Writing in Nature in June 2020, Chinese researchers (which includes Jian-Wei Pan, the “father of quantum”) demonstrated that a secure, ‘entanglement-based’ cryptographic Quantum Key Distribution (QKD) solution can be deployed over distances greater than 1,000 kilometres without trusted relays.
Why is this important?
Real-world QKD-based cryptography – a way of sharing secret keys between geographically-separated users – currently works only over a maximum distance of about 100 kilometres. Trusted relays are needed for greater distances, but they introduce security risks. QKD not only helps mitigate these risks but also increases the secure distance tenfold. This could augur good news for mobile carriers – proof of which is already evident in South Korea, the home country of mobile giants like Samsung. Mobile carriers here are already utilizing quantum cryptography and applying quantum-resistant encryption to their networks. Handset developers are also embracing quantum cryptography to provide devices with advanced security.
Despite these positive events, we believe that more effort is required to develop quantum-based cryptographic solutions that can enhance the security of communication links. Quantropi has made great strides in this regard. Quantropi’s SEQUR™ product suite includes a Digital QKD solution for distributing synchronized random numbers and keys between peers over today’s Internet quantum-securely. And it supports ETSI-014 QKD standard, point-to-point and point-to-multipoint key distribution. SEQUR™ is available today through Quantropi’s QiSpace™ platform along with its quantum-secure crypto-agile asymmetric encryption product MASQ™, and quantum-secure symmetric encryption product QEEP™.