Attack-Resilient Device Communications Through Cryptographic Relay Links

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Solution Overview

Problem

Existing technologies for attack-resilient communications between devices are limited to point-to-point connections and moderate topologies, failing to facilitate extendable communication among multiple devices and secure interactions beyond a central hub.

Innovation Solution

A system comprising a master network switch and encryption retransmission devices with master and slave systems, enabling secure, attack-resilient communication through a protocol-free encryption device (PFED) that uses galvanic isolation, anomaly detection, and multi-variant signal analysis to protect against tampering and attacks, allowing connections between multiple trusted elements via untrusted networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If point-to-point communication with cryptographic binding is used, then security and attack resilience are improved, but device connectivity and communication extendability are limited

Engineering Contradiction:

Improveattack resilienceVSAvoiddevice connectivity

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system segments the network into multiple independent point-to-point cryptographic tunnels, each secured individually while collectively enabling multi-device communication. Each device pair maintains its own cryptographic binding, allowing the system to scale from 2 to N devices without compromising individual tunnel security.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces intermediary devices (relay nodes) that facilitate communication between devices that cannot directly establish cryptographic bindings. These intermediaries forward encrypted messages while maintaining the security properties of point-to-point connections, enabling extended network topology beyond direct peer-to-peer links.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If moderate topology with central hub is used, then implementation simplicity is improved, but communication flexibility and device-to-device interaction are restricted

Engineering Contradiction:

Improveimplementation simplicityVSAvoidcommunication flexibility

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The system dynamically adapts its topology based on communication requirements. While a central hub provides simple implementation, the protocol allows devices to establish direct cryptographic tunnels when needed, enabling dynamic switching between hub-mediated and direct peer-to-peer communication modes to optimize for both simplicity and flexibility.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The communication protocol is designed to be universal, supporting multiple topology modes (star, mesh, hybrid) within the same system. Devices can function both as hub clients and as direct peers, allowing the network to accommodate various communication patterns without requiring different implementation approaches.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If multiple cryptographic bindings are established for extendable communication, then device connectivity is improved, but system complexity and management overhead increase

Engineering Contradiction:

Improveextendable communicationVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multiple cryptographic binding operations into a unified protocol framework. Rather than managing separate cryptographic systems for each device pair, the protocol combines key exchange, tunnel establishment, and message routing into an integrated process that reduces overall system complexity while maintaining extendable communication capabilities.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Devices automatically perform cryptographic binding and tunnel establishment without requiring manual configuration or complex centralized management. The protocol includes self-service mechanisms for key generation, exchange, and validation, reducing the operational burden on system administrators while enabling scalable multi-device communication.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12452301B2Methods, systems, apparatuses, and devices for facilitating attack-resilient communications between devices

Publication Date: 2025.10.21 FORWARD EDGE AI INC

AI summary

A system facilitating attack-resilient communications between devices. The system comprises a master system comprising a master network switch and master encryption retransmission devices. The master encryption retransmission devices comprises a master encryption unit and a master communication unit communicatively coupled with the master encryption unit. The master system is configurable for connecting with a slave system comprising a slave network switch and slave encryption retransmission devices connected with the slave network switch. Each of a managing master encryption retransmission device and a managing slave encryption retransmission device receives a managing packet. Each of the master network switch and the slave network switch identifies a first master encryption retransmission device and a first slave encryption retransmission device based on the managing packet and enables an attack-resilient communication between a first device connected with the first master encryption retransmission device and a second device connected with the first slave encryption retransmission device.