Auflistung nach Schlagwort "Decentralization"
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- KonferenzbeitragGRAIN: Truly Privacy-friendly and Self-sovereign Trust Establishment with GNS and TRAIN(Open Identity Summit 2024, 2024) Schanzenbach, Martin; Nadler, Sebastian; Johnson Jeyakumar, Isaac HendersonRobust and secure trust establishment is an open problem in the domain of self-sovereign identities (SSI). The TRAIN [KR21] concept proposes to leverage the security guarantees and trust anchor of the DNS to publish and resolve pointers to trust lists from DNS. While the DNS is a corner stone of the Internet, its continued use is primarily a consequence of inertia due to its crucial function as the address discovery system for existing Internet services. Research and development in the area of SSI is — for the most part — green field. The choice of DNS as a core building block appears fainthearted given its open security issues. Recently, the IETF paved the way to experiment with alternative name systems in real world deployments by reserving the special-use top-level domain “.alt” in the domain name space [KH23]. This allows us to use alternative name systems such as the GNU Name System (GNS) [SGF23a] without intruding into the domain name space reserved for DNS. In this paper, we show how we can use the GNS as a drop-in replacement for DNS in TRAIN. We show how TRAIN-over-GNS (GRAIN) can deliver security and privacy improvements the security concept of TRAIN-over DNS and show that it is practically feasible with limited modifications of existing software stacks.
- ZeitschriftenartikelProcess Modeling in Decentralized Organizations Utilizing Blockchain Consensus(Enterprise Modelling and Information Systems Architectures (EMISAJ) – International Journal of Conceptual Modeling: Vol. 15, Nr. 13, 2020) Härer, FelixBlockchain technologies allow for multiple organizations, individuals, and software to become part of a decentralized network where they can reach consensus on the state of the system including all data stored. Due to the ability of reaching consensus even among untrusted actors, the idea of decentralized organizations has been proposed, where both the system components as well as their coordination are distributed. Given such a system of distributed actors, the problem of decentralized coordination for following common goals and planning becomes apparent. This paper addresses the decentralized coordination problem by means of a blockchain-based approach that uses conceptual modeling to reach consensus in decentralized organizations. With a unified view on the processes and instances of distributed actors, the aim is a decentralized planning and execution through models. For this purpose, an existing approach for decentralized process modeling and instance tracking is applied and extended with the possibility for actors to form consensus on an organizational level through blockchain transactions.
- KonferenzbeitragTowards the decentralized coordination of multiple self-adaptive systems(Software Engineering 2024 (SE 2024), 2024) Dragan, Paul-Andrei; Metzger, Andreas; Pohl, Klaus