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@article{198978,
        author = {Akshay Agarwal and Kola Rahul and Samudrala Varshitha and Surapaneni Aishwarya and Ramesh Babu},
        title = {Blockchain-Based Zero Trust Network Access System},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {12},
        number = {11},
        pages = {13087-13094},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=198978},
        abstract = {The rapid expansion of cloud computing, remote access, and distributed digital systems has increased the attack surface of modern enterprise networks. Traditional perimeter- based security models assume that internal entities are trustworthy, resulting in vulnerabilities such as insider threats, credential misuse, lateral movement, and large-scale data breaches. Zero Trust Network Access (ZTNA) addresses these weaknesses by enforcing continuous verification based on identity, device status, and contextual attributes. However, most ZTNA deployments still depend on centralized authentication and policy servers, which create single points of failure and reduce overall reliability.
To overcome these limitations, the proposed approach integrates decentralized blockchain mechanisms with Zero Trust principles to achieve secure and transparent access control. Smart contracts on the Ethereum blockchain handle authentication, authorization, and immutable activity logging, while AES encryption protects sensitive data stored off-chain. Every access request is verifiable and recorded on a distributed ledger, improving accountability and data integrity. Experimental evaluation indicates strengthened network resilience, removal of centralized trust dependencies, and improved protection against unauthorized access.},
        keywords = {Zero Trust Network Access, Blockchain Security, Smart Contracts, Access Control},
        month = {April},
        }