FIELD: data processing.
SUBSTANCE: invention relates to a method of encoding information in computer networks. Random number representing the secret key of the user is generated by the subscriber device of each user. VLAN identifier is set in the subscriber device, which "binds" the said VLAN identifier and MAC address to the secret key of the user. Obtained information is encoded using a QR code. Each user uses the subscriber device to photograph the QR codes of all other users. Based on the obtained data from QR codes in the subscriber device of each user, a table is formed, which contains information: User MAC address, VLAN identifier, secret key. During transmission, the transmitted information is encoded using the user's own secret key, and then using the secret key of the information recipient. After receiving the packets, checking whether the sender MAC address is included in the group of MAC addresses specified in the table, and with a positive response, decrypting only those frames that have a VLAN identifier corresponding to the VLAN identifier indicated in the generated table using the secret key, and then the obtained result is decrypted again, but with the help of the secret key of the information sender.
EFFECT: high security of encryption of information during exchange between users.
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