Blockchain Identity Data Processing With Controlled Node Access
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Solution Overview
Problem
The existing methods for digital identity management face risks of data leakage during transmission and storage, as digital identities are vulnerable to interception, compromising user personally identifiable information.
Innovation Solution
A data processing method and apparatus based on a blockchain network that involves transmitting data clearing requests to consensus nodes, generating identity presentation data, and storing it in the blockchain network with controlled access permissions, ensuring secure and decentralized data storage and circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If digital identity data is transmitted directly from issuer to holder, then identification efficiency is improved, but data security deteriorates due to interception risks
Solution Approach 1:
The patent introduces a blockchain network as an intermediary mechanism between the issuer and holder. The issuer publishes identity data to the blockchain, and the holder retrieves it through the blockchain network, eliminating direct transmission. This intermediary layer prevents interception while maintaining identification efficiency, as the blockchain provides a secure, decentralized transmission channel.
2Productivity
If digital identity data is stored centrally, then access efficiency is improved, but vulnerability to data leakage increases
Solution Approach 1:
The patent segments the centralized storage system into a distributed blockchain network where identity data is stored across multiple nodes rather than a single central repository. This segmentation eliminates the single point of failure and reduces data leakage risk, while maintaining access efficiency through the decentralized network architecture that allows any authorized node to retrieve data.
3Speed
If identity data is made publicly accessible, then identification speed is improved, but information security deteriorates
Solution Approach 1:
The patent applies local quality by making identity data accessible to specific authorized nodes (holders and verifiers) on the blockchain network while maintaining security through cryptographic permissions. The data is not universally public but is locally accessible to designated participants, enabling fast identification for authorized users while preventing unauthorized access and information leakage.
Data Source
AI summary
A data processing method based on a blockchain network includes: transmitting a first data clearing request to a consensus node of the blockchain network and receiving claim data returned by the consensus node in response to the first data clearing request, the returned claim data being claim data associated with a holder node in the blockchain network obtained by clearing; generating identity presentation data of the holder node based on the claim data; determining a first visible node identification of a node having access to the identity presentation data; and storing the identity presentation data and the first visible node identification in a blockchain of the blockchain network.