Video Segment Integrity Signaling With Secure Hash Verification
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Solution Overview
Problem
Existing video coding standards lack mechanisms to verify if an image/video is from a certified source, has not been tampered with, or is losslessly encoded, and the current decoded picture hash SEI message is not secure enough.
Innovation Solution
Implement secure hash functions like SHA-2 and SHA-3, along with digital signatures, to signal the integrity of image/video/audio content, and use trusted timestamping to ensure authenticity and integrity verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If digital media is transmitted and stored over networks, then bandwidth demand and accessibility increase, but security and integrity verification capabilities deteriorate
Solution Approach 1:
The patent applies preliminary action by computing and embedding cryptographic hash values (integrity verification data) into the media file during the encoding process, before transmission or storage. This allows the integrity verification to be performed later without requiring complex real-time checks during transmission, thus maintaining security capabilities while enabling efficient network bandwidth utilization.
2Productivity
If media files are compressed and encoded, then transmission efficiency increases, but verification of lossless encoding and source certification becomes more difficult
Solution Approach 1:
The patent introduces cryptographic hash functions as an intermediary mechanism that simplifies the verification process. Instead of complex analysis of compressed media to verify integrity, the system uses hash values embedded in the file that can be independently computed and compared. This intermediary approach enables straightforward verification of lossless encoding and source certification while maintaining high transmission efficiency through standard compression techniques.
3Ease of operation
If traditional encoding methods are used, then compatibility and ease of operation are maintained, but security against tampering and authentication capabilities are insufficient
Solution Approach 1:
The patent implements self-service by having the encoding system automatically generate and embed cryptographic hash values and verification data during the standard encoding process. This integration means that security features are added without requiring separate manual steps or complex procedures from users. The system autonomously performs the security-enhancing operations while maintaining the simplicity and compatibility of traditional encoding workflows.
Data Source
AI summary
Methods, systems, and devices for media processing are described. One example method of processing digital media includes performing a conversion between a media segment and a bitstream of the media segment, the conversion conforming to a format rule and an encryption rule, and the format rule specifying that an indication of an integrity of a portion of the media segment is signaled in the bitstream. In an example, the media segment is a video segment, an audio segment, or an image.