FIELD: physics.
SUBSTANCE: invention relates to systems for generating keys using quantum key distribution (QKD) technology for cryptographic information security means. On the side of user B1, a trusted connection is made via 2nd local communication line to a system for generating and distributing keys on an arbitrary DN Px. Request is sent from user B1 to distribution nodes (DN) Px to provide a communication key KB 1 for communication with a network control centre (NCC). Request for provision of key QPK1 is sent for communication with NCC with indication of NCC identifier from DN Px in trusted intermediate nodes TIN Ax, to which DN Px is connected, via 1st local communication line. Generating in trusted intermediate nodes TIN Ax, having received a request, together with TIN AD, requested quantum-protected key QPK1. Generated key QPK1 is transmitted from TIN Ax to DN Px via 1st local communication line. Generated key QPK1 is transmitted from the TIN AD to NCC via 1st local communication line. Obtained key QPK1 is assigned in DN Px by key KB1 for communication of user B1 with NCC. Key KB 1 is transmitted from the DN Px to the user B1 via 2nd local communication line. User B1 is disconnected from DN Px. Information is transmitted to the NCC from the DN Px through the digital data network on the need to assign the key QPK1 received from the TIN AD by the key KB1 for communication of user B1 with the NCC. Obtained key KB1 is stored in the NCC for communication with user B1.
EFFECT: faster provision of keys for users.
2 cl, 1 dwg
