FIELD: information technologies.
SUBSTANCE: invention relates to a system and a method for signing transactions. The system contains the first module with a communication interface of a public network and a controller for processing of a transaction, using a blockchain network or a transaction server available in the public network. The system also contains the second module with a random number generator and a protected controller for generation of initial words and closed keys. The system additionally contains a transfer module with a controller and a switch for selective connection of a data interface of the transfer module either to a data interface of the first module or to a data interface of the second module, so that the data interface of the first module is never connected to the data interface of the second module.
EFFECT: increase in the safety of transactions.
13 cl, 6 dwg
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