Decentralized Digital Identities in ARCADIAN-IoT: Enhancing IoT Security with DIDs

The Role of Decentralized Identifiers in IoT Security

Decentralized Identifiers (DIDs) are revolutionizing digital identity management by offering verifiable, self-sovereign, and privacy-preserving solutions. In the ARCADIAN-IoT project, we investigate the potential of DIDs for creating a secure and decentralized digital identity system for IoT devices.

Adopting the Standard DID Architecture in ARCADIAN-IoT

Our project adheres to the standard architecture model for DIDs, implementing the features outlined in the DID specifications. We primarily analyze Verifiable Data Registry (VDR) candidates based on Sidetree DID Method overlay networks, composed of independent peer nodes and blockchain trust anchors. Nevertheless, we also examine alternative DID methods that ensure privacy and trust without relying on blockchain technology.

Key Requirements for Decentralized Identity in IoT Systems

Our project has established essential requirements, including:

  • Compliance with the W3C Decentralized Identifier specification
  • Advanced privacy features through cryptographic mechanisms, such as Zero-Knowledge Proofs (ZKPs) and ZK-SNARKs
  • Utilizing Distributed Ledger Technology (DLT) and blockchain for Decentralized Identifiers
  • Developing a user-friendly mobile interface for end-users’ personal devices

Integrations and Partnerships for a Comprehensive DID Solution

To meet these requirements, we consider:

  • Collaborating with existing distributed and decentralized systems for storing DID Documents
  • Integrating with permissioned blockchains as trust anchors for publishing DID Documents
  • Incorporating self-published DIDs that don’t depend on existing distributed and decentralized systems

Advantages and Contributions of Decentralized Identifiers in IoT

By implementing DIDs, we enhance IoT security with multiple benefits such as advanced privacy features and seamless digital identity management across devices. Our approach contributes to the overall ARCADIAN-IoT framework by offering a versatile solution adaptable to various use cases.

Future Plans for ARCADIAN-IoT and Decentralized Identifiers

Moving forward, we will:

  • Determine the most suitable DID Methods based on use cases, chosen SSI Framework, and privacy-preserving cryptographic signatures
  • Continue prototyping a Sidetree-based DID Method anchored on a blockchain
  • Examine the permissioned blockchain network selected in Deliverable 3.1


The ARCADIAN-IoT project has made significant strides in developing a decentralized identity solution using a self-sovereign approach for IoT systems. By incorporating Decentralized Identifiers, we create a secure and decentralized digital identity system for IoT devices, advancing the ARCADIAN-IoT framework.

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