QUANTUM KEY DELIVERY SERVICE PLATFORM

Provided is a quantum key delivery service platform that can adaptively manage a cryptographic key. According to an embodiment, the quantum key delivery service platform comprises a plurality of quantum key delivery devices and a management server. Each of the plurality of quantum key delivery devices transmits/receives cryptographic key information to/from another quantum key delivery device, and on the basis of the cryptographic key information, generates a cryptographic key to be shared with the other quantum key delivery device. The management server monitors the accumulation amount of cryptographic keys accumulated by each of a plurality of cipher communication devices in the plurality of quantum key delivery devices, records a consumption record for the encryption keys of each of the plurality of cipher communication devices, predicts a consumption amount for the cryptographic keys of each of the plurality of cryptographic communication devices, on the basis of the cryptographic key consumption records, and detects, on the basis of the cryptographic key accumulation amounts and the prediction results for the cryptographic key consumption amounts, a sign of insufficient cryptographic keys that could occur for cipher communication between the plurality of cipher communication devices.