Visible Digital Document Seal for Mobile Authentication Freshness
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Solution Overview
Problem
Existing digital authentication methods for documents lack confidence and flexibility, failing to ensure authenticity and data freshness, particularly in environments where specialized equipment like flatbed scanners are unavailable.
Innovation Solution
A document digital sealing and authenticating (DSA) computing device that uses a processor to extract data from a document, apply a unique visible graphic seal, and authenticate the document using mobile devices, leveraging image processing and blockchain technology to ensure data integrity and freshness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional authentication methods (password, biometric, encryption) are used to protect documents, then document security is improved, but authenticity and data freshness cannot be ensured
Solution Approach 1:
A digital seal acts as an intermediary component between the document content and the authentication verification process. The seal contains encoded authentication data that mediates the trust relationship, allowing verification of both authenticity and freshness without requiring direct exposure of sensitive document contents or complex authentication protocols.
Solution Approach 2:
The digital seal is applied to the document before any potential tampering or verification occurs. By pre-encoding authentication data and freshness information into the seal at the time of document creation or last update, the system ensures that authenticity and freshness can be verified at any future point without requiring re-authentication or risking data manipulation.
2Measurement precision
If specialized equipment like flatbed scanners is required for document authentication, then authentication accuracy is improved, but device complexity and accessibility worsen
Solution Approach 1:
The system creates a digital copy of the physical document and applies a digital seal to this digital representation. This copying process eliminates the need for specialized scanning equipment while maintaining authentication accuracy, as the digital seal can be applied and verified on the digital copy without requiring physical document handling or specialized hardware.
Solution Approach 2:
The patent replaces mechanical scanning and physical document handling with digital image processing and computational verification. By substituting the mechanical flatbed scanner with mobile device cameras and digital image processing algorithms, the system achieves equivalent authentication functionality without specialized equipment requirements.
3Reliability
If digital seals with unique visible graphics are applied to documents, then authentication confidence is improved, but device complexity and processing requirements worsen
Solution Approach 1:
The digital seal utilizes visible graphic elements with distinct visual characteristics that can be easily detected and differentiated. By incorporating unique visible graphics with specific color patterns or visual markers, the system enables simple detection and verification processes that enhance authentication confidence without requiring complex processing algorithms.
Solution Approach 2:
The authentication process is segmented into distinct components: the visible graphic element for detection, the encoded authentication data for verification, and the freshness information for timeliness validation. This segmentation allows each component to be processed independently using simple, efficient algorithms, reducing overall processing requirements while maintaining high authentication confidence.
Data Source
AI summary
Systems and methods for sealing a document using a visible graphical digital seal are described, as well as systems and methods for authenticating a sealed document by identifying and decoding the digital seal.