Quantum Key Distribution Access Control Using Blockchain Authorization

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Solution Overview

Problem

Current network security protocols lack robustness and adaptability to protect sensitive information across diverse environments, especially when multiple entities access data, and are vulnerable to sophisticated cyber threats, necessitating improved data security and regulatory compliance.

Innovation Solution

A system leveraging quantum computing principles and decentralized consensus mechanisms, utilizing quantum key distribution and quantum-resistant cryptography to secure communication channels, implement data tracking, and ensure data integrity and confidentiality, even in the presence of adversaries.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional network protocols are used for data transmission, then network compatibility and ease of operation are maintained, but data security and protection against cyberattacks deteriorate

Engineering Contradiction:

Improvedata securityVSAvoidsecurity system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces a quantum key distribution system as an intermediary layer between traditional network protocols and data transmission. This intermediary provides quantum-secured key exchange without requiring fundamental changes to existing network infrastructure, thereby improving data security while managing complexity through modular integration

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system changes the cryptographic parameters from classical algorithms to quantum-based algorithms. By transitioning from traditional encryption methods to quantum key distribution and quantum-resistant cryptography, the system achieves enhanced security without requiring complete system replacement, thus balancing security improvement with complexity management

Inventive Principle:

Principle #35Parameter changes

2Reliability

If quantum key distribution is implemented to secure communication channels, then data transmission security is improved, but computational resources and system complexity increase

Engineering Contradiction:

Improvecommunication securityVSAvoidcomputational resource consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system performs quantum key distribution and encryption operations in advance before actual data transmission occurs. By pre-establishing secure quantum keys and preparing encrypted communication channels beforehand, the system reduces the computational burden during active data transmission, thereby improving security while optimizing resource consumption

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces classical computational encryption mechanisms with quantum mechanical principles. By using quantum key distribution and quantum-resistant cryptography, the system achieves enhanced security with different computational paradigms, potentially reducing the energy and computational resources required for security operations compared to traditional approaches

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If multiple entities access sensitive information through traditional protocols, then network accessibility and ease of operation are maintained, but data integrity and protection from unauthorized access deteriorate

Engineering Contradiction:

Improvemulti-entity access capabilityVSAvoiddata integrity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system segments the data access control into multiple layers: quantum key distribution for secure key exchange, quantum-resistant cryptography for data encryption, and decentralized consensus mechanisms for access authorization. This segmentation allows multiple entities to access data through standardized interfaces while maintaining strong integrity protection through distributed verification

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements feedback mechanisms through decentralized consensus protocols that continuously verify data integrity and access authorization. By incorporating feedback loops that monitor and validate data transmission and access requests, the system maintains data integrity while enabling multi-entity access, as unauthorized actions are detected and rejected through the feedback mechanism

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20260074896A1System and method for data security using quantum key distribution

Publication Date: 2026.03.12 BANK OF AMERICA CORP

AI summary

A system for implementing a quantum-based data validation in a network is disclosed. The system generates a quantum key for data packet transmissions. The system distributes the quantum key among a set of end-point devices, where the set of end-point devices are each authorized devices. The system encrypts the data packet with the quantum key. The system receives a request message to access the data packet, where the request message comprises an identifier associated with a requesting device. The system determines whether the request message is originated from an authorized entity by determining whether the identifier associated with the requesting device is recorded as an authorized entity in a blockchain database. If it is determined that the request message is originated from an authorized entity, the system grants access of the data packet to the requesting device. Otherwise, the system denies the request.