METHOD FOR FORMING KEY OF ENCRYPTION/DECRYPTION Russian patent published in 2017 - IPC H04L9/14 H04K1/00 

FIELD: physics.

SUBSTANCE: method for forming the key of encryption/decryption provides simultaneous forming the source sequence on the side of the first communication network correspondent and the preliminary sequences on the sides of the second and the third correspondents, encoding the first preliminary sequence, isolating a block of testing symbols therefrom, simultaneous transmitting it over the communication channels without errors to the first and the third correspondents, simultaneous forming the decoded sequences of the first and the third correspondents, forming the sequence hashing function by the first correspondent, simultaneous transmitting it through direct communication channels without errors to the second and the third correspondents and simultaneous forming the keys of encryption/decryption with all correspondents by hashing the first preliminary and the decoded sequence according to the sequence hashing function formed on the side of the first correspondent.

EFFECT: increasing resistance of the generated encryption key, decryption for the communication network including three correspondents, to the compromise on the part of the offender.

11 cl, 44 dwg