Digital Media Authentication via Cryptoprocessor Signing and Distributed Ledger
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Solution Overview
Problem
Conventional methods for authenticating digital media content are inadequate in ensuring the integrity and authenticity of multimedia content, particularly in addressing the rise of 'fake news' and media hoaxes, where legitimate content is often mislabeled as doctored.
Innovation Solution
A system that utilizes cryptoprocessors embedded in capturing devices to digitally sign digital media content, combined with an encrypted distributed ledger for encoding identifiers and digital signatures, ensuring the content's origin, time of recording, and authenticity, allowing for subsequent verification without exposing the content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If digital media content is publicly published without authentication, then accessibility and dissemination are improved, but authenticity and integrity cannot be verified
Solution Approach 1:
The system performs preliminary authentication by embedding a cryptoprocessor in the capturing device that digitally signs the media content at the moment of capture. This preliminary action creates an immutable authenticity record before the content is published or distributed, allowing verification without compromising accessibility.
Solution Approach 2:
The patent introduces an intermediary authentication layer consisting of the cryptoprocessor and its digital signature system. This intermediary sits between the capturing device and the published content, providing verifiable authenticity without interfering with the content's accessibility or distribution.
2Reliability
If digital media content is extensively vetted before publication, then authenticity is improved, but time consumption and processing complexity increase
Solution Approach 1:
The cryptoprocessor performs the authentication action at the moment of content capture, which is the preliminary action before any vetting or publication process. This eliminates the need for time-consuming post-capture vetting because the authenticity is already established through digital signing.
Solution Approach 2:
The capturing device itself performs the authentication through its embedded cryptoprocessor, eliminating the need for external vetting organizations or manual review processes. The device self-authenticates the content it captures, significantly reducing time loss.
3Adaptability or versatility
If digital media content is manipulated for editing or processing, then usability and adaptability are improved, but integrity and originality are compromised
Solution Approach 1:
The patent separates the authentication metadata (digital signature, timestamp, device identifier) from the actual media content. This segmentation allows the content to be freely manipulated while the separate authentication layer remains intact and verifiable, preserving integrity information even as the content evolves.
Solution Approach 2:
The system creates a cryptographic copy or hash of the original content that is stored immutably. This copying mechanism allows the original content to be manipulated while the cryptographic copy serves as an immutable reference for verifying authenticity and detecting alterations.
4Measurement precision
If verification systems expose digital media content for analysis, then verification capability is improved, but security and privacy are worsened
Solution Approach 1:
The patent extracts only the essential verification elements (digital signature, timestamp, device identifier) from the complete media content for storage and verification purposes. This extraction allows verification to be performed on the extracted metadata without exposing the full content, maintaining security while enabling verification.
Solution Approach 2:
The digital signature acts as an intermediary that enables verification without direct exposure of the content. Verification systems can validate the signature and associated metadata to confirm authenticity without needing to access or expose the actual media content.
Data Source
AI summary
The disclosed computer-implemented method for authenticating digital media content may include (i) receiving digital media content that has been captured by a capturing device and digitally signed through a cryptoprocessor embedded within the capturing device to provide an assurance of authenticity regarding how the capturing device captured the digital media content, and (ii) encoding an identifier of the received digital media content and a digital signature to an encrypted distributed ledger, the digital signature including at least one of a digital signature of the digital media content by the capturing device or a digital signature of the digital media content by an entity encoding the received digital media content such that the encoding becomes available for subsequent verification through the encrypted distributed ledger. Various other methods, systems, and computer-readable media are also disclosed.