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Auflistung nach Autor:in "Vargas, Juan"

1 - 3 von 3
  • Konferenzbeitrag
    Open Identity Summit 2023 - Complete proceedings
    (Open Identity Summit 2023, 2023) Chadwick, David W.; Kubach, Michael; Sette, Ioram; Johnson Jeyakumar, Isaac Henderson; Bochnia, Ricardo; Richter, Daniel; Anke, Jürgen; Sellung, Rachelle; Kubach, Michael; Otto, Sarah; Meisel, Michael; Fernet, Laouen; Mödersheim, Sebastian; Krauß, Anna-Magdalena; Kostic, Sandra; Sellung, Rachelle A.; Pöhn, Daniela; Grabatin, Michael; Hommel, Wolfgang; Kubach, Michael; Henderson, Isaac; Bithin, Alangot; Dimitrakos, Theo; Vargas, Juan; Winterstetter, Matthias; Krontiris, Ioannis; Schwalm, Steffen; Fuxen, Philipp; Hackenberg, Rudolf; Heinl, Michael P.; Ross, Mirko; Roßnagel, Heiko; Schunck, Christian H.; Yahalom, Raphael; Ruff, Christopher; Benthien, Benedict; Orlowski, Alexander; Astfalk, Stefanie; Schunck, Christian H.; Fritsch, Lothar; Fähnrich, Nicolas; Köster, Kevin; Renkel, Patrick; Huber, Richard; Menz, Nadja
  • Konferenzbeitrag
    A shared responsibility model to support cross border and cross organizational federation on top of decentralized and self-sovereign identity: Architecture and first PoC
    (Open Identity Summit 2023, 2023) Kubach, Michael; Henderson, Isaac; Bithin, Alangot; Dimitrakos, Theo; Vargas, Juan; Winterstetter, Matthias; Krontiris, Ioannis
    This paper discusses the challenges of transitioning from legacy federated identity systems to emerging decentralized identity technologies based on self-sovereign identities (SSI) and verifiable credentials, which are being used in initiatives such as Gaia-X and Catena-X for secure and sovereign data sharing. The adoption of SSI and decentralized identity technologies requires a standardized reference model that addresses challenges around trust in cross-border and crossorganizational federations based on decentralized identities. To facilitate this transition, the paper proposes a new Fed2SSI architecture that introduces a middle layer of abstraction for the policybased transformation of credentials, enabling interoperability between legacy federated identity solutions and SSI/decentralized identity environments. The architecture is implemented in a prototype and an exemplary use case is presented to illustrate the added value of this approach.
  • Konferenzbeitrag
    A Trust Registries Enrollment Tool Supporting Decentralized Ecosystem Governance: Use Case Healthcare
    (Open Identity Summit 2024, 2024) Johnson Jeyakumar, Isaac Henderson; Kubach, Michael; Vargas, Juan; Walker, John
    Decentralized governance models have gained prominence in business ecosystems. These require trust, transparency, and collaboration among diverse stakeholders. Trust registries play a pivotal role in ensuring the integrity and authenticity of participants within these decentralized networks. However, the enrollment process presents challenges such as identity verification and reputation assessment. This paper introduces a Trust Registries Enrollment Tool (TRET) to facilitate the process. It simplifies procedures, strengthens trust, and enables secure and efficient participation in an ecosystem. This paper outlines its architecture, technical implementation, and potential impact. The practical use case is COVID19 certificate providers, highlighting its transformative potential for decentralized governance in healthcare and beyond.