A method of improving safety of the cryptographic protection of information (CPS), in particular the formation of binary nodes pseudorandom sequence (PRS), operating in a noise generated by an attacker. System of Boolean equations realize linear characteristic polynomial arithmetic, allowing parallelize the process of calculating the elements of the PRS. “Arithmetization” logical accounts, in turn, allowed the use of redundant modular device codes for error control operation of generating units and to provide bandwidth, thus the necessary security of their operation in the CPS.