Distributed Cloud File Segmentation for Authenticated Data Sharing
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Solution Overview
Problem
Existing systems do not allow individuals to securely share data with authorized third parties, as third parties can only view information generated by an individual, preventing secure data transfer.
Innovation Solution
An information processing system with a first terminal, authentication server, and second terminal that distributes files across multiple clouds, authenticates users, and allows authorized users to acquire and restore divided files.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an individual stores information in a distributed manner across multiple clouds, then data security and reliability are improved, but the ability to share data with authorized third parties deteriorates
Solution Approach 1:
The original file is divided into multiple divided files that are distributed across different clouds. Each divided file contains only a portion of the original data, making it impossible to reconstruct the complete information without all segments. This segmentation enables secure distributed storage while controlling access - authorized third parties can only access specific divided files with proper authentication, preventing unauthorized reconstruction of the complete data set.
2Object-affected harmful factors
If a third party can only view information generated by an individual, then privacy protection is improved, but the ability to transfer data to authorized third parties deteriorates
Solution Approach 1:
The system introduces an authentication server as an intermediary between the information provider and authorized third parties. The authentication server verifies the identity and authorization status of third parties before allowing them to access divided files. This intermediary mechanism enables controlled data transfer to authorized individuals while maintaining privacy protection - only authenticated and authorized users can retrieve specific divided files, ensuring that data sharing occurs only with permitted recipients.
Data Source
AI summary
An information processing system (100) includes a first terminal (4A), an authentication server (1), and a second terminal (4B). The first terminal (4A) stores, into a plurality of clouds (3) in a distributed manner, a plurality of divided files generated by dividing a file including data of information generated by a first user into a plurality of files. The authentication server (1) authenticates a user to be the user himself or herself. The second terminal (4B) acquires a plurality of divided files distributed across a plurality of clouds (3) by the first terminal (4A) when a second user using the second terminal (4B) is authenticated to be the second user himself or herself by the authentication server (1). The second terminal (4B) acquires a file including data of information generated by the first user by restoring the acquired plurality of divided files.