SKT aims to lead global network security standardization by successfully linking 5G quantum-resistant cryptography test networks.

SKT announced on the 19th that it has developed a SIM-telecommunications network authentication technology utilizing quantum-resistant cryptography (PQC) in collaboration with global security company Thales and successfully linked the 5G test network.

As existing security systems are threatened by recent attacks from sophisticated hackers, technologies that incorporate quantum computing are beginning to attract attention. SKT is applying various technologies such as quantum key distribution (QKD), quantum resistant cryptography, and quantum random number generator (QRNG) to terminals and communication networks.

This technology trial involved applying quantum-resistant cryptography algorithms for encryption and key exchange to SIM and 5G authentication systems in collaboration with Thales, and testing them on a 5G test network.

SKT said, "In this technology test, when applying the quantum-resistant cryptography algorithm, the same operations as the existing security system, such as registration, authentication, and call reception, were successfully carried out."

In addition, the two companies have developed the quantum-resistant cryptography algorithm of this technology test as an API, laying the foundation for its use in future services such as M2M/IoT that require high security as well as communication network authentication.

Meanwhile, SKT plans to secure differentiated solutions for communications network security based on the quantum-resistant cryptography that succeeded in this technology test along with the quantum cryptography and quantum random number generator that it has developed and commercialized, and to lead the global network security standardization in areas such as 5G-Advanced, 6G, and IoT evolution in the future.

We will also continue to work with Thales to achieve international standardization of the quantum-resistant cryptography authentication structure developed for this technology test.

Ryu Tak-ki, SKT infrastructure technology manager, said, “The purpose of this quantum-resistant cryptography technology test was to strengthen the security and stability of long-term communication networks with quantum computing in mind,” and “SKT will continue to research security systems that encompass not only communication networks but also services in the future.”