In the context of 5G networks and the evolution of cryptographic standards, SK Telecom (SKT) and Thales partnered to test advanced quantum-resistant cryptography. Based on the 5G standalone network and 5G SIM, the solution aims at encrypting and decrypting subscriber identity in a secure way to protect user privacy from future quantum threats. This achievement is already crucial today as it protects subscribers against potential ‘record now, decrypt later’ attacks.
It also represents a major step forward since it allows the safeguarding of subscribers’ identities using a regular commercial telecom network.
The innovation consists in upgrading the cryptography used to anonymise the user’s digital identity on the 5G network. Indeed, the user identity on a 5G network is concealed and secured on the device side thanks to the 5G SIM. The security mechanisms involve cryptographic algorithms designed to resist attacks from future quantum computers, providing a level of security that is considered robust in the post-quantum era.
The U.S. National Institute of Standards and Technology (NIST) has been leading an initiative to standardise post-quantum cryptographic algorithms, and SKT and Thales have used the Crystals-Kyber one for this real condition trial. These post-quantum secure algorithms are being developed to withstand attacks from both classical and quantum computers.
“This collaboration between SKT and Thales highlights our commitment to staying ahead of the curve in terms of cybersecurity and ensuring the safety of our customers’ data,” said Yu Takki, a vice president and head of infra technology office of SKT. “PQC provides enhanced security through the use of cryptographic algorithms that are thought to be secure against quantum computer attacks. Going forward, we will combine PQC SIM with our additional Quantum expertise to achieve end-to-end quantum-safe communications.”
“As quantum computers have the potential to break certain existing cryptographic algorithms, there is an emerging need to transition to cryptographic algorithms believed to be secure against quantum attacks,” said Eva Rudin, a senior vice president for mobile connectivity and solutions at Thales. “For 5G networks, Thales started to invest on cryptographic algorithms that are quantum-resistant to enhance continued communications security and privacy for users.”
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