IoT Device Authentication via Segmented Key Transmission

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Solution Overview

Problem

Existing authentication techniques for IoT devices require physical user intervention to establish secure communication, limiting security and convenience.

Innovation Solution

A method and apparatus that divide a public key into partial keys and transmit them through multiple communication channels with different physical characteristics, allowing for secure authentication and communication without the need for physical user action.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional authentication techniques (NFC, QR code) are used, then physical user action is required to establish secure communication, but this limits security and convenience

Engineering Contradiction:

ImprovesecurityVSAvoiduser physical action requirement

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The public key is divided into multiple partial keys that are transmitted through different communication channels. This segmentation prevents a single point of failure and eliminates the need for physical user action, as the authentication process can proceed automatically through multiple independent channels.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces communication channels as intermediaries to transmit authentication data. By using multiple communication channels (such as wireless and wired channels) as mediators, the system achieves automatic authentication without requiring direct physical user intervention.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a single communication channel is used for key transmission, then the process is simple, but security is weakened

Engineering Contradiction:

ImprovesecurityVSAvoidcommunication channels

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The authentication key is segmented into multiple partial keys transmitted through different communication channels. This increases security by distributing risk across multiple channels while managing complexity through systematic segmentation of the key material.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent combines multiple communication channels into a composite authentication system. By integrating different channel types (wireless, wired) with different security characteristics, the system achieves enhanced overall security while managing the complexity of multiple channels through a unified authentication framework.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS10462659B2Method and apparatus for proximal authentication of wireless electronic device

Publication Date: 2019.10.29 SAMSUNG ELECTRONICS CO LTD

AI summary

A method for communicating between devices is presented. The method includes dividing a first public key of a first device into at least two partial keys, transmitting the at least two partial keys through at least two communication channels having different physical characteristics, receiving a second public key of a second device through at least one of the at least two communication channels, authenticating the second device based on the received second public key, and performing secure communication with the second device using a public key generated based on the received second public key.