Summary - Y.3831 (12/2025) - Integration of quantum key distribution network and user networks supporting end-to-end modern cryptography services – Functional architecture

In order to support QKD service to mobile objects (i.e., autonomous cars, mobile phones, etc.), it is challenging to establish and maintain a quantum channel in a stable manner with them and to support KSA-keys. Such a challenge calls for a solution to integrate the QKDN and user networks supporting modern cryptography services.
Recommendation ITU-T Y.3826 addresses these challenges and specifies several architectural models, requirements, and a framework architecture for the integration. This Recommendation specifies a functional architecture for the integration of QKDN and UNemc. It defines a functional architecture, associated functions, reference points and some example operational procedures.