MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202611005301 A) filed by Delhi Technological University, New Delhi, on Jan. 19, for 'quantum-cryptography-enhanced verification system and method utilizing qft tags and qkd-derived keys for secure iiot communication.'
Inventor(s) include Yati Piplani; and Dr. Pawan Singh Mehra.
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 present invention discloses a quantum-cryptography-enhanced verification system and method for securing communication in Industrial Internet-of-Things (IIoT) environments. The system integrates Quantum Key Distribution (QKD) with a contextual Quantum Key Derivation Function (QKDF) and a Quantum Fourier Transform (QFT)-based authentication mechanism to provide quantum-native message integrity and authenticity. An Edge Gateway encrypts payload data using QKD-derived keys and generates a quantum authentication tag by embedding a keyed, message-dependent phase structure into a quantum superposition followed by a QFT. The ciphertext and message label are transmitted over an authenticated classical channel, while the corresponding quantum authentication tag is transmitted over a quantum channel. A Cloud Gateway verifies authenticity by applying inverse phase modulation and an inverse QFT prior to decryption, enabling a verify-then-decrypt operational model. The invention prevents replay, forgery, and desynchronisation attacks and ensures efficient, scalable, and quantum-resilient IIoT communication."
Disclaimer: Curated by HT Syndication.
