Vehicle Crash Data Storage Using Encrypted Cross-Vehicle Backup
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Solution Overview
Problem
Accident information stored in a vehicle's storage device may be lost due to physical damage during an accident, making it difficult to securely retain and retrieve critical data.
Innovation Solution
An electronic apparatus for vehicles equipped with a non-volatile memory and processor that encrypts and stores vehicle information using public keys, ensuring secure storage and transmission to a server, with the option to sign using private keys and store in non-rewritable memory to prevent data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If accident information is stored in the vehicle's storage device, then the information can be retained for analysis, but the information may be lost due to physical damage during the accident
Solution Approach 1:
The system divides the information storage function into two separate locations: the vehicle's own storage device and other connected vehicles' storage devices. By segmenting the storage location, the system ensures that if one storage device is damaged, the information still exists in another location, thereby resolving the contradiction between information retention reliability and physical damage risk.
Solution Approach 2:
Other connected vehicles act as intermediaries to store accident information. Instead of relying solely on the victim vehicle's storage device, the system uses nearby vehicles as intermediary storage nodes. This mediator approach ensures information preservation even when the original storage device suffers physical damage.
2Ease of operation
If the vehicle stores accident information locally, then quick access is possible, but data privacy and security may be compromised
Solution Approach 1:
The system creates copies of accident information and distributes them to other connected vehicles. Instead of keeping the original information in one location, multiple copies are stored across different vehicles. This copying mechanism maintains fast access capability while distributing privacy risk across multiple independent storage locations.
Solution Approach 2:
Different vehicles store different portions or types of information based on their local capabilities and roles. The system assigns different storage responsibilities to different vehicles, with each vehicle having specific quality characteristics for its stored data. This local quality differentiation enhances both access efficiency and security.
3Object-generated harmful factors
If encryption is used to protect stored information, then data security is improved, but processing and retrieval complexity increases
Solution Approach 1:
The system performs encryption actions in advance, before the accident occurs or immediately when information is generated. By preliminarily encrypting the data and storing encryption keys separately, the system reduces the complexity of real-time processing during accident analysis while maintaining strong security protection.
Data Source
AI summary
An electronic apparatus mounted on a first vehicle collects information of a second vehicle connected to the first vehicle, encrypts the information of the second vehicle based on a public key of the second vehicle to generate encrypted information, and stores encrypted information in a storage device.