METHOD FOR GENERATING THE ENCRYPTION/DECRYPTION KEY Russian patent published in 2022 - IPC H04L9/00 

FIELD: cryptography.

SUBSTANCE: invention relates to the field of cryptography. The expected result is achieved by generating a random binary symbol, forming a code word, an accepted binary symbol, a binary confirmation symbol, transmitting a binary confirmation symbol, forming an initial sequence on the side of the second correspondent of the communication network (CCN) and the first preliminary sequence on the side of the first CCN, forming a second preliminary sequence on the side of the third CCN, encoding the initial sequence, isolating a block of verification characters from the encoded initial sequence, transmitting the block of verification characters through communication channels without errors, forming and remembering the first and second decoded sequences, forming the hashing function on the side of the first correspondent, simultaneously transmitting the hashing function of sequences through the first direct and second direct communication channels without errors, respectively, to the second and third correspondents of the communication network, after which form an encryption /decryption key from the original, first and second decoded sequences is formed.

EFFECT: increase in the resistance to encryption/decryption key compromise by the violator.

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