Kookmin University Successfully Demonstrates Quantum-Secure Satellite Communication

Kookmin University announced on April 22 that the research team led by Professor Okyeon Lee from the Department of Information Security and Cryptology, in collaboration with Arion Communication, a satellite communication service provider, has successfully implemented and demonstrated a next-generation secure communication technology that combines low earth orbit (LEO) satellite communication with post-quantum cryptography (PQC, ML-KEM, ML-DSA).

Researcher Hyunjin Yoon from Kookmin University is demonstrating quantum-secure satellite communication. Kookmin University

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This technology features a hybrid structure that integrates quantum key distribution (QKD) for wired segments and post-quantum cryptography for wireless segments, enabling it to overcome the limitations of existing cryptographic systems and respond to security threats in the era of quantum computing. It is also considered a core technology for countering the "harvest-now, decrypt-later" (HNDL) threat.

From a technical perspective, the team implemented an end-to-end encryption structure-including satellite links-based on a certified quantum cryptography module and post-quantum cryptography. They also achieved interoperability between the cryptography module and satellite equipment, and succeeded in linking Arion Communication’s IoT product line, the "TYTO" series, with Kookmin University's cryptography module.

Professor Lee’s research team plans to expand the application of this technology to defense communication networks, satellite-based battlefield networks, and unmanned systems (MUM-T), among other areas. They also aim to accelerate the establishment of a quantum security integrated cooperation hub. The university intends to provide an environment where companies can pursue actual certification and commercialization, thereby strengthening a connected system that encompasses verification, validation, and commercialization of quantum security technologies.

Professor Lee stated, "Kookmin University’s Quantum Campus will play a central role as a quantum security integrated cooperation hub, connecting research and development, testing and verification, commercialization, standardization, and the industrial ecosystem." He added, "By integrating quantum security technology with satellite communications, we will expedite the creation of a Quantum Campus that spans maritime, terrestrial, aerial, and space domains."

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