Video Stream Trustworthiness Checks Using Hashes and Signatures
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Solution Overview
Problem
Existing video data stream trustworthiness checks lack adaptability to various application scenarios and are inefficient in terms of bitrate and compatibility with video data stream structures.
Innovation Solution
Incorporating a unique identifier and digital signature into the video data stream to verify its trustworthiness, using hash functions and asymmetric encryption to ensure authenticity, while allowing for adaptable and efficient trustworthiness checks across different scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If digital signatures are included in video data streams for trustworthiness verification, then reliability of content authentication is improved, but bitrate overhead increases
Solution Approach 1:
The patent segments the trustworthiness verification data into multiple components: a first indication information containing hash values of video data, and a second indication information containing digital signatures. This segmentation allows the system to transmit verification data in a structured manner that optimizes bitrate usage while maintaining comprehensive authentication capability.
Solution Approach 2:
The patent extracts only the essential verification elements (hash values and digital signatures) from the complete authentication process and embeds them as indication information in the video data stream. This extraction approach minimizes the amount of data that needs to be transmitted while preserving the core trustworthiness verification functionality.
2Reliability
If comprehensive trustworthiness check mechanisms are implemented, then reliability of video authentication is improved, but device complexity increases
Solution Approach 1:
The patent performs preliminary hashing of video data to generate hash values before transmission. These hash values are embedded in the first indication information, allowing the receiving device to perform straightforward comparison operations rather than complex cryptographic verification of the entire video stream, thus reducing device complexity.
Solution Approach 2:
The patent introduces hash values as an intermediary element between the original video data and the digital signature verification process. This intermediary layer simplifies the verification mechanism by providing a compact representation that can be quickly compared against received data, reducing the computational complexity of the overall authentication system.
3Adaptability or versatility
If trustworthiness verification is adapted to different application scenarios, then versatility is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal trustworthiness verification framework where the same basic mechanism (hash comparison and digital signature verification) can be applied across different application scenarios including video streaming, video conferencing, and video storage. The indication information structure is designed to be scenario-agnostic, allowing a single implementation to serve multiple purposes without increasing device complexity.
Data Source
AI summary
Aspects of a trustworthiness check of a video data stream are described. According to a first aspect, a unique identifier which identifies a media asset to which a portion of a video data stream to be checked on trustworthiness belongs, is included into the trustworthiness check. According to a second aspect, a certificate of a content provider for performing the trustworthiness check is retrieved from a track of editors stored at an external resource. A third aspect provides a method for identifying a portion of a video data stream to be checked on trustworthiness using a digital signature. According to a fourth aspect, a digital signature for checking a portion of a video data stream is retrieved from an external resource.