File Operation Traceability via Embedded Header and Cloud Storage
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Solution Overview
Problem
Existing file usage systems struggle to trace file operations after files are decrypted and used, making it difficult to track file usage and identify the source of file leakage.
Innovation Solution
A file operation record traceability system that includes an intelligent terminal, a cloud server, and a management terminal, where a preset file header with file mark and flow information is added to the original file, allowing the system to record and trace file operations, and upload this information to the cloud server for storage and retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If files are encrypted and decrypted for use in cloud systems, then file security is improved, but operation traceability deteriorates
Solution Approach 1:
The patent applies preliminary action by embedding traceability information (file mark information, user information, operation records) into the file header before the file is used. This ensures that even after encryption and decryption, the traceability data remains intact and can be retrieved later, solving the contradiction between security and traceability.
Solution Approach 2:
The patent uses an intermediary approach by introducing a cloud server as a mediator between the intelligent terminal and management terminal. The cloud server stores and manages traceability information, allowing secure file operations while maintaining traceability through the intermediary storage layer.
2Reliability
If proprietary tools are installed on clients for file encryption, then file security is improved, but system complexity deteriorates
Solution Approach 1:
The patent applies universality by using the operating system's built-in file header structure to store traceability information, rather than requiring proprietary tools. The operating system itself serves multiple functions: file operation, encryption/decryption, and traceability recording, thereby reducing system complexity while maintaining security.
3Loss of information
If file operation records are recorded locally, then traceability is improved, but information storage capacity deteriorates
Solution Approach 1:
The patent applies dimensionality change by moving from local storage to cloud-based storage. The traceability information is stored in the cloud server's database, utilizing external storage capacity rather than local device capacity. This allows unlimited storage capacity while maintaining complete traceability records.
Data Source
AI summary
The invention relates to a file operation record traceability system and traceability method. In the system, an intelligent terminal adds a preset file containing file mark information and file flow information header to an original file to generate a target file. The operating system of the intelligent terminal records the operation record information of the target file. The intelligent terminal uploads the operation record information, the file mark information and the current user information in the file flow information to the cloud server for storage. The management terminal sends a viewing request to the cloud server, and the cloud server sends the operation record information and the user information to the management terminal. The invention uses the file header and the operating system to record the file operation record, and uses the cloud to store the file operation record, thus conveniently tracing the whole usage process of the file.