Secure QR Document Routing via Distributed Ledger Keys
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Solution Overview
Problem
Conventional file sharing arrangements face security issues and are limited by file size when transferring confidential data, making secure distribution of large files inefficient and prone to unauthorized access.
Innovation Solution
A system utilizing a secure QR code and blockchain technology for encrypting and distributing large files, where a file reference key is stored in a distributed ledger, and access is granted through a validated QR code scan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional file sharing arrangements are used to transfer confidential data, then ease of operation is improved, but security and vulnerability to data tampering worsen
Solution Approach 1:
The patent introduces a distributed ledger system as an intermediary between the file storage system and the recipient. The ledger stores file reference keys that verify file integrity and authenticity, acting as a trusted mediator that prevents data tampering while maintaining ease of file sharing through automated verification processes.
Solution Approach 2:
The system creates a cryptographic copy of the file reference key and stores it in the distributed ledger. This copy serves as an immutable verification record that proves the file's authenticity without requiring the original file to be physically present, enabling secure verification while maintaining operational simplicity.
2Productivity
If conventional file sharing is used for large files, then productivity is improved through direct transfer, but reliability worsens due to file size limitations and security vulnerabilities
Solution Approach 1:
The patent extracts the file reference key from the actual file content and stores it separately in the distributed ledger. This separation allows the file to be stored in a distributed hash table without size limitations while the reference key provides verification, enabling reliable handling of large files without compromising security or transfer efficiency.
Solution Approach 2:
The distributed ledger acts as an intermediary that verifies file integrity through stored reference keys, enabling secure transfer of large files without requiring the entire file to be transmitted or stored in a single location, thus maintaining productivity while improving reliability.
3Reliability
If encrypted files are stored in a distributed hash table with reference keys in a distributed ledger, then reliability is improved through enhanced security, but device complexity worsens
Solution Approach 1:
The distributed ledger serves multiple functions simultaneously: it stores file reference keys for verification, maintains an immutable audit trail, and provides cryptographic proof of file integrity. This multi-functionality reduces the need for separate security systems, improving reliability while managing complexity through consolidation.
Solution Approach 2:
The system implements automated verification processes where the distributed ledger automatically validates file integrity through stored reference keys without requiring manual security checks. This self-service approach enhances security and data integrity while reducing operational complexity through automation.
4Reliability
If a secure QR code system is implemented for file access, then reliability is improved through controlled access, but ease of operation worsens due to additional validation steps
Solution Approach 1:
The patent replaces traditional mechanical access control systems (physical keys, cards, or passwords) with an optical QR code system that can be scanned and validated automatically. This substitution maintains security through cryptographic verification while improving ease of operation by eliminating the need for users to manually enter complex credentials.
Data Source
AI summary
Arrangements for providing secure document distribution are provided. In some aspects, a request to distribute a file may be received. The request may include identification of the file being distributed, as well as identification of a recipient. The identified file may be encrypted and stored in a distributed hash table. In some examples, a file reference key associated with the encrypted file may be generated and stored in a distributed ledger. A secure QR code based on the file reference key may be generated and transmitted to a recipient computing device. In some arrangements, an indication of a scan of the secure QR code may be received. Responsive to receiving the indication of the scan, the file reference key may be retrieved and a decrypted file of the encrypted file may be generated and provided to the recipient for viewing and/or downloading.