Hardware Encryption Module for Secure Device Pairing

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Solution Overview

Problem

Current communication security methods rely on software-based encryption, which is vulnerable to bugs, security holes, and reverse engineering, failing to protect against unauthorized access and data retrieval.

Innovation Solution

The system permanently burns encryption keys into dedicated modules within devices, ensuring encrypted and secure communication by making devices useless unless paired with their original counterparts, thus preventing reverse engineering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If software-based encryption is used, then security is implemented and communications are protected, but the system becomes vulnerable to bugs, security holes, and reverse engineering

Engineering Contradiction:

ImprovesecurityVSAvoidvulnerability to reverse engineering

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces software-based encryption with hardware-based encryption. The encryption key is physically embedded in the encryption module during manufacturing, moving the security mechanism from the software domain to the hardware domain. This substitution makes reverse engineering significantly more difficult as it would require physical access and sophisticated hardware analysis rather than software debugging.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The encryption key is pre-loaded into the encryption module during the manufacturing process before the device reaches the user. This preliminary action ensures that the security key is established before any potential security threats can occur, and the key never exists in a transmittable or modifiable state during device operation.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If encryption keys are stored in software, then encryption functionality is achieved, but the keys can be extracted and security protocols reverse engineered

Engineering Contradiction:

Improveencryption functionalityVSAvoidexposure of security keys

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent replaces software-based key storage with hardware-based key storage. The encryption key is physically embedded in the encryption module during manufacturing, moving the security mechanism from the software domain to the hardware domain. This substitution makes reverse engineering significantly more difficult as it would require physical access and sophisticated hardware analysis rather than software debugging.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts the encryption key from the general software environment and isolates it within a dedicated hardware module. The key is separated from the operational software and stored in a secure, dedicated storage location within the encryption module, preventing extraction through normal software interfaces or debugging tools.

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of operation

If devices are paired using software protocols, then pairing functionality is achieved, but the pairing can be compromised through software vulnerabilities

Engineering Contradiction:

Improvepairing functionalityVSAvoidpairing security

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces software-based pairing protocols with hardware-based pairing. The encryption keys are physically embedded in the encryption modules during manufacturing, and pairing is achieved through direct hardware interaction between devices. This substitution maintains ease of operation while significantly improving pairing security as it eliminates software vulnerabilities from the pairing process.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12289300B2Secure pairing of devices

Publication Date: 2025.04.29 INTERNATIONAL BUSINESS MACHINE CORPORATION

AI summary

A system and method for pairing two devices for secure communications. A user selects a first device to pair with a second device. The first and second devices have the ability to securely communicate with each other through the use of encrypted communications. An encryption key is written to the first device and then burned into the encryption module on the first device. A third device is selected to pair with the first device. A second encryption key is written to the first device and then burned into the encryption module.