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Title	Decentralized Identity Management For Internet Of Things (Iot) Devices Using Iota Blockchain Technology
ID_Doc	17656
Authors	Ramírez-Gordillo T.; Maciá-Lillo A.; Pujol F.A.; García-D’Urso N.; Azorín-López J.; Mora H.
Year	2025
Published	Future Internet, 17, 1
DOI	http://dx.doi.org/10.3390/fi17010049
Abstract	The exponential growth of the Internet of Things (IoT) necessitates robust, scalable, and secure identity management solutions to handle the vast number of interconnected devices. Traditional centralized identity systems are increasingly inadequate due to their vulnerabilities, such as single points of failure, scalability issues, and limited user control over data. This study explores a decentralized identity management model leveraging the IOTA Tangle, a Directed Acyclic Graph (DAG)-based distributed ledger technology, to address these challenges. By integrating Decentralized Identifiers (DIDs), Verifiable Credentials (VCs), and IOTA-specific technologies like IOTA Identity, IOTA Streams, and IOTA Stronghold, we propose a proof-of-concept framework that enhances security, scalability, and privacy in IoT ecosystems. Our implementation on resource-constrained IoT devices demonstrates the feasibility of this approach, highlighting significant improvements in transaction efficiency, real-time data exchange, and cryptographic key management. Furthermore, this research aligns with Web 3.0 principles, emphasizing decentralization, user autonomy, and data sovereignty. The findings suggest that IOTA-based solutions can effectively advance secure and user-centric identity management in IoT, paving the way for broader applications in various domains, including smart cities and healthcare. © 2025 by the authors.
Author Keywords	decentralized identity management; Internet of Things (IoT); IOTA Tangle; security; Web 3.0

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