Communication Control Devices for Social Infrastructure Security

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Solution Overview

Problem

Social infrastructure systems, such as monitoring cameras, face challenges in maintaining security due to the difficulty in frequently replacing equipment, leading to insufficient security measures.

Innovation Solution

A communication control system comprising first and second communication control devices that perform mutual authentication and encryption/decryption processes using secret keys and certificates, enhancing security without altering existing infrastructure by encrypting data transmitted between client and server devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If equipment in social infrastructure systems is frequently replaced to improve security, then security measures are improved, but equipment replacement difficulty and system stability are worsened

Engineering Contradiction:
ImprovesecurityVSAvoidequipment replacement difficulty
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces communication control devices as intermediaries between client devices and server devices. These control devices perform authentication and encryption/decryption operations, isolating the client and server devices from direct security-critical operations. This allows security improvements to be implemented in the control devices without requiring changes to the existing client and server equipment in the social infrastructure system.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent segments the communication system into distinct functional components: client devices, communication control devices, and server devices. By separating authentication and encryption functions into dedicated control devices, the system can upgrade security measures in the control devices independently while maintaining compatibility with existing client and server equipment.

Inventive Principle:
Principle #1Segmentation

2Reliability

If authentication and encryption processes are added to enhance security, then security measures are improved, but communication system complexity is worsened

Engineering Contradiction:
ImprovesecurityVSAvoidcommunication system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines authentication and encryption/decryption functions into integrated communication control devices. Rather than adding separate authentication systems and encryption systems, the control devices perform both functions in a unified architecture, managing secret keys and certificates while handling both authentication verification and data encryption/decryption operations.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If mutual authentication and encryption/decryption processes are implemented, then data security is improved, but communication time and processing overhead are worsened

Engineering Contradiction:
Improvedata securityVSAvoidcommunication time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent implements preliminary authentication between communication control devices before actual data transmission occurs. Secret keys and certificates are exchanged and verified in advance during connection establishment. This preliminary action ensures that subsequent data communications can proceed with already-established security parameters, reducing the time overhead for each individual data transfer.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11431706B2Communication control system and communication control device
Publication Date: 2022.08.30 KK TOSHIBA
  • US11431706B2 patent drawing
  • US11431706B2 patent drawing
  • US11431706B2 patent drawing

AI summary

A communication control system includes a first communication control device and a second signal processing device. The first communication control device is connected to a client terminal device and a network communication grid. The second communication control device is connected to a server terminal device and the network communication grid.