FIELD: information technologies.
SUBSTANCE: method of quantal coding and transmission of cryptographic keys, in which single-photon conditions are exposed to combined phase-time conversions on transmitting and receiving stations. On a receiving station, additionally to information ones, they generate reference time windows, a series of single-photon conditions is detected both in information and in reference time windows. Using produced statistics of photocounts, a permissible error is calculated in information time windows, and then compared to a threshold value of an error in information time windows to produce a cryptographic key, which is only known at transmitting and receiving stations.
EFFECT: expansion of various errors range in transmitted keys at a receiving station.
3 dwg, 4 tbl
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|---|---|---|---|
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|
RU2507690C1 |
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|
RU2622985C1 |
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RU2566664C1 |
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RU2667755C1 |
