Vehicle Component File Signing for Secure Server Verification
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Solution Overview
Problem
Current vehicle systems face challenges in securely transmitting component calibration and configuration files, leading to potential system failures, outages, and data theft due to insecure data transmission.
Innovation Solution
A method for secure signed file upload of component calibration and configuration files using a server-based verification system that parses and verifies the file signature and format, ensuring authenticity and adherence to predetermined limits, with on-board or off-board processors managing the upload process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If file transmission is performed without signature verification, then transmission speed is improved, but security and reliability deteriorate
Solution Approach 1:
The patent applies preliminary action by generating and attaching file signatures to calibration and configuration files before transmission. The signature is created using cryptographic algorithms based on file content and transmitted together with the file, enabling the receiving device to verify authenticity and integrity before processing the file, thus preventing unauthorized or corrupted files from causing system failures.
Solution Approach 2:
The patent uses a signature verification mechanism as an intermediary between file transmission and file execution. The verification process acts as a gatekeeper that checks the digital signature against the file content, ensuring that only authenticated and unmodified files are accepted by the vehicle's control systems, thereby maintaining security without blocking legitimate file transfers.
2Reliability
If signature verification is implemented, then security and reliability are improved, but processing time and complexity increase
Solution Approach 1:
The patent uses cryptographic hashing to create a compact digital signature (copy) of the file's essential characteristics. Instead of transmitting or storing the entire file for verification purposes, the system generates a condensed hash value that serves as the signature. This copying approach maintains security while minimizing the additional data burden and processing overhead.
3Reliability
If signature verification is implemented, then security and reliability are improved, but processing time increases
Solution Approach 1:
The patent extracts only the essential verification elements (digital signature and hash algorithm) from the complete file verification process. By separating the signature verification step from the file processing workflow, the system can quickly validate file authenticity using pre-computed signatures without requiring full file analysis, thus minimizing the time added to the overall processing pipeline.
Data Source
AI summary
An example operation includes one or more of receiving at a server at least one of a component calibration file and a component configuration file from a vehicle, receiving at the server a file signature of the at least one of the component calibration file and the component configuration file from the vehicle, parsing via the server the at least one of the component calibration file and the component configuration file based on the file signature and verifying via the server the at least one of the component calibration file and the component configuration file based on the file signature.