Decentralized Zero-Trust: A Directed Acyclic Graph (DAG)-Based Ledger Framework for Attribute-Based Access Control in Resource-Constrained Edge Environments
Author(s): Naresh Kalimuthu
Publication #: 2601021
Date of Publication: 28.01.2026
Country: United States
Pages: 1-9
Published In: Volume 12 Issue 1 January-2026
DOI: https://doi.org/10.62970/IJIRCT.v12.i1.2601021
Abstract
The rapid expansion of the Internet of Things (IoT) has necessitated a shift to distributed Edge environments, rendering traditional perimeter security obsolete and exposing scalability bottlenecks in centralized Zero-Trust Architecture (ZTA). This paper proposes a novel, decentralized ZTA framework that integrates Directed Acyclic Graph (DAG) distributed ledgers with Attribute-Based Access Control (ABAC) to eliminate single points of failure. By leveraging asynchronous DAG protocols (e.g., IOTA Tangle, Obyte) instead of linear blockchains and using lightweight Elliptic Curve Cryptography (ECC) for resource-constrained devices, the system enables fee-less, parallel transaction processing. Quantitative analysis demonstrates the framework's superior performance, achieving over 1,000 transactions per second (TPS), sub-second finality, and 15ms encryption times on commodity hardware, thereby establishing a robust, partition-tolerant security model for the future Internet of Everything.
Keywords: Directed Acyclic Graph (DAG), IOTA Tangle, Obyte, Zero-Trust Architecture (ZTA), Attribute-Based Access Control (ABAC), CP-ABE, Edge Computing, Data Confidence Fabric (DCF).
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