Author ORCID Identifier
0009-0008-3627-910X
Biosketch
T. S. Gururaja completed his Master’s degree in Physics and pursued his doctoral research in Quantum Cryptography at SASTRA Deemed to be University under the guidance of Dr. Padmapriya Pravinkumar. His doctoral research focused on Quantum Random Number Generation (QRNG), Quantum Key Distribution (QKD), Quantum Image Encryption and Secure Communication. He is currently working as a Senior Project Engineer at CPPICS, IIT Madras, contributing to research and development in quantum-secure communication technologies. He has contributed to 11 research publications, including peer-reviewed journal articles, international conference papers, book chapters, and a published patent. His research integrates quantum computing, cryptography, quantum communication, and photonic approaches for developing secure solutions for next-generation communication systems. He has received several recognitions for his contributions to quantum technology, including IBM Quantum Excellence recognitions in 2024 and 2025, IBM Qiskit Advocate and the Best Paper Award at ICIIET 2025 for his research on quantum true random number generation. He has also contributed to a Department of Telecommunications (DoT)-funded 6G project, working on quantum-security-related aspects of next-generation communication systems.
Date of Award
25-8-2026
Document Type
Thesis
School
School of Electrical & Electroncis Engineering
Programme
Ph.D.-Doctoral of Philosophy
First Advisor
Dr. Padmapriya Pravinkumar
Keywords
QRNG, QKD, Quantum Image Encryption, Quantum Security
Abstract
The rapid advancement of digital communication and quantum technologies are developing at an accelerated pace makes cybersecurity and data protection a big challenge. The traditional cryptographic methods are increasingly under attack by phishing, brute force, cryptanalytic attack and threats of quantum computing. This research presents a quantum-secure communication based on Quantum Random Number Generator (QRNG), Quantum Key Distribution (QKD), Quantum Image Encryption (QIE) and secure quantum key access using a dongle-based hardware.
QRNG models were designed in the quantum simulator and hardware. The sequences produce high entropy and they passed the statistical randomness tests with p-values higher than 0.01 indicates strong randomness for cryptographic purposes. The QRNG were used to secure the quantum communication and detection of eavesdropping by transmitting them into the QKD protocol. It was able to identify unauthorized interception through disturbances introduced in the transmitted quantum states during eavesdropping.
To improve the multimedia security, a secure QIE framework was proposed using novel enhanced quantum image representation and a selective Quantum Fourier Transform circuit. The obtained results of the encrypted images indicate a strong resistance against differential, statistical and various quantum cryptographic attacks. A dongle-based authentication system has been framed for secure access to quantum keys and digital banking applications.
This framework combines customer identity, one-time password, media access control address validation and secure hardware authentication to enhance phishing, hardware cloning and unauthorized cloud access resistance. The proposed research establishes a scalable and practical quantum-secure framework for future cloud security applications, multimedia communication and quantum safe cyber security applications.
Recommended Citation
TS, Gururaja Mr, "Development of Quantum Cryptographic Algorithm for Next Generation Secure Systems" (2026). Theses and Dissertations. 225.
https://knowledgeconnect.sastra.edu/theses/225