 25, 2011}, language = {en}, ISBN = {978-1-4244-9529-0}, reviewed = {1}, author = {Ott, J{\"o}rg and Hyyti{\"a}, Esa and Lassila, Pasi and Vaegs, Tobias and Kangasharju, Jussi} } @Inproceedings { 2011-weingaertner-device-driver-enabled, title = {Device-driver enabled Wireless Network Emulation}, year = {2011}, month = {3}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2011/2011-weingaertner-simutools-wifi-emu_camera-ready.pdf}, misc2 = {Online}, publisher = {ICST}, address = {Brussels, Belgium}, chapter = {Proceedings ot the4th International ICST Conference on Simulation Tools and Techniques (SIMUTools 2011)}, booktitle = {Proceedings of the 4th International ICST Conference on Simulation Tools and Techniques (SIMUTools 2011), Barcelona, Spain}, event_place = {Barcelona, Spain}, state = {accepted}, language = {en}, ISBN = {978-1-936968-00-8}, reviewed = {1}, author = {Weingaertner, Elias and vom Lehn, Hendrik and Wehrle, Klaus} } @Poster { 2011-03-vomLehn-NSDI-PrivacyOnWeb, title = {Work in Progress: Uncovering the Privacy Implications of Web Usage [Poster]}, year = {2011}, month = {3}, note = {poster and abstract}, url = {fileadmin/papers/2011/2011-03-vomLehn-NSDI-PrivacyOnWeb.pdf}, misc2 = {Online}, booktitle = {8th USENIX Symposium on Networked Systems Design and Implementation (NSDI '11), Boston, MA, USA}, organization = {Usenix}, event_place = {Boston, MA, USA}, event_name = {NSDI}, event_date = {March 30 – April 1, 2011}, state = {accepted}, language = {en}, reviewed = {1}, author = {vom Lehn, Hendrik and Bitsch Link, J{\'o} Agila and Wehrle, Klaus} } @Techreport { draft-ietf-hip-cert-08, title = {{Host Identity Protocol Certificates}}, year = {2011}, month = {1}, volume = {1}, number = {draft-ietf-hip-cert-08.txt}, note = {{expires: July 22, 2011 (work in progress)}}, url = {http://tools.ietf.org/html/draft-ietf-hip-cert-08}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-ietf-hip-cert-08}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Techreport { draft-ietf-hip-cert-07, title = {{Host Identity Protocol Certificates}}, year = {2011}, month = {1}, volume = {1}, number = {draft-ietf-hip-cert-07.txt}, note = {{expires: July 16, 2011 (work in progress)}}, url = {http://tools.ietf.org/html/draft-ietf-hip-cert-07}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-ietf-hip-cert-07}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Techreport { draft-ietf-hip-cert-09, title = {{Host Identity Protocol Certificates}}, year = {2011}, month = {1}, volume = {1}, number = {draft-ietf-hip-cert-09.txt}, pages = {1}, note = {{expires: July 22, 2011 (work in progress)}}, url = {http://tools.ietf.org/html/draft-ietf-hip-cert-09}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-ietf-hip-cert-09}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Techreport { draft-ietf-hip-cert-06, title = {{Host Identity Protocol Certificates}}, year = {2010}, month = {11}, volume = {1}, number = {draft-ietf-hip-cert-06.txt}, note = {{expires: May 23, 2011 (work in progress)}}, url = {http://tools.ietf.org/html/draft-ietf-hip-cert-06}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-ietf-hip-cert-06}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Techreport { draft-ietf-hip-cert-05, title = {{Host Identity Protocol Certificates}}, year = {2010}, month = {11}, volume = {1}, number = {draft-ietf-hip-cert-05.txt}, note = {{expires: May 12, 2011 (work in progress)}}, url = {http://tools.ietf.org/html/draft-ietf-hip-cert-05}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-ietf-hip-cert-05}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Techreport { draft-ietf-hip-cert-04, title = {{Host Identity Protocol Certificates}}, year = {2010}, month = {9}, volume = {1}, number = {draft-ietf-hip-cert-04.txt}, note = {{expires: March 27, 2011 (work in progress)}}, url = {http://tools.ietf.org/html/draft-ietf-hip-cert-04}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-ietf-hip-cert-04}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Inproceedings { DBLP:conf/winsys/ChristophKST10a, title = {Automatic Context Detection of a Mobile user}, year = {2010}, month = {7}, pages = {189-194}, misc2 = {Print}, editor = {Rafael F. S. Caldeirinha and Mohammad S. Obaidat}, publisher = {SciTePress}, booktitle = {WINSYS 2010 - Proceedings of the International Conference on Wireless Information Networks and Systems, Athens, Greece, WINSYS is part of ICETE - The International Joint Conference on e-Business and Telecommunications}, language = {en}, ISBN = {978-989-8425-24-9}, author = {Christoph, Uta and Krempels, Karl-Heinz and von St{\"u}lpnagel, Janno and Terwelp, Christoph} } @Inproceedings { 201004vaegsieeestudentpad, title = {Probabilistic Addressing in Wireless Networks}, year = {2010}, month = {5}, day = {20}, pages = {5-8}, abstract = {The lack of permanent network infrastructure and often unplanned deployments in many multihop wireless communication scenarios restrict nodes to determine their own addresses based on the underlying connectivity in the network. However, due to unreliable connectivity and rapidly changing link qualities in wireless networks, establishing uniform addressing and stable point-to-point routing is challenging. In this paper, we present Statistical Vector Routing (SVR), a virtual coordinates based addressing and routing mechanism that efficiently deals with dynamic communication links in wireless networks. It assigns stable probabilistic addresses to nodes without the need to pessimistically estimate links over longer periods of time. The routing metric predicts the current location of a node in its address distribution. Our prototype implementation over real testbeds indicates that SVR, when compared to current approaches, achieves 3 times more stable addressing, reduces the magnitude of change in addresses by 2-10 times, and minimizes the hop distance and transmissions in the network by 10-15\%.}, tags = {wld}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2010/2010-vaegs-wehrle-probabilistic_addressing.pdf}, misc2 = {Print}, publisher = {Hamburg University of Technology}, address = {Hamburg, Germany}, booktitle = {Proceedings of the 2nd IEEE Student Conference, Hamburg University of Technology, Hamburg, Germany}, event_place = {Hamburg, Germany}, event_name = {2nd IEEE Student Conference, Hamburg University of Technology}, event_date = {May 20-21, 2010}, language = {en}, author = {Vaegs, Tobias and Alizai, Muhammad Hamad and Wehrle, Klaus} } @Inproceedings { 20104-IPSN-alizai-svr, title = {Poster Abstract: Statistical Vector based Point-to-Point Routing in Wireless Networks}, year = {2010}, month = {4}, day = {12}, pages = {366-367}, abstract = {We present Statistical Vector Routing (SVR), a protocol that efficiently deals with communication link dynamics in wireless networks. It assigns virtual coordinates to nodes based on the statistical distribution of their distance from a small set of beacons. The distance metric predicts the current location of a node in its address distribution. Our initial results from a prototype implementation over real testbeds demonstrate the feasibility of SVR.}, tags = {wld}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2010/2010-alizai-ipsn-pad.pdf}, web_url = {http://portal.acm.org/citation.cfm?id=1791257}, misc2 = {Print}, publisher = {ACM}, address = {New York, NY, USA}, booktitle = {Proceedings of the 9th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN 2010), Stockholm, Sweden}, event_place = {Stockholm, Sweden}, event_name = {9th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN 2010)}, event_date = {April 12-16, 2010}, language = {en}, ISBN = {978-1-60558-988-6}, reviewed = {1}, author = {Alizai, Muhammad Hamad and Vaegs, Tobias and Landsiedel, Olaf and Sasnauskas, Raimondas and Wehrle, Klaus} } @Inproceedings { 201004vaegsjscsvr, title = {Poster: A Statistical Vector based Routing Protocol for Wireless Networks}, year = {2010}, month = {4}, day = {7}, pages = {279-280}, abstract = {We present Statistical Vector Routing (SVR), a protocol that efficiently deals with the dynamics shown by communication links of wireless networks. It assigns virtual coordinates to nodes based on the statistical distribution of their distance from a small set of beacons. The distance metric predicts the current location of a node in its address distribution. Our initial results from a prototype implementation over real testbeds demonstrate the feasibility of SVR.}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2010/2010-alizai-ipsn-pad.pdf}, misc = {Poster}, misc2 = {Print}, editor = {Hans K. Kaiser and Raimund Kirner}, publisher = {Vienna University of Technology}, address = {Karlsplatz 13, 1040 Vienna, Austria}, booktitle = {Proceedings of the Junior Scientist Conference 2010, Vienna, Austria}, event_place = {Vienna, Austria}, event_name = {The Junior Scientist Conference}, event_date = {April 7-9, 2010}, language = {en}, ISBN = {978-3-200-01797-9}, author = {Vaegs, Tobias and Wehrle, Klaus} } @Inproceedings { 2010-percomws-heer-munifi, title = {Collaborative Municipal Wi-Fi Networks - Challenges and Opportunities}, journal = {Proceedings of the Sixth IEEE PerCom Workshop on Pervasive Wireless Networking (PWN 2010), IEEE.}, year = {2010}, month = {4}, day = {2}, volume = {1}, pages = {588 - 593}, abstract = {Municipal Wi-Fi networks aim at providing Internet access and selected mobile network services to citizens, travelers, and civil servants. The goals of these networks are to bridge the digital divide, stimulate innovation, support economic growth, and increase city operations efficiency. While establishing such urban networks is financially challenging for municipalities, Wi-Fi-sharing communities accomplish good coverage and ubiquitous Internet access by capitalizing on the dense deployment of private access points in urban residential areas. By combining Wi-Fi communities and municipal Wi-Fi, a collaborative municipal Wi-Fi system promises cheap and ubiquitous access to mobile city services. However, the differences in intent, philosophy, and technical realization between community and municipal Wi-Fi networks prevent a straight-forward combination of both approaches. In this paper, we highlight the conceptual and technical challenges that need to be solved to create collaborative municipal Wi-Fi networks.}, tags = {mobile_access}, url = {http://www.comsys.rwth-aachen.de/fileadmin/papers/2010/2010-heer-percomws-collaborative-municipal-wi-fi.pdf}, misc2 = {Print}, publisher = {IEEE Press}, address = {Washington, DC, USA}, booktitle = {Proceedings of the Sixth IEEE PerCom Workshop on Pervasive Wireless Networking (PWN 2010), Mannheim, Germany.}, event_place = {Mannheim, Germany}, event_name = {Sixth IEEE PerCom Workshop on Pervasive Wireless Networking (PWN 2010)}, event_date = {April 02, 2010}, language = {en}, ISBN = {978-1-4244-6605-4}, DOI = {10.1109/PERCOMW.2010.5470505}, author = {Heer, Tobias and Hummen, Ren{\'e} and Viol, Nicolai and Wirtz, Hanno and G{\"o}tz, Stefan and Wehrle, Klaus} } @Techreport { draft-ietf-hip-cert-03, title = {{Host Identity Protocol Certificates}}, year = {2010}, month = {4}, volume = {1}, number = {draft-ietf-hip-cert-03.txt}, note = {{expires: October 30, 2010 (work in progress)}}, url = {http://tools.ietf.org/html/draft-ietf-hip-cert-03}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-ietf-hip-cert-03}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Inproceedings { inproceedingsreference201001227195395138, title = {Iterative Source-Channel Decoding with Cross-Layer Support for Wireless VoIP}, year = {2010}, month = {1}, day = {18}, volume = {1}, pages = {1-6}, abstract = {This paper presents a cross-layer approach for iterative source-channel decoding (ISCD) in wireless VoIP networks. The novelty of the proposed method is the incorporation of both, speech bits as well as protocol header bits, into the ISCD process. The header bits take the role of pilot bits having perfect reliability. These bits are distributed over the frame as strong supporting points for the MAP decoder which results in a significant enhancement of the output speech quality compared to the benchmark scheme using ISCD for speech only. For this approach, we exploit new cross-layer concepts that support the direct communication between non-adjacent layers. These concepts enable the iterative exchange of extrinsic information between the source decoder located on the application layer and the channel decoder located on the physical layer. This technique can also be applied to audio and video transmission.}, tags = {refector}, url = {fileadmin/papers/2010/2010-01-scc-breddermann-iscd.pdf}, misc2 = {CD-ROM / DVD-ROM}, editor = {Rudolf Mathar, Christoph Ruland}, publisher = {VDE Verlag}, address = {Berlin, Germany}, series = {Proceedings of International ITG Conference on Source and Channel Coding}, booktitle = {Proceedings of International ITG Conference on Source and Channel Coding}, organization = {ITG}, event_place = {Siegen}, event_name = {International ITG Conference on Source and Channel Coding 2010}, event_date = {January 18-21, 2010}, language = {en}, ISBN = {978-3-8007-3211-1}, reviewed = {1}, author = {Breddermann, Tobias and Lueders, Helge and Vary, Peter and Aktas, Ismet and Schmidt, Florian} } @Article { VaegsDHH2010, title = {Learning by gaming: facts and myths}, journal = {International Journal of Technology Enhanced Learning (IJTEL)}, year = {2010}, volume = {2}, number = {1/2}, pages = {21-40}, abstract = {Gaming has undergone a transition from a niche hobby to a part of everyday culture. This transition, along with the advance in the use of the internet, has created a new kind of social environment, commonly known as virtual life. This paper presents the survey results of over 1000 gamers worldwide, in which they tell us how gaming affected their lives – both virtual and real – with regard to their career, relationships and social life. The analysis of the answers disproves common stereotypes about gamers, shows areas where gaming can very well be beneficial and where there are still problems.}, keywords = {video games, online games, learning by playing, soft skills, transferable skills, motivation, conflicts, social skills, careers, relationships, communities, technical competence, gaming, virtual life, social life, gamers}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2010/2010-vaegs-JTEL-Gaming.pdf}, editor = {Martin Wolpers}, publisher = {Inderscience Publishers}, address = {Geneva, SWITZERLAND}, language = {en}, ISSN = {1753-5255}, DOI = {10.1504/IJTEL.2010.031258}, reviewed = {1}, author = {Vaegs, Tobias and Dugosija, Darko and Hackenbracht, Stephan and Hannemann, Anna} } @Inproceedings { 200912BitschSimBetAge, title = {SimBetAge: Dealing with Change in Social Networks for Pocket Switched Networks}, year = {2009}, month = {12}, day = {1}, pages = {13--18}, abstract = {In this paper, we present SimBetAge, a delay and disruption tolerant routing protocol for highly dynamic socially structured mobile networks. We exploit the lightweight and egocentric scheme of SimBet routing while at the same time taking the strength and the gradual aging of social relations into account and thereby increase the performance by one order of magnitude, especially in evolving network structures. We explore the model of similarity and betweenness over weighted graphs, and present a simulation on realistic traces from previous experiments, comparing our approach to the original SimBet, Epidemic Routing and Prophet.}, tags = {RatPack}, url = {fileadmin/papers/2009/2009-12-Bitsch-SimBetAge.pdf}, web_url = {http://portal.acm.org/citation.cfm?id=1659029.1659034\&coll=DL\&dl=GUIDE\&CFID=6806120\&CFTOKEN=29162094}, web_url2 = {http://conferences.sigcomm.org/co-next/2009/workshops/unet/papers/Link.pdf}, misc2 = {Online}, editor = {Paulo Mendes, Oliver Marc{\'e}}, publisher = {ACM}, address = {New York City, NY, USA}, series = {U-NET '09}, booktitle = {Proceedings of the 1st ACM workshop on User-provided networking: challenges and opportunities, Rome, Italy}, organization = {ACM}, event_place = {Rome, Italy}, event_name = {1st ACM workshop on User-provided networking: challenges and opportunities}, event_date = {1 Dec. 2009}, language = {en}, ISBN = {978-1-60558-750-9}, DOI = {http://doi.acm.org/10.1145/1659029.1659034}, reviewed = {1}, author = {Bitsch Link, J{\'o} Agila and Viol, Nicolai and Goliath, Andr{\'e} and Wehrle, Klaus} } @Techreport { draft-ietf-hip-cert-02, title = {{Host Identity Protocol Certificates}}, year = {2009}, month = {10}, volume = {1}, number = {draft-ietf-hip-cert-02.txt}, note = {{expires: April 29, 2010 (work in progress)}}, url = {http://tools.ietf.org/html/draft-ietf-hip-cert-02}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-ietf-hip-cert-02}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Inproceedings { 200907BitschMOBIQUITOUS09SimBetAge, title = {SimBetAge: Utilizing Temporal Changes in Social Networks for Delay/Disconnection Tolerant Networking}, year = {2009}, month = {7}, day = {13}, pages = {1--2}, abstract = {In this paper, we present SimBetAge, an extension to SimBet taking into account the gradual aging of connections in social networks which thereby increases the performance by an order of magnitude, especially in evolving network structures. For this purpose, we redefine similarity and betweenness to make use of weighted social network graphs.}, note = {poster and abstract}, tags = {RatPack}, url = {fileadmin/papers/2009/2009-07-Bitsch-Mobiquitous09-SimBetAge.pdf}, web_url2 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5326363}, misc2 = {Online}, publisher = {IEEE}, address = {New York City, NY, USA}, booktitle = {Proceedings of the 6th Annual International Conference on Mobile and Ubiquitous Systems (MobiQuitous 2009), Toronto, ON, Canada}, organization = {ICST/IEEE}, event_place = {Toronto, ON, Canada}, event_name = {6th Annual International Conference on Mobile and Ubiquitous Systems (MobiQuitous 2009)}, event_date = {July 13-16, 2009}, language = {en}, ISBN = {978-963-9799-59-2}, DOI = {10.4108/ICST.MOBIQUITOUS2009.7017}, reviewed = {1}, author = {Bitsch Link, J{\'o} Agila and Viol, Nicolai and Goliath, Andr{\'e} and Wehrle, Klaus} } @Techreport { draft-ietf-hip-cert-01, title = {{Host Identity Protocol Certificates}}, year = {2009}, month = {6}, volume = {1}, number = {draft-ietf-hip-cert-01.txt}, note = {{expires: January 2, 2010 (work in progress)}}, url = {http://tools.ietf.org/html/draft-ietf-hip-cert-01}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-ietf-hip-cert-01}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Proceedings { 2009-Weingaertner-ICC-NetworkSimulator-Comparison, title = {A performance comparison of recent network simulators}, year = {2009}, abstract = {A widespread methodology for performance analysis in the field of communication systems engineering is network simulation. While ns-2 has established itself as virtually the standard network simulation tool, other network simulators have gained more and more attention during the last years. In this paper, we briefly survey new developments in the field of network simulation and conduct a performance comparison study by implementing an identical simulation set-up in five simulators, namely ns-2, OMNet++, ns-3, SimPy and JiST/SWANS. Our results reveal large differences according to both run-time performance and memory usage.}, url = {http://www.comsys.rwth-aachen.de/fileadmin/papers/2009/2009-weingaertner-simulator_comparison.pdf}, misc2 = {Print}, publisher = {IEEE}, booktitle = {Proceedings of the IEEE International Conference on Communications 2009 (ICC 2009)}, event_place = {Dresden, Germany}, language = {en}, reviewed = {1}, author = {Weingaertner, Elias and vom Lehn, Hendrik and Wehrle, Klaus} } @Techreport { 2009-heer-draft-service-id, title = {Service Identifiers for HIP}, year = {2009}, number = {draft-heer-hip-service-00}, abstract = {The Host Identity Protocol is a signaling protocol for secure communication, mobility, and multihoming that introduces a cryptographic namespace. This document specifies an extension for HIP that enables HIP end-hosts and HIP-aware middleboxes to announce services to HIP hosts during a HIP Base EXchange (BEX) or HIP update. Service providers are able to specify the type and requirements of a service; clients can then decide to agree on the terms of service. This allows the service provider to verify the accordance of the client with the service conditions while the client is able to verify the authenticity of the used service.}, note = {Work in progress}, institution = {Internet Engineering Task Force}, type = {Internet-Draft}, author = {Heer, Tobias and Varjonen, Samu and Wirtz, Hanno} } @Conference { 200810riechelcncerco, title = {Range Queries and Load Balancing in a Hierarchically Structured P2P System}, year = {2008}, month = {10}, day = {14}, pages = {28-35}, abstract = {Structured Peer-to-Peer (P2P) systems are highly scalable, self-organizing, and support efficient lookups. Furthermore, Distributed Hash Tables (DHTs), due to their features, are used more and more for file-sharing and content distribution applications. However, a major weakness of traditional DHTs is the search for stored content, as data is assigned to nodes based on hash functions, and the very nature of hash tables allows only exact pattern matches. We present Cerco, a solution for the problem of range queries by using the principles of order-preserving DHTs and a hierarchically structured P2P approach. To guarantee an efficient routing and load balancing, Cerco uses a dynamic hierarchy of DHTs by creating subrings on demand and two explicit load balancing strategies. Our evaluation shows that Cerco is able to achieve the goals of supporting range queries, logarithmic-hop routing, and efficient load balancing.}, affiliation = {RWTH Aachen University - Distributed Systems Group}, url = {http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?isnumber=4664131\&arnumber=4664148\&count=180\&index=16}, web_url = {http://web.informatik.uni-bonn.de/IV/Mitarbeiter/matthew/Mirror_LCN2008_Website/www.ieeelcn.org/}, misc2 = {Print}, publisher = {IEEE Press}, booktitle = {Proceedings of 33rd Annual IEEE Conference on Local Computer Networks (LCN 2008)}, organization = {IEEE}, event_place = {Montreal, Canada}, event_name = {33rd Annual IEEE Conference on Local Computer Networks (LCN 2008)}, event_date = {14-17 Oct. 2008}, language = {en}, ISBN = {978-1-4244-2412-2}, DOI = {10.1109/LCN.2008.4664148}, reviewed = {1}, author = {Rieche, Simon and Vinh, Bui The and Wehrle, Klaus} } @Techreport { draft-ietf-hip-cert-00, title = {{Host Identity Protocol Certificates}}, year = {2008}, month = {10}, volume = {1}, number = {draft-ietf-hip-cert-00.txt}, note = {{expires: January 2, 2010 (work in progress)}}, url = {http://tools.ietf.org/html/draft-ietf-hip-cert-00}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-ietf-hip-cert-00}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Inproceedings { DugosijaEHVHM2008, title = {Online Gaming as Tool for Career Development}, year = {2008}, month = {9}, day = {16}, volume = {386}, abstract = {Gaming has undergone a transition from a niche hobby to a part of everyday culture, with the most prominent examples of professional gaming in Korea and the success of World of Warcraft. This transition alongside with the advance of use of the Internet has created a new kind of social environment, commonly known as virtual life. This paper presents an excerpt of the results of a survey investigating this environment with particular regard to the interaction between gaming and career, relationships as well as social groups. “Man only plays when in the full meaning of the word he is a man, and he is only completely a man when he plays. ” Schiller 1}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2008/2008-steg-vaegs-gaming.pdf}, web_url = {http://www.slideshare.net/vaegs/online-gaming-as-tool-for-career-development-presentation}, editor = {Ralf Klamma, Nalin Sharda, Baltasar Fern{\'a}ndez-Manj{\'o}n, Harald Kosch and Marc Spaniol}, series = {CEUR Workshop Proceedings}, booktitle = {Proceedings of the First International Workshop on Story-Telling and Educational Games (STEG'08)}, event_place = {Maastricht School of Management, Maastricht, The Netherlands}, event_name = {First International Workshop on Story-Telling and Educational Games (STEG'08)}, event_date = {September 16, 2008}, language = {en}, author = {Dugosija, Darko and Efe, Vadi and Hackenbracht, Stephan and Vaegs, Tobias and Hannemann, Anna} } @Techreport { draft-varjonen-hip-cert-01, title = {{Host Identity Protocol Certificates}}, year = {2008}, month = {7}, volume = {1}, number = {draft-varjonen-hip-cert-01.txt}, note = {{expires: January 15, 2009 (work in progress)}}, url = {http://tools.ietf.org/html/draft-varjonen-hip-cert-01}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-varjonen-hip-cert-01}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, reviewed = {1}, author = {Heer, Tobias and Varjonen, Samu} } @Techreport { draft-varjonen-hip-cert-00, title = {{Host Identity Protocol Certificates}}, year = {2008}, month = {2}, volume = {1}, number = {draft-varjonen-hip-cert-01.txt}, note = {{expires: August 21, 2008 (work in progress)}}, url = {http://tools.ietf.org/html/draft-varjonen-hip-cert-00}, misc2 = {Online}, publisher = {{IETF Trust}}, howpublished = {An online version is available at: http://tools.ietf.org/html/draft-varjonen-hip-cert-01}, series = {Internet Drafts}, organization = {{Internet Engineering Task Force}}, institution = {Internet Engineering Task Force}, language = {en}, author = {Heer, Tobias and Varjonen, Samu} } @Techreport { 200807VOMLEHNAIB200816NetworkSimulatorComparison, title = {Comparing recent network simulators: A performance evaluation study}, journal = {Aachener Informatik Berichte}, year = {2008}, volume = {2008-16}, number = {AIB 2008-16}, pages = {1-28}, abstract = {Ranging from the development of new protocols to validating analytical performance metrics, network simulation is the most prevalent methodology in the field of computer network research. While the well known ns-2 toolkit has established itself as the quasi standard for network simulation, the successors are on their way. In this paper, we first survey recent contributions in the field of network simulation tools as well as related aspects such as parallel network simulation. Moreover, we present preliminary results which compare the resource demands for ns-3, JiST, SimPy and OMNeT++ by implementing the identical simulation scenario in all these network simulation tools.}, url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2008/AIB-2008-16.pdf}, misc2 = {Online}, address = {Ahornstr. 55, Aachen, Germany}, institution = {RWTH Aachen University}, type = {Technical Report}, ISSN = {0935-3232}, author = {vom Lehn, Hendrik and Weingaertner, Elias and Wehrle, Klaus} } @Techreport { 2008-heer-draft-cert-2, title = {HIP Certificates (Version 0)}, year = {2008}, abstract = {This document specifies a certificate parameter called CERT for the Host Identity Protocol (HIP). The CERT parameter is a container for Simple Public Key Infrastructure (SPKI) and X.509 certificates. It is used for carrying these certificates in HIP control messages. Additionally, this document specifies the representations of Host Identity Tags in SPKI certificates.}, note = {Work in progress}, institution = {Internet Engineering Task Force}, type = {Internet-Draft}, author = {Varjonen, Samu and Heer, Tobias} } @Techreport { 2008-heer-draft-cert, title = {HIP Certificates (Version 1)}, year = {2008}, abstract = {This document specifies a certificate parameter called CERT for the Host Identity Protocol (HIP). The CERT parameter is a container for Simple Public Key Infrastructure (SPKI) and X.509 certificates. It is used for carrying these certificates in HIP control messages. Additionally, this document specifies the representations of Host Identity Tags in SPKI certificates.}, note = {draft-varjonen-hip-cert-01.txt. Work in progress.}, institution = {Internet Engineering Task Force}, type = {Internet-Draft}, author = {Varjonen, Samu and Heer, Tobias} }