A communications system and a master unit - Mitsubishi Electric Corporation

Title:

A communications system and a master unit

Document Type and Number:

Japanese Patent JP5987123

Kind Code:

B2

Abstract:

In a setting phase, a master apparatus M assigns addresses As1 to As3 to slave devices S1 to S3, respectively, and transmits random numbers R1 to R3 to the slave device S1 to S3 using the assigned addresses. When the random numbers are received, the slave devices S1 to S3 encrypt unique IDS1 to IDS3 by a secret key MK to generate encrypted data C1 to C3. The master apparatus M obtains the encrypted data C1 to C3 from the slave devices S1 to S3, decrypts the obtained encrypted data C1 to C3 by a secret key MK held by the master apparatus M, and generates a correspondence table which indicates a correspondence between the decrypted unique IDS1 to IDS3 and the addresses As1 to As3 used to obtain the unique IDS1 to IDS3.

Inventors:

Daisuke Suzuki

Application Number:

JP2015547372A

Publication Date:

September 07, 2016

Filing Date:

November 18, 2013

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