Communication Device Distributed Trust Management

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Solution Overview

Problem

In communication systems using the TCP/IP protocol, ensuring the trustworthiness of transmitted information is challenging due to the potential for packet falsification during data transmission among multiple computation nodes.

Innovation Solution

A communication device and computation node group system where header information is registered and managed across multiple nodes, allowing for trust verification and reducing computational load by distributing trust information and header management, with mechanisms to detect and prevent falsification using encrypted communication and a blockchain-like data structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If information is managed by being distributed among multiple computation nodes, then the difficulty of falsifying information increases and trustworthiness improves, but the device complexity and difficulty of managing distributed information increases

Engineering Contradiction:

Improvetrustworthiness of communicationVSAvoidcomplexity of distributed management system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the trust management system into multiple independent computation nodes, each maintaining copies of management information. This segmentation allows the system to achieve higher reliability through distribution while managing complexity by making each node independent and interchangeable.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a blockchain structure as an intermediary mechanism that mediates trust verification among computation nodes. The blockchain serves as a shared ledger that all nodes can verify without requiring direct trust relationships, simplifying the management of distributed trust information.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If header information is registered and managed across multiple nodes, then the ability to detect packet falsification improves, but the loss of time for registration and verification processes increases

Engineering Contradiction:

Improvedetection accuracy of packet falsificationVSAvoidtime for header registration and verification

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent performs preliminary registration of header information in the blockchain before packet transmission occurs. By pre-registering the expected header data, the system enables rapid verification during packet reception without requiring time-consuming analysis of packet contents, thus reducing verification time while maintaining high detection accuracy.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If the communication device uses a distributed trust management system, then the trustworthiness of communication is enhanced, but the computational load and energy consumption increases

Engineering Contradiction:

Improvetrustworthiness of communicationVSAvoidcomputational energy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent extracts only the essential header information needed for trust verification from complete packets and registers only these critical elements in the blockchain. This extraction approach reduces the amount of data that needs to be processed and stored across the distributed system, thereby lowering computational energy consumption while maintaining effective falsification detection.

Inventive Principle:

Principle #2Taking out (Extraction)

4Strength

If multiple computation nodes are used to manage header information, then the system becomes more resistant to falsification, but the device complexity and coordination requirements increase

Engineering Contradiction:

Improveresistance to information falsificationVSAvoidcomplexity of multi-node coordination

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The patent merges the trust verification functionality into a standardized blockchain structure that all computation nodes follow uniformly. By combining individual node verification capabilities into a collective blockchain consensus mechanism, the system achieves strong resistance to falsification while reducing coordination complexity through standardized protocols.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11570284B2Communication device, communication system, and non-transitory computer readable medium

Publication Date: 2023.01.31 FUJIFILM BUSINESS INNOVATION CORP

AI summary

A communication device includes a transmission unit and a processing unit. The transmission unit transmits a packet group including multiple packets. In a case in which the communication device itself is not trusted by a destination communication device to which to transmit the packet group, the processing unit performs a process of instructing each of multiple nodes of a management unit that registers and manages management information distributed among the multiple nodes to register header information as the management information, the header information being partial information of a header included in each packet of the packet group transmitted by the transmission unit.