Read-Protected Storage Logging with Separate Physical Interfaces
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Solution Overview
Problem
Existing storage devices lack effective physical interfaces to ensure write-only access and secure reading of sensitive data, particularly in environments where privacy protection is critical, such as automotive applications.
Innovation Solution
Implementing a write-only storage logging device with a designated controller that uses separate physical connections for writing and reading, allowing secure reading through a distinct interface and enabling LBA ranges for both read/write and write-only access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single interface is used for both reading and writing data, then device complexity is reduced, but data privacy security is compromised
Solution Approach 1:
The patent divides the single interface into two separate physical interfaces: a first interface dedicated for writing data and a second interface dedicated for reading data. This segmentation ensures that write operations and read operations occur through distinct physical pathways, preventing unauthorized read access through the write interface and thereby enhancing data privacy security while maintaining manageable device complexity through clear functional separation.
2Reliability
If separate physical interfaces are used for writing and reading, then data privacy security is enhanced, but device complexity increases
Solution Approach 1:
The patent applies local quality by assigning specific functional characteristics to each interface: the first interface is configured with write-only capabilities and the second interface with read-only capabilities. This localized functional differentiation ensures that each interface is optimized for its specific purpose, enhancing security through dedicated access control while managing overall system complexity through clear, localized functional assignments rather than requiring complex centralized control mechanisms.
3Reliability
If write-only LBA ranges are implemented, then privacy protection is improved, but ease of operation is reduced
Solution Approach 1:
The patent segments the storage space into distinct LBA ranges: write-only LBA ranges that accept only write operations for privacy-protected data, and normal LBA ranges that allow both read and write operations. This segmentation enables automatic overwriting of sequential streams in the write-only regions while maintaining traditional file system access in normal regions, thereby protecting privacy through enforced write-only access patterns without significantly impacting ease of operation for non-sensitive data.
Data Source
AI summary
Instead of incorporating a single interface towards the host for transferring data, utilizing a designated write-only storage logging device. The write-only storage logging device can accept sequential streams and automatically overwrite. The controller will read the log material in a secure manner using a different and separate physical connection than the one used for write. The storage device may have LBA ranges that work as write-only as well as other LBA ranges, which are normal (both reads and writes are enabled). Both options will allow for a traditional file system as well as sharing the storage, but will still protect the log areas that would be used for events that should not be read out.