METHOD FOR SECURE STORAGE AND UPDATING DATA IN DISTRIBUTED REGISTER USING QUANTUM COMMUNICATION NETWORKS Russian patent published in 2021 - IPC G06F16/182 

FIELD: computing.

SUBSTANCE: invention relates to the field of computing for data transmission in distributed systems. The effect is achieved through a method for secure distributed storage and updating of data in a distributed ledger based on a quantum communication network, in which all N network nodes, where N>2 are pairwise connected to each other by quantum key distribution devices and store a copy of the distributed ledger, containing the stages at which, using quantum cryptography devices, pairs of symmetric keys between all network nodes are created, the current allowable number of compromised nodes T is recorded in the distributed ledger, a transaction is formed by at least one of the network nodes, and the transaction is broadcast by the node that generated the transaction the rest of the network nodes, at least using the broadcast algorithm on pairwise authenticated messages, or using the broadcast algorithm on pseudosignatures, update their own copies of the registry by the network nodes that have accepted the transaction.

EFFECT: increasing the security of storing and updating data in a distributed ledger.

8 cl, 6 dwg