Electronic Device Data Sharing via Blockchain Access Control
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Solution Overview
Problem
Existing data sharing methods, such as through normal messenger applications and clouds, lack control over data sharing ranges and are vulnerable to data leaks and unauthorized re-sharing, compromising data security and ownership.
Innovation Solution
An electronic device generates a public key and blockchain address, forms a blockchain network with external devices, and stores network information in an external server, using attestation keys to ensure secure data sharing and control access through a blockchain ledger.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If data is shared through a normal messenger application, then data sharing is simple and convenient, but the data owner cannot prevent unauthorized re-sharing and loses data ownership control
Solution Approach 1:
The patent introduces a blockchain network as an intermediary between the data owner and data sharers. The blockchain ledger records and verifies data sharing permissions, preventing unauthorized re-sharing while maintaining operational convenience. The smart contract automatically enforces ownership rules without requiring complex manual control mechanisms.
2Productivity
If data is shared through a cloud, then data storage and access are improved, but private data can be leaked due to hacking accidents
Solution Approach 1:
The patent replaces the traditional centralized cloud storage mechanism with a decentralized blockchain-based storage system. Data is encrypted and distributed across multiple nodes rather than stored in a single centralized location, making it resistant to hacking and data leakage while maintaining efficient access through cryptographic key management.
3Reliability
If a blockchain network is implemented for secure data sharing, then data security and ownership control are improved, but system complexity increases
Solution Approach 1:
The patent designs the blockchain network to serve multiple functions simultaneously: it acts as a security layer for data protection, a permission management system for ownership control, and a transparent audit trail for tracking data sharing. This multi-functionality reduces the need for separate systems and mitigates complexity.
4Reliability
If data sharing permissions are strictly controlled through blockchain, then unauthorized re-sharing is prevented, but flexibility in data sharing is reduced
Solution Approach 1:
The patent implements dynamic permission management through smart contracts that can be updated and modified based on changing requirements. Data owners can grant, revoke, or modify sharing permissions at any time, and the blockchain network automatically adjusts access rights without requiring system reconfiguration, thus maintaining both control and flexibility.
Data Source
AI summary
An electronic device in an example embodiment includes: a communication circuit configured to transmit and/or receive a signal; a memory configured to store instructions; and at least one processor operatively connected with the communication circuit and the memory. The at least one processor generates a public key regarding a user of the electronic device and a blockchain address; determines an external electronic device to share data; transmits, to the external electronic device through the communication circuit, an invitation message including information regarding the public key and the blockchain address; based on a response message, received from the external electronic device in response to the invitation message, generates a blockchain network including the external electronic device as a node; and stores information regarding the blockchain network in an external server. Various other embodiments that can be understood through the specification are possible.