Virtual Document Verification Using Mobile Device Hash Pairing
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Solution Overview
Problem
Existing methods for verifying the authenticity of virtual documents are complex and costly due to the need for additional hardware and software security components, making it cumbersome to check the validity of multiple high-security documents, such as identity cards or passports, which often require physical presence and multiple physical documents.
Innovation Solution
A method and system for securely providing and verifying the validity of virtual documents using a mobile computer system, which communicates contactlessly with a first computer system via a network, utilizing a cryptographically secured database to pair the mobile device with the virtual document, ensuring secure access through password protection and unique identifiers, allowing multiple documents to be associated with a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional hardware and software security components are implemented to ensure sufficient security of virtual documents, then security is improved, but device complexity and cost increase
Solution Approach 1:
The patent uses cryptographic copies (hash values) of the virtual document instead of the original document for verification. The first computer system calculates a hash value of the virtual document and compares it with a stored hash value in a blockchain database, eliminating the need for complex hardware security modules while maintaining security integrity.
Solution Approach 2:
The patent replaces physical document verification (mechanical/system-based) with cryptographic verification. Instead of using UV test devices or physical security features, the system uses hash function calculations and blockchain-based cryptographic verification to authenticate virtual documents, significantly reducing hardware requirements.
2Adaptability or versatility
If multiple physical documents are carried to ensure high-security document availability, then document availability is improved, but ease of operation deteriorates due to cumbersome handling
Solution Approach 1:
The patent merges multiple physical documents into a single virtual document stored on a mobile computer system. The mobile device can store multiple virtual documents (passport, driver's license, etc.) in a single database, allowing users to access multiple identities and documents from one device without carrying multiple physical documents.
Solution Approach 2:
The mobile computer system serves as a universal document carrier that can store and present multiple types of documents (identity cards, passports, driver's licenses) in a single device. The system provides multi-functional access to various document types through a unified interface, eliminating the need to carry separate physical documents for each identity.
3Reliability
If cryptographic verification using hash values and blockchain is implemented, then verification security is improved, but computational complexity increases
Solution Approach 1:
The patent uses partial cryptographic verification by only calculating and comparing hash values rather than performing full cryptographic validation. The first computer system calculates a hash value of the virtual document and compares it with the stored hash value in the blockchain, performing only the necessary computational steps without excessive cryptographic operations.
Data Source
AI summary
A method for providing and checking the validity of a virtual document on a first computer system is disclosed. The virtual document is provided by means of a mobile second computer system for a first computer system. The method includes receiving a password-protected storage address of a first database at which the virtual document can be read, reading the virtual document, displaying the virtual document on a display of the first computer system, receiving a unique second identifier of the mobile second computer system, calculating a third identifier using the received second identifier and a hash value of the virtual document, identifying the database entry of the second database in which a first identifier of a first pairing consisting of the mobile second computer system and the first virtual document is stored, comparing the calculated third identifier with the first identifier stored in the identifier database entry.