Title:
COMMUNICATION SYSTEM, PUBLIC KEY ENCRYPTION DEVICE, AND METHOD THEREOF
Document Type and Number:
Japanese Patent JP2019047210
Kind Code:
A
Abstract:
To provide a communication system that can keep communication contents secret from communication devices other than communication opposite parties in a group, and requires a fewer types of encryption and decryption keys that should be managed in the whole group.SOLUTION: Each of communication devices 2 stores all of public keys set to the communication devices 2 in a communication system 1 and all of secret keys set to other communication devices. Each communication device 2 generates encryption data by using all of the public keys set to the communication devices other than a communication opposite party communication device and broadcasts the encryption data. The other communication devices 2 receive the encryption data broadcast and decode it using all of the secret keys set to the communication devices other than the communication opposite party communication device.SELECTED DRAWING: Figure 4
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Inventors:
INABA TAKUYA
SUMIYOSHI HITOSHI
SUMIYOSHI HITOSHI
Application Number:
JP2017165987A
Publication Date:
March 22, 2019
Filing Date:
August 30, 2017
Export Citation:
Assignee:
TOSHIBA CORP
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP
International Classes:
H04L9/14; H04L9/08
Attorney, Agent or Firm:
Amagi International Patent Office