Shared data refining device and shared data refining method

Details Shared data refining device and shared data refining method Shared data refining device and shared data refining method

H - Electricity

04

L

H04L 9/38 (2006.01) H04L 1/00 (2006.01) H04L 9/08 (2006.01)

Patent

CA 2421720

Each of a transmitter (1) and a receiver (2) divides temporarily-shared data into one or more purification blocks and one or more disposable blocks, and mixes each purification block so as to enlarge a Hamming distance between corresponding purification blocks being held by the transmitter (1) and the receiver (2) by using a Hamming distance amplification effect. The transmitter (1) Vernam-encrypts the mixed data with the disposable data and transmits the mixed data to the receiver (2), and the receiver (2) decrypts the received Vernam-encrypted data by using a disposable block owned thereby, and compares the Hamming distance between the purification block owned thereby with the mixed data with a predetermined value so as to judge whether each purification block can be shared between the transmitter (1) and the receiver (2).

Des données destinées à être partagées sont divisées en un bloc d'affinage et un bloc jetable. Le bloc d'affinage est agité par un effet d'amplification de distance de bourdonnement produit par les deux blocs, qui vise à étendre la distance de bourdonnement. Un émetteur (1) transmet ces données d'agitation comme procédé Vernam de chiffrement au moyen de données jetables ; et un récepteur (2) décode le procédé Vernam de chiffrement dans son bloc jetable, compare les données qui ont agité son propre bloc d'affinage avec une distance de bourdonnement, et détermine si le partage est possible ou non.

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