OPTICAL OUT-OF-BAND DISTRIBUTION OF KEYS Russian patent published in 2009 - IPC G06E1/00 

FIELD: physics, communication.

SUBSTANCE: invention is related to the field of data coding. The system of out-of-band communication includes track of coded data, which is configured for transportation of coded data. System of out-of-band communication includes optical out-of-band channel, which is physically separated from track of coded data. Track of coded data passes between optical transmitter and optical receiver. Optical out-of-band channel is configured for transmission of information on keys from optical transmitter to optical receiver.

EFFECT: excludes possibility of keys information interception.

29 cl, 7 dwg