Virtual Device Shared File Security via Controller Segmentation
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Solution Overview
Problem
Virtual devices sharing files pose security risks due to potential modifications by one virtual device affecting others, leading to unprotected storage and security breaches.
Innovation Solution
Implementing a controller that creates an alternative exclusive file when a shared file is modified, denying access to the modifying virtual device and requesting restoration from outside sources, ensuring the original shared file remains unmodified and secure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If virtual devices share files to improve resource utilization, then storage efficiency is improved, but security protection deteriorates because modifications by one virtual device can affect others
Solution Approach 1:
The patent segments the shared file into multiple versions (original shared file and alternative files) with different access permissions. Each virtual device is assigned specific access rights to different versions, allowing storage efficiency to be maintained while security is protected through segmented access control.
Solution Approach 2:
The patent applies local quality by giving different access permissions to different virtual devices for the same file. The controller manages read-only access for some devices and read-write access for others, allowing storage efficiency while maintaining security through localized permission assignment.
2Adaptability or versatility
If a virtual device is allowed to modify shared files to improve functionality, then adaptability is improved, but security protection deteriorates because other virtual devices may be affected by unauthorized modifications
Solution Approach 1:
The controller acts as an intermediary between virtual devices and shared files. It manages modification requests by creating alternative files when modifications are needed, allowing functional adaptability while maintaining security protection through centralized mediation.
Solution Approach 2:
The patent uses copying by creating alternative files when modifications are required. The original shared file remains intact and protected, while modified versions are created as separate copies, allowing functionality improvement without compromising security.
3Reliability
If access control is implemented to protect shared files, then security protection is improved, but device complexity increases due to additional management mechanisms
Solution Approach 1:
The system implements self-service by automatically creating alternative files and managing access permissions when modifications are detected. The controller autonomously handles security management tasks, improving security protection while minimizing the complexity burden on users.
Data Source
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AI summary
Disclosed is an electronic device comprising: a storage configured to store a shared file shared between a plurality of virtual devices; and a controller configured to create an alternative film by copying the shared file when a first virtual device of the plurality of virtual devices makes a request for modifying the shared file, and control a second virtual device, which desires to share the shared file, to refer to the alternative file.