KT Adopts Second Domestic Standard for Quantum Cryptography Network
Expectations are high for the domestic telecommunications-equipment-solution ecosystem to be revitalized.
Building a multi-purpose infrastructure for the New Deal quantum cryptography project.


KT announced on the 26th that the 'Interface and Management Model for Interoperability between Heterogeneous Quantum Key Distribution (QKD) Devices' proposed to the Telecommunications Technology Association (TTA) of Korea was finally adopted as a domestic standard for quantum cryptography communication.

With this adoption, KT now possesses two domestic standard technologies related to quantum cryptography communication, following the 'Quantum Cryptography Transmission Network Function Structure' in 2019.

The interface and management model for interoperability between QKD network devices supports direct communication between devices distributing quantum cryptography keys and management systems.

It is a practical standard that explicitly proposes the data, data format, and protocol required for interconnection between quantum cryptography communication network devices.

This allows for the mixing and use of quantum cryptography equipment from various manufacturers on a single network, making it easier and more stable to build a quantum cryptography system than before.

◇ Building a quantum key distribution network with multiple devices becomes easier.

Quantum cryptography is a physical property of quantum that cannot be hacked.This technology uses quantum cryptography to create absolutely secure encryption keys, enabling encrypted communication. Quantum cryptography keys are generated by a distribution device, which then stores and transmits them to a key management system.

Until now, there has been no standard interface between quantum key distribution devices and management systems, making it difficult to build a quantum key distribution network using only devices from a single manufacturer or requiring a long time to build a quantum key distribution network using multiple types of devices.

KT developed a quantum cryptography key management system that applies a domestic standard-based interface and built a multi-type quantum cryptography infrastructure through linkage with three domestic QKDs in the New Deal quantum cryptography infrastructure construction project.

This is expected to help domestic quantum cryptography equipment manufacturers, SDN (Software Defined Networks), NMS (Network Management System), and application service providers secure leadership in related industries.