MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202521085985 A) filed by Pandit Deendayal Energy University, Gandhinagar, Gujarat, on Sept. 10, 2025, for 'secure and trustworthy blockchain-based failover model for internet-of-vehicle enabled smart city using ecc cryptosystem.'

Inventor(s) include Dr. Sanjeev Kumar Dwivedi.

The application for the patent was published on April 17, under issue no. 16/2026.

According to the abstract released by the Intellectual Property India: "The invention discloses a blockchain-based failover authentication model for Vehicular Ad-hoc Networks (VANETs) in Internet-of-Vehicle (loV) enabled smart cities. In existing systems, vehicles rely on the nearest Roadside Unit (RSU) for credential issuance and authentication. Failure of an RSU disrupts communication and leads to system downtime. The proposed model introduces a decentralized blockchain-assisted framework that allows vehicles to seamlessly authenticate with alternate RSUs in case of primary RSU failure. The system employs Elliptic Curve Cryptography (ECC), a 256-bit one-way hash function, and XOR operations to achieve lightweight, privacy-preserving, and secure mutual authentication. Session keys are generated without transmitting private parameters over public channels. Security is formally validated using Scyther and Real-or-Random (RoR) models, ensuring resistance to impersonation, replay, and man-in-the-middle attacks. Performance evaluation confirms low communication overhead and computation time, making the invention suitable for real-time vehicular environments while enhancing reliability, availability, and trustworthiness of loV communication systems."

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