Hashed Feature Exchange for Confidential Document Processing
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Solution Overview
Problem
Existing document processing techniques fail to securely handle confidential information when transferring data between information processing devices, leading to potential leaks.
Innovation Solution
An information processing system that includes a first device for acquiring and analyzing document data, determining features using a hash function, and exporting hashed data to a second device for processing, while maintaining confidentiality by preventing the transmission of original document data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If original document data is transmitted to external devices for processing, then processing capability is improved, but security and confidentiality deteriorate
Solution Approach 1:
The patent introduces a feature extraction unit as an intermediary component between the document data storage unit and external processing devices. This intermediary extracts only the necessary features from the original document data and transmits these features instead of the complete data, thereby enabling external processing while maintaining security and confidentiality of the original documents.
Solution Approach 2:
The patent applies the extraction principle by separating the essential features from the original document data. The feature extraction unit identifies and extracts only the necessary information (features) needed for processing, discarding the rest of the document data. This allows external devices to perform processing using only the extracted features without accessing the full original data, thus resolving the contradiction between processing capability and security.
2Reliability
If feature extraction and hashing are performed locally, then data security is improved, but processing speed and system complexity increase
Solution Approach 1:
The patent implements multi-functionality in the feature extraction unit, which performs multiple operations including morphological analysis, feature identification, and hash function application. By consolidating these functions into a single unit, the system achieves local processing capability for security without proportionally increasing overall system complexity, as the same unit serves multiple purposes in the data processing pipeline.
3Loss of substance
If only essential features are transmitted, then information loss is reduced, but processing accuracy may deteriorate
Solution Approach 1:
The patent applies parameter changes by transforming the original document data into feature representations through morphological analysis and hash functions. This transformation modifies the data parameters to extract only the essential characteristics needed for processing, reducing information loss while maintaining processing accuracy. The hash function parameters are specifically designed to preserve critical information while eliminating redundant data.
Data Source
AI summary
An information processing device includes: an acquisition unit configured to acquire document data; an analysis processing unit configured to perform morphological analysis of the document data; a feature determining unit configured to determine a feature corresponding to the document data based on a result of the morphological analysis and a hash function; an export unit configured to output export data that is data based on the feature to a second information processing device; an import unit configured to acquire a result of processing performed by the second information processing device based on the export data; and a processing unit configured to perform processing based on the result of the processing acquired by the import unit.