TRANSMITTER, RECEIVER, QUANTUM KEY DISTRIBUTION (QKD) SYSTEM AND QUANTUM KEY DISTRIBUTION METHOD

摘要

According to an embodiment, a transmitter transmits first transmission key data and second transmission key data as quantum information. The transmitter includes a first privacy amplifier and a second privacy amplifier. The first privacy amplifier generates first secure key data by performing privacy amplification to remove information that has possibly been acquired by an eavesdropper of the first transmission key data on the first transmission key data. The second privacy amplifier generates second secure key data by performing the privacy amplification to remove information that has possibly been acquired by the eavesdropper of the second reception key data on the decoded key data.

主权项

1. A transmitter that transmits first transmission key data and second transmission key data as quantum information, comprising:
an error correction encoding unit configured to generate first additional information by performing error correction encoding of the first transmission key data; an error correction decoding unit configured to generate decoded key data by correcting errors contained in the second transmission key data using second additional information generated based on second reception key data corresponding to the second transmission key data; a first privacy amplifier configured to generate first secure key data by performing privacy amplification to remove information that has possibly been acquired by an eavesdropper of the first transmission key data on the first transmission key data; and a second privacy amplifier configured to generate second secure key data by performing the privacy amplification to remove information that has possibly been acquired by the eavesdropper of the second reception key data on the decoded key data.