Cryptographic Digital Signatures for Video Authenticity Verification
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Solution Overview
Problem
The rapid development of realistic image and video synthesis technologies makes it difficult to discern transformed content from original content, leading to challenges in determining authenticity, especially as transformed content can be widely distributed and manipulated, potentially distorting user perceptions.
Innovation Solution
A system that digitally signs multimedia content at the moment of capture using cryptographic material stored in a secure module, generating a digital signature for each frame of video content and maintaining a manifest of modifications, allowing authentication services to verify the authenticity of distributed content by comparing original and modified versions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If content transformation technologies are advanced to make transformed content indistinguishable from original content, then the realism and quality of transformed content is improved, but the ability to detect and measure authenticity deteriorates
Solution Approach 1:
The patent applies preliminary action by embedding cryptographic signatures and authenticity markers into the content at the moment of capture or creation, before any transformation occurs. This allows the original authentic state to be recorded and later compared against transformed versions, enabling detection even when transformations are highly realistic.
Solution Approach 2:
The patent introduces cryptographic signatures and authenticity verification systems as intermediaries between the original content and its transformed versions. These intermediaries provide a reliable mechanism to verify authenticity without being affected by the quality of transformation, solving the problem of detecting authenticity in highly realistic transformed content.
2Adaptability or versatility
If content is widely distributed across the Internet, then the reach and accessibility of content is improved, but the risk of distortion and loss of information increases
Solution Approach 1:
The patent implements feedback mechanisms where authenticity verification results are provided back to users and systems distributing content. This allows continuous monitoring and verification of content integrity throughout the distribution chain, enabling detection and correction of distortions before they propagate further.
Solution Approach 2:
The patent applies preliminary action by pre-marking content with cryptographic identifiers and authenticity data before distribution. This allows any subsequent version of the content to be verified against the original marked version, preventing loss of information accuracy even as content spreads widely across the Internet.
3Reliability
If cryptographic verification systems are implemented for all content, then the security and authenticity verification is improved, but the device complexity and processing requirements increase
Solution Approach 1:
The patent extracts the complex cryptographic verification operations from end-user devices and concentrates them in dedicated authentication services and servers. End devices only need to perform simple operations like displaying verification results, while the heavy computational burden of cryptographic verification is handled by specialized systems with appropriate resources.
Data Source
AI summary
A system, method, and computer readable medium for determining authenticity of digital content. The system includes obtaining a video including a plurality of intermediate video frames with respective digital signatures, each video frame of the plurality of intermediate video frames associated with a respective digital signature. The digital signature is generated based at least in part on the image content of the video frame and a hash value of a previous video frame in the same video. Based on using a cryptographic key associated with a recording device used to capture the video, the system can determine authenticity of the content and the ordering of the frames within a video.