METHOD OF SECRET INFORMATION EXCHANGE Russian patent published in 2021 - IPC H04L9/00 

FIELD: telecommunications.

SUBSTANCE: array for storing the bit sequence of the message S_k is formed. A database (hereinafter – DB) of digital records is formed. A digital record is selected from the DB that exceeds the calculated value of the minimum required carrier message V_cm, but is the closest in size. The source data of the transmitting and receiving subscribers is synchronized. The packet is transmitted over the communication channel. The counter of transmitted blocks of the information message z and the counter of received blocks of the information message h are set. The size of the block Q of the information message and an acceptable deviation of the number of lost packets Δ are set. An array to store the bit sequence {M_k} is formed. A communication session between sides A and B is performed. The percentage of lost packets X during the communication session is calculated. The information message S_k is split into blocks of length Q and the number of received blocks is calculated. A marker sequence is inserted in the packet header. The packet is transmitted to the side B. The sending of a response about the successful reception of the packet to the side A is blocked. The side A re-sends the packet with the specified number. This packet is intercepted and the information part of the packet is replaced with the corresponding block of the information message. The packet is transmitted to the side B. The side B extracts the information part from this packet and blocks sending a response to the side A about the successful reception of the packet. The side B forms an information message.

EFFECT: increased secrecy of information transmission during the process of information exchange.

2 cl, 4 dwg