Dashboard Camera Cloud Validation With Cryptographic Checksums
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Solution Overview
Problem
Existing dashboard cameras lack a reliable method to ensure the integrity of captured video footage, making it susceptible to alteration, which compromises its use as legal evidence due to advancements in video manipulation technologies.
Innovation Solution
A system that digitally encrypts and uploads video files with cryptographic checksums, ensuring a chain of custody by using asymmetric cryptography, allowing third parties to verify the authenticity of the footage through public-key comparison.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If video footage is stored without cryptographic verification, then storage and access are simple and fast, but the integrity and authenticity of the video evidence cannot be guaranteed
Solution Approach 1:
The system calculates and stores cryptographic checksums of video footage at the time of recording, before any potential alteration can occur. This preliminary cryptographic verification establishes a baseline for future integrity checks, ensuring that any subsequent modifications to the video file will be detectable through checksum mismatch.
Solution Approach 2:
The patent introduces cryptographic checksums as an intermediary verification mechanism between the video footage and the storage system. These checksums act as digital fingerprints that mediate the verification process, allowing third parties to authenticate video integrity without needing access to the original recording device or complex verification systems.
2Reliability
If video files are encrypted with asymmetric cryptography, then privacy protection is enhanced, but processing and verification time increases
Solution Approach 1:
The system extracts and separates the cryptographic verification elements (checksums and metadata) from the main video file content. By storing these verification elements independently alongside the encrypted video footage, the system enables rapid authentication of video integrity without requiring decryption or processing of the entire video file, thus minimizing time loss while maintaining strong privacy protection.
3Measurement precision
If a chain of custody system is implemented, then authenticity verification is improved, but the system complexity and computational requirements increase
Solution Approach 1:
The patent creates cryptographic copies (checksums) of the video file's digital fingerprint rather than managing complex metadata about the entire file structure, device information, and chain of custody events. These simplified cryptographic copies serve as verifiable proofs of authenticity that can be easily stored, transmitted, and verified by third parties without requiring complex verification infrastructure.
Data Source
AI summary
A system and method for recording, backing up, and authenticating footage from a dash cam or other video device comprises continuously synchronizing checksums from segments of video as they are recorded into rolling storage with an authentication server located remotely. Only metadata is uploaded until the video device experiences an interrupt event, at which point the last few rolling segments, as well as subsequent rolling segments until the termination of the interrupt event, are written to persistent storage and uploaded to the authentication server at the earliest opportunity. The metadata and video are encrypted with an asymmetric public/private key system enabling third parties to confirm, with the public key, that the metadata on the recording device and the authentication server match, and with the private key, download the video footage from the interrupt event.