Integrated IoT Chip Merging Security and Authentication Modules

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Solution Overview

Problem

Existing IoT devices face challenges in achieving simultaneous security enhancement and subscriber authentication while maintaining cost-effectiveness and ease of manufacturing.

Innovation Solution

An electronic device with an integrated interface part that combines different protocols in a single chip, along with a security module using a physically unclonable function (PUF) chip for generating unique identification keys, allowing for independent operation of the identification and security modules.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate chips are used for identification module and security module, then security function and subscriber authentication can be performed independently, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improvesecurity functionVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the identification module and security module into a single integrated chip. The identification module includes a processor and memory for subscriber authentication, while the security module includes a PUF chip for generating unique identification keys. This merging eliminates the need for separate chips while maintaining independent operational capabilities of both modules, thereby reducing device complexity and manufacturing cost.

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If multiple interface protocols are implemented in separate chips, then each module can be optimized for its specific protocol, but manufacturing cost and device size increase

Engineering Contradiction:

Improveinterface compatibilityVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The integrated chip is designed with multi-functional interface capabilities. The identification module supports multiple communication protocols including ISO 7816 contact interfaces and contactless interfaces. The security module can communicate with the identification module through multiple interface types such as I2C, SPI, and other serial interfaces. This universal interface design allows a single chip to replace multiple protocol-specific chips, reducing manufacturing cost and device size while maintaining protocol adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If PUF chip is integrated with identification module, then unique identification keys can be generated on-device enhancing security, but manufacturing precision requirements increase

Engineering Contradiction:

Improvesecurity functionVSAvoidmanufacturing precision

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The PUF chip is integrated as a dedicated security module within the identification module, with localized functions for generating unique identification keys. The PUF circuit is designed as a separate functional block with specific manufacturing tolerances that are less stringent than full-chip requirements. This localized implementation allows the PUF function to be optimized independently, maintaining high security standards while accommodating standard manufacturing precision levels.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250156588A1Electronic device and operating method of the same

Publication Date: 2025.05.15 ICTK CO LTD

AI summary

Provided are an electronic device and an operating method of the same.