Quantum key distribution method and communication device

Details Quantum key distribution method and communication device Quantum key distribution method and communication device

2003-09-12

2009-10-27

Korzuch, William R (Department: 2431)

Cryptography

Key management

Key distribution

C380S044000, C380S255000, C380S256000, C380S279000, C714S758000, C714S780000, C713S189000, C726S014000

Reexamination Certificate

active

07609839

ABSTRACT:
In order to create a highly-secured common key while a data error on a transmission path is corrected by an error correction code having remarkably high characteristics, in a quantum key distribution method of the invention, at first a communication apparatus on a reception side corrects the data error of reception data by a deterministic, stable-characteristics parity check matrix for a “Irregular-LDPC code.” The communication apparatus on the reception side and a communication apparatus on a transmission side discard a part of pieces of the common information according to public error correction information.

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Kou et al., “Low density parity check codes:Construction based on finite geometrics”, 2001 IEEE Globecom, received on Jan. 31, 2001, pahes 825-829.
Chung et al., “Analysis of sum-product decoding of low-density parity-check codes using a Gaussian approximation”, IEEE Transactions on Information Theory, vol. 47, No. 2, received on Apr. 9, 2001, pp. 657-670.
Bennett et al., “Quantum cryptography:Public key distribution and coin tossing”, International Conference on Computers, Systems & Signal Processing, India, Dec. 10-12, 1984.
Brassard et al., Secret-key reconciliation by public discussion, In Advances in Cryptology, Eurocrypt '93, Lecture notes in Computer Science 765, pp. 410-423.

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