Fragmented Secret Information Synchronization System
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Solution Overview
Problem
Current systems face challenges in centrally managing and sharing personal information across group companies, leading to increased costs due to the need for user inquiries when information is updated in one company but not in others, despite all companies possessing the same user's information.
Innovation Solution
A management system comprising two management devices that update and extract 'old' and 'new' fragments from secret information, sending notices to alert users to update information without sharing the personal information itself, ensuring synchronization across devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If personal information is centrally managed across group companies, then information synchronization is improved, but personal information security deteriorates
Solution Approach 1:
The personal information is segmented into multiple fragments, where each fragment alone is insufficient to identify the user. Multiple management devices store different fragments of the same user's information, allowing synchronization without exposing complete personal information. This resolves the contradiction by enabling information sharing while maintaining security through fragmentation.
Solution Approach 2:
Fragmented information acts as an intermediary that enables communication and synchronization between management devices without revealing the complete personal information. The fragments serve as a mediator that allows coordination while preserving user privacy and security.
2Stability of the object's composition
If complete personal information is shared across group companies, then data consistency is improved, but data traffic and storage requirements deteriorate
Solution Approach 1:
Personal information is divided into multiple fragments that are distributed across different management devices. Only the necessary fragments are transmitted when synchronization is needed, rather than transmitting complete personal information. This reduces data traffic while maintaining data consistency across the group companies.
Solution Approach 2:
Only the specific fragments that need to be synchronized are extracted and transmitted between management devices, rather than transferring complete personal information sets. This minimizes data traffic while ensuring data consistency is maintained across the system.
Data Source
AI summary
A management system includes a first management device (110) and a second management device (120). The first management device (110) includes a first updater (111) that updates first secret information that is managed in association with a first identifier; a first extractor (112) that extracts a first old fragment and a first new fragment, the first old fragment being included in the first secret information prior to an update but not included in the first secret information subsequent to the update, the first new fragment being not included in the first secret information prior to the update but included in the first secret information subsequent to the update; and a first sender (113) that sends a first notice that specifies the first identifier, the first old fragment, and the first new fragment to the second management device (120). The second management device (120) includes a second receiver (124) that receives the first notice; and a second warning issuer (125) that warns a user using the first identifier to correct second secret information managed in association with the first identifier when the second secret information includes the first old fragment specified in the first notice but does not include the first new fragment specified in the first notice.