Quantum key relay method and apparatus based on centralized control network

摘要

Embodiments of the present application relate to the field of communication technology, and in particular, to a quantum key relay method and apparatus based on a centralized management control network for determining a globally optimal key relay instruction. Embodiments of the present application can be applied to a central management control network. A centralized controller obtains Z service requests, and identifies a source service node identifier and a destination service node identifier corresponding to each of the Z service requests, a quantum key consumption parameter, and a centralized management control network. Globally optimal key relay instructions corresponding to G service requests are globally determined based on the topology information of the key nodes, and the key relay instructions corresponding to the G service requests are converted into key relay instructions. The key node performs quantum key relay based on the key relay instruction to generate a shared quantum key between the source key node and the destination key node, since the key node distributes the quantum key to the corresponding key node.