Adaptive Privacy Controls for Lossy File Segmentation
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Solution Overview
Problem
Existing systems fail to provide effective, user-defined access permission settings for lossy file formats, particularly multimedia files like JPEGs, which are essential for secure sharing and privacy control over networks, as they lack fine-grained control over access and encryption for different recipients.
Innovation Solution
The implementation of Adaptive Privacy Controls (APC) that allow users to set customized access permissions by hiding and encrypting specific portions of lossy files, enabling authorized recipients to decrypt and reconstruct the original content while preventing unauthorized access, using techniques like obfuscation and encryption within the file structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If lossy compression is used to reduce file size for storage and transmission, then file size is reduced and transmission efficiency is improved, but information loss occurs and security control capability deteriorates
Solution Approach 1:
The patent embeds secret information, encryption keys, and access control data within the header properties of lossy files. The hidden information is nested inside the file structure itself, allowing secure data to be carried along with the compressed content without increasing external file size.
Solution Approach 2:
The patent uses header properties as an intermediary carrier to transport access control information and encryption keys. This intermediary mechanism enables security controls to be implemented without altering the core compressed content, resolving the conflict between compression and security.
2Reliability
If access permission settings are implemented for lossy files, then security and privacy control are improved, but system complexity increases
Solution Approach 1:
The patent implements a universal access control system that works across different lossy file formats (images, audio, video) by utilizing their common header property structures. This multi-functional approach allows the same security mechanism to be applied universally without format-specific complexity.
Solution Approach 2:
The patent controls security parameters (access permissions, encryption keys, recipient lists) by modifying header properties of the lossy files. By changing parameters within the existing file structure rather than adding complex external systems, security is enhanced with minimal complexity increase.
3Measurement precision
If fine-grained access control is applied to specific portions of lossy files, then privacy control precision is improved, but processing complexity increases
Solution Approach 1:
The patent divides the lossy file into segments with different access control levels by applying permissions to specific header properties and portions of content. This segmentation allows fine-grained control over different parts of the file without requiring complex processing of the entire file structure.
Solution Approach 2:
The patent applies different access control qualities to different portions of the lossy file. Specific header properties and content segments can have customized permission settings, encryption keys, and recipient lists, allowing local quality variations in security control without global complexity.
Data Source
AI summary
The proliferation of personal computing devices in recent years, especially mobile personal computing devices, combined with a growth in the number of widely-used communications formats has led to increased concerns regarding the safety and security of documents and messages that are sent over networks. Users desire a system that provides for the setting of custom access permissions at a file-level or sub-file-level. Such a system may allow the user to apply customized privacy settings (and, optionally, encryption keys) differently to particular portions of a document—even if the document is of a ‘lossy’ file type, e.g., a JPEG image. According to some embodiments, the custom access permission settings may be implemented by obfuscating portions of the original file and then embedding “secret,” e.g., hidden and/or encrypted, versions of the obfuscated portions in parts of the data structure of the original lossy file before transmitting the file to the desired recipients.