Distributed Ledger Authority Delegation Limiting Mechanism

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Solution Overview

Problem

In consortium-type distributed ledger networks, delegating the operation of distributed ledger nodes to agents poses security risks due to the potential for unauthorized access and tampering, as a single agent can manage multiple organizations' keys, compromising the integrity of the network.

Innovation Solution

A distributed ledger system that implements an authority delegation management mechanism, where each distributed ledger node checks if the total number of delegations exceeds an upper limit before allowing new management authority delegation, and uses smart contracts to manage and update authority delegation information, ensuring that only permitted agents can operate the network.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If management authority is delegated to agents to enable operations related to the distributed ledger network, then ease of operation is improved, but reliability deteriorates due to security risks from unauthorized access and tampering

Engineering Contradiction:
Improveease of operationVSAvoidreliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent changes the parameter of delegation control from unrestricted to limited by introducing an upper limit on the number of delegations. This parameter change resolves the contradiction by allowing operational ease through delegation while maintaining reliability through quantitative constraints on delegation scope

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent implements feedback mechanisms where distributed ledger nodes continuously monitor and verify authority delegation information stored in the distributed ledger. This feedback loop ensures that delegation operations are tracked and validated, maintaining system reliability while enabling operational flexibility

Inventive Principle:
Principle #23Feedback

2Ease of operation

If the number of delegations is increased to allow more agents to operate the network, then ease of operation is improved, but security risks increase due to potential network tampering

Engineering Contradiction:
Improveease of operationVSAvoidsecurity risks
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent applies parameter changes by establishing an upper limit on the number of delegations. This quantitative constraint directly addresses the security risk by preventing excessive delegation while still allowing sufficient operational flexibility through controlled delegation numbers

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent implements preliminary anti-action by pre-establishing delegation limits and verification mechanisms before security issues can arise. The system proactively prevents potential tampering by constraining delegation scope in advance rather than reacting to security incidents

Inventive Principle:
Principle #9Preliminary anti-action

Data Source

PatentUS20240428255A1Distributed ledger system and control method for distributed ledger system
Publication Date: 2024.12.26 HITACHI LTD
  • US20240428255A1 patent drawing
  • US20240428255A1 patent drawing
  • US20240428255A1 patent drawing

AI summary

In a distributed ledger system that provides a consortium-type distributed ledger network, an upper limit number of management authorities to be delegated to an agent in the entire distributed ledger network is stored, and the current total number of delegations of management authority to the agent in the entire distributed ledger network is managed in a distributed ledger. A distributed ledger node, upon receiving a transaction requesting the delegation of new management authority, executes a first smart contract. The first smart contract determines whether the total number of delegations will exceed the upper limit number of delegations by delegating new management authority, and where the total number of delegations exceeds the upper limit number of delegations, determines to reject the request, and where the total number of delegations is less than the upper limit number of delegations, delegates new management authority and updates authority delegation information in the distributed ledger.