METHOD FOR MANAGING AUTHENTICATION RESOURCES IN QUANTUM KEY DISTRIBUTION NETWORKS DESCRIBED BY CONNECTED GRAPHS OF ARBITRARY CONFIGURATIONS Russian patent published in 2024 - IPC H04L9/08 H04L9/32 

FIELD: encryption.

SUBSTANCE: invention relates to a method for managing authentication resources in quantum key distribution networks with an arbitrary configuration. A unidirectional key transport is used with a total number of N nodes in the network, where each node has c connections, and the unidirectional key transport protocol connects two nodes between which nodes and the shortest route goes through [(N – 2 + c)/c] nodes, where [·] - rounding down, and all nodes participating in the session from the first to Nc inclusive have the same number of outgoing connections c, all nodes starting from N-c+a, where 1 ≤ a ≤ c, have c-a outgoing connections, all nodes from c +1 to node N inclusive, participating in the session, have the same number of incoming connections c, and all a-e nodes, where 1 ≤ a ≤ c, have a-1 incoming connections. Encryption using the specified protocol is carried out as follows: each route is assigned a bit string K_b and from node i to node j, where i is the number of the first node of the pair, j is the number of the second node of the pair, the concatenation of those K_b bit strings whose route passes between these nodes is transmitted and encrypted using k_ij keys obtained using quantum key distribution systems between nodes i and j ; the final key obtained by the last node is obtained by bitwise exclusive OR operation of the bit strings K_b.

EFFECT: providing the ability to manage the amount of resources used for authentication.

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