Edge-Gateway Audio-Video Sharing With Anonymous Access Control
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Solution Overview
Problem
The challenge of effectively preventing privacy leakage during the cross-domain sharing of audio-video data in smart cities, where Internet of Things devices collect and transmit large amounts of personal information, is a pressing issue that needs to be addressed.
Innovation Solution
A system and method utilizing edge gateways for obfuscation and encryption of audio-video data, including generating and obfuscating service identification information, performing encryption on identity and permission information, and calculating intersections to determine shareable data, ensuring privacy and security through a cooperation mechanism of first and second edge gateways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If audio-video data is shared across domains in smart cities, then data utility and monitoring capability are improved, but privacy leakage risk increases
Solution Approach 1:
The system segments audio-video data into multiple encrypted shards distributed across different storage nodes. Each shard alone is insufficient to reconstruct the original data, requiring a threshold number of shards for decryption. This segmentation approach enables data utility for authorized access while preventing privacy leakage through unauthorized individual access to any single node.
Solution Approach 2:
The patent introduces homomorphic encryption as an intermediary mechanism that allows computations to be performed on encrypted data without decryption. This enables data analysis and sharing operations to proceed on ciphertext, with results that can be decrypted only by authorized parties, thus maintaining privacy protection while enabling data utility across domains.
2Reliability
If encryption and obfuscation algorithms are applied to audio-video data, then privacy protection is improved, but processing complexity increases
Solution Approach 1:
The system performs preliminary encryption and obfuscation processing on audio-video data before storage and sharing operations. Data is encrypted using multiple algorithms and transformed into obfuscated representations in advance, so that subsequent retrieval and sharing operations work with already-protected data structures, reducing the complexity burden on real-time processing systems.
Solution Approach 2:
The patent employs parameter changes by switching between different encryption and obfuscation algorithms based on data sensitivity levels and access requirements. The system dynamically adjusts encryption parameters such as key lengths, algorithm types, and obfuscation intensity, optimizing the balance between privacy protection strength and processing complexity for different data scenarios.
3Reliability
If multiple edge gateways perform obfuscation and encryption operations, then security is improved, but computational resource consumption increases
Solution Approach 1:
The system extracts and separates computationally intensive encryption and obfuscation operations from the main data processing workflow, dedicating specific edge gateway resources solely to security operations. This extraction allows optimized hardware accelerators or specialized security modules to handle cryptographic computations efficiently, reducing overall computational resource consumption while maintaining high security standards.
Solution Approach 2:
The patent merges multiple encryption and obfuscation operations into unified security processing pipelines at edge gateways. By combining sequential cryptographic operations into integrated processing stages with shared resources and optimized data flows, the system reduces redundant computations and minimizes total computational resource consumption across the distributed gateway network.
4Measurement precision
If intersection calculation is performed on obfuscation sets to determine shareable data, then access control precision is improved, but processing time increases
Solution Approach 1:
The system performs partial intersection calculations by computing only the necessary portions of obfuscation set intersections required for access control decisions. Rather than calculating complete intersections of all data elements, the system identifies and processes only the critical subsets needed to determine data shareability, reducing processing time while maintaining access control precision through targeted computation.
Data Source
AI summary
Method, system and apparatus for securely sharing audio-video data based on full anonymous privacy. The system encapsulates the original audio-video data and uses an obfuscation algorithm to protect service information, such that the requirements of audio-video data sharing are met, and the privacy of data is increased; meanwhile, determines shareable audio-video data by calculating the intersection of the obfuscation sets, such that the accuracy of data access is ensured. In addition, the system further uses an encryption algorithm to protect an identity and permission of a recipient, categorizing information and grading information, only sends data that the data recipient has permission for, improving security and reducing system resources. The system the requirements of audio-video data sharing and protects the privacy and security of the audio-video data, prevents the leakage of sensitive information, and thus improves the security of audio-video data sharing.