Mesh Network Random Bit Distribution for Secure Key Exchange

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Solution Overview

Problem

Conventional cryptographic key distribution methods are vulnerable to interception and require secure channels, and the generation of cryptographic keys using deterministic processes can be predictable, while long-distance transmission poses challenges due to signal loss and the need for a direct line of sight.

Innovation Solution

A mesh network comprising geosynchronous Earth orbit (GEO) satellites, low Earth orbit (LEO) satellites, high-altitude units (HAUs), and terrestrial stations collaboratively generate random bitstreams using cryptographically strong generators, leveraging environmental conditions and quantum phenomena, and employ quantum key distribution techniques to securely transmit these bitstreams without requiring line-of-sight communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional key distribution methods are used, then key exchange can be performed, but the system is vulnerable to interception and requires secure channels

Engineering Contradiction:

Improvekey distribution securityVSAvoidsecure channel requirement

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces conventional mechanical/cryptographic key distribution systems with a quantum-based system using entangled photons. Quantum entanglement allows two parties to share correlated random bit streams without physical key exchange, eliminating the need for secure transmission channels while providing inherent security through quantum mechanics principles.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a quantum entanglement source as an intermediary that generates correlated random bit streams for communicating parties. This intermediary enables secure key distribution by providing quantum-correlated randomness that cannot be intercepted or predicted, replacing direct key exchange mechanisms.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If deterministic processes are used for random bit generation, then key generation can be performed, but the process is predictable and vulnerable to manipulation

Engineering Contradiction:

Improverandomness qualityVSAvoidprediction vulnerability

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces deterministic computer-based random number generators with quantum mechanical processes. Quantum phenomena such as photon polarization measurements produce fundamentally unpredictable random bit streams, eliminating predictability vulnerabilities inherent in software-based or hardware deterministic generators.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If direct line of sight communication is used between satellites, then transmission can occur, but signal loss and interference hinder effectiveness

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidsignal loss and interference

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent uses ground-based stations as intermediaries to receive quantum-entangled photon signals from satellites and relay them to end users. This intermediary approach allows quantum key distribution to occur without requiring direct line-of-sight between satellite and user, reducing signal loss and atmospheric interference by performing quantum measurements at ground level.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach enhances key distribution security by increasing entropy, making bitstring generation harder to intercept and ensuring secure communication channels, suitable for financial transactions and other sensitive communications.

Implementation Method 1

collaboratively generate random bitstreams using cryptographically strong generators, leveraging environmental conditions and quantum phenomena

Methodology Applied

Scientific EffectQuantum phenomena:

Data Source

PatentUS20260005846A1Mesh network communications

Publication Date: 2026.01.01 WELLS FARGO BANK NA

AI summary

A mesh communication network for providing random bits for key generation may comprise one or more network nodes. Random bitstreams may be generated by nodes in the network based upon environmental conditions, hardware in the node, quantum phenomena, and the like. In some examples, the system can generate a common set of random bits from a superset of bits and deliver the common set or the superset to communicating parties which can then be used by the communicating parties to generate a shared cryptographic key.