Segment-Level Media Authentication for Alteration Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing media content authentication systems are inadequate in detecting alterations at a segment level, failing to provide detailed information about modified aspects and allowing misinformation to spread, especially in contexts like social media sharing and video conferencing.
Innovation Solution
A system that embeds segment-level signatures using public/private key pairs, allowing verification of media content integrity and detection of specific modifications, utilizing identity authorities and blockchain technology for secure authentication and authorized modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If segment-level signature verification is implemented, then media content integrity detection capability is improved, but system complexity increases
Solution Approach 1:
The patent divides media content into discrete segments and applies individual signatures to each segment. This segmentation approach enables precise detection of alterations at the segment level rather than requiring verification of entire media files, thereby improving measurement precision while managing system complexity through modular processing
Solution Approach 2:
The patent embeds signatures and authentication data into media segments during the encoding or distribution phase, before the media reaches end users. This preliminary action allows verification systems to simply check pre-existing signatures rather than performing complex analysis during playback, reducing real-time system complexity
2Reliability
If comprehensive authentication verification is performed, then media authenticity reliability is improved, but user verification time increases
Solution Approach 1:
By dividing authentication into independent segment-level verifications rather than requiring verification of entire media files, the system can quickly authenticate individual segments. This segmentation allows users to verify authenticity of specific portions of media without waiting for comprehensive verification of all content, reducing perceived verification time while maintaining reliability
Solution Approach 2:
The patent enables verification systems to perform partial authentication by checking only the necessary segments rather than requiring complete verification of all media content. This partial action approach provides sufficient reliability for many use cases while significantly reducing verification time by avoiding unnecessary checks of already-verified or irrelevant segments
Data Source
AI summary
A content owner registers with an identity authority by providing information about the content owner and a public key of a public/private key pair. The content owner registers content to the identity authority and signs the multiple segments of the content with the private key of the public/private key pair. A system that receives the signed content determines an indicated content owner of the received media content and communicates with the identity authority to confirm that the media content was produced by the indicated content owner. The receiving system requests the public key of the content owner from the identity authority and uses the public key to verify the signature of each media content segment. Accordingly, the receiving system is able to determine if the media content was manipulated after being distributed by the content owner.