Information Processing Apparatus Offline Operation History Tracking
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Solution Overview
Problem
Existing information processing systems face challenges in managing operation history information for shared data, particularly when terminal devices disconnect from the network, leading to potential unauthorized operations and difficulties in tracking data usage and leaks.
Innovation Solution
An information processing apparatus with a storing unit, receiving unit, removal unit, and specifying unit that stores shared data, receives removal instructions, removes data, and specifies the transmitter of operation history information using encryption key information, allowing for valid operation history tracking and fraud detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If operation history information is stored for all shared data including removed data, then tracking accuracy is improved, but storage complexity increases
Solution Approach 1:
The patent segments operation history information into two distinct storage locations: a first storage unit for current shared data and its operation history, and a second storage unit (recycle bin) for removed shared data and its operation history. This segmentation allows the system to maintain comprehensive tracking accuracy while organizing storage complexity into manageable, purpose-specific segments rather than a monolithic storage structure.
2Reliability
If the system validates operation history information using encryption keys, then security is improved, but processing time increases
Solution Approach 1:
The patent implements preliminary action by pre-attaching encryption keys to operation history information at the time of operation recording, rather than performing key retrieval and validation during the verification phase. The specifying unit uses these pre-attached keys to efficiently validate authenticity, maintaining high security while minimizing processing time during verification operations.
3Ease of operation
If the system allows offline operations for 24 hours, then user convenience is improved, but risk of unauthorized operations increases
Solution Approach 1:
The patent implements periodic action by establishing a fixed 24-hour offline operation window for terminal devices. During this periodic interval, devices can operate offline with stored encryption keys, providing user convenience. After the period expires, the system requires reconnection for key updates, creating a regular security refresh cycle that limits the window for unauthorized operations while maintaining usability.
Data Source
AI summary
An information processing apparatus includes first and second staring units, a receiving unit, and a remove unit, a specifying unit. The first storing unit stores shared data which is to be shared and used by plural persons, and specific information for specifying the shared data. The receiving unit receives a removal instruction to remove the shared data. The remove unit removes from the first storing unit the shared data corresponding to the removal instruction received by the receiving unit. The specifying unit specifies a transmitter of operation history information which is received by the receiving unit, by using the specific information. If after the shared data is removed by the remove unit, the received operation history information for the removed shared data is specified by the specifying unit, the second storing unit stores the operation history information as operation history information for the removed shared data.