Quantum key distribution method and communication apparatus

H - Electricity – 04 – L

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H04L 9/12 (2006.01) H03M 13/09 (2006.01) H04B 10/00 (2006.01) H04L 9/08 (2006.01) G11B 20/00 (2006.01) G11B 20/18 (2006.01) H03M 13/11 (2006.01)

Patent

CA 2499357

It is possible to create a shared key whose safety is surely guaranteed while correcting a data error in the transmission path by using an error correction code having an extremely high characteristic. According to a quantum key distribution method, firstly, a communication device of the reception side corrects the data error of the reception data by using a parity inspection matrix for an ~Irregular-LDPC code~ which is determinate and has stable characteristic. The communication device of the reception side and the communication device of the transmission side discard a part of shared information according to the error correction information disclosed.

L'invention permet de produire une clé partagée dont la sécurité est garantie, et de corriger une erreur de données dans le chemin de transmission au moyen d'un code de correction d'erreur présentant une caractéristique extrêmement élevée. Selon le procédé de distribution de clé quantique, un dispositif de communication côté réception corrige l'erreur de données des données de réception au moyen d'une matrice d'inspection de parité pour <= code à LDPCirrégulier >= déterminée et qui présente une caractéristique stable. Le dispositif de communication côté réception et le dispositif de communication côté transmission rejettent une partie des données partagées sur la base des données de correction d'erreur.

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