Media Data Stream Hash Verification for Trustworthy Content
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Solution Overview
Problem
Existing media data stream standards lack a method for verifying the authenticity and trustworthiness of content, particularly in the face of AI-generated deep fakes, which can lead to copyright infringements and trust issues.
Innovation Solution
Implementing a system that hashes a predetermined portion of the media data stream to generate a digital signature, which is then transmitted and checked against the hash value to verify trustworthiness, allowing flexible and robust verification while maintaining standard compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a digital signature is transmitted in the media data stream to verify authenticity, then trustworthiness verification is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential verification element (digital signature) from the complete verification process and transmits it in the media data stream. This allows receivers to verify authenticity without transmitting the entire verification mechanism, thereby reducing signaling overhead while maintaining trustworthiness verification capability.
Solution Approach 2:
The patent changes the parameter of verification data from complete media content to a condensed digital signature representation. This parameter transformation enables efficient transmission and storage while preserving the essential verification function, balancing reliability improvement with overhead reduction.
2Measurement precision
If the entire media data stream is hashed for verification, then verification accuracy is improved, but computational complexity and data size increase
Solution Approach 1:
The patent extracts a digital signature from the media data stream and transmits it separately. This extraction allows verification to be performed on a condensed representation rather than the entire data stream, reducing data size while maintaining verification accuracy through the cryptographic properties of digital signatures.
Solution Approach 2:
The patent performs hashing and digital signature generation as preliminary actions during the encoding phase. This preliminary computation creates a compact verification token that can be transmitted and verified efficiently later, avoiding the need to reprocess the entire media data stream during verification.
3Reliability
If verification is performed on the complete media stream, then security level is improved, but processing time increases
Solution Approach 1:
The patent performs the computationally intensive hashing and digital signature generation as preliminary actions during encoding. This shifts the processing burden to the encoding phase, allowing the verification phase to operate on the already-computed digital signature, thereby reducing verification processing time while maintaining security level.
Solution Approach 2:
The patent creates a cryptographic copy (digital signature) of the media data stream's essential verification properties. This copy can be verified quickly without processing the entire original data stream, reducing processing time while maintaining security through the cryptographic link between the signature and the original content.
Data Source
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AI summary
A method for checking a media data stream having a media stream encoded thereinto on trustworthiness comprises: subjecting a predetermined portion of the media data stream, or data derived therefrom, to a hash function to obtain a hash value; deriving a digital signature from the media data stream; and checking whether the hash value fits to the digital signature to determine whether the media data stream is trustworthy.