METHOD OF RECEIVING/TRANSMITTING CRYPTOGRAPHIC INFORMATION Russian patent published in 2013 - IPC H04K1/00 G06F21/62 

FIELD: radio engineering, communication.

SUBSTANCE: method of receiving/transmitting cryptographic information through global quantum key distribution employs an apparatus for synthesising a single-photon or a high-dimensional secret photon quantum key (SPQK) on Earth through an operation for input thereof into a fibre-optic line for transmitting the SPQK to a centre for directed secure transmission thereof to a low-orbiting spacecraft over a directed atmosphere channel with a coherent beam in the terahertz range, with another operation for transmitting the SPQK over a highly directional channel also with a coherent beam in the terahertz range or an optical laser beam to other spacecraft. Further, the final target secret operation is used to transmit the SPQK over the atmosphere channel in the terahertz range to ground-based parts for receiving information. During all operations for transmitting cryptographic information, SPQK are created using a random number generator.

EFFECT: creating a fast, non-intercepted quantum key with its transmission and reception time shorter than its encryption time.

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