Mobile System Key Authentication via Hash Value Generation

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Solution Overview

Problem

In local wireless communication environments with mobility, existing methods are inefficient for managing public keys and certifications, requiring a more efficient key management system that does not rely on external networks or trusted authorities.

Innovation Solution

A mobile system and service system that generate and authenticate public keys using a hash function, allowing key exchange without external networks, with features including a public key receiver, hash value generator, output unit, session key generator, and public key authenticator, enabling secure key management and session setup.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a centralized infrastructure is used to store public keys and certifications of all peripheral devices, then key management can be centralized and controlled, but it becomes inefficient in mobile environments with frequent mobility and short communication periods

Engineering Contradiction:

Improvekey management reliabilityVSAvoidkey exchange efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent segments the centralized key management system into distributed components where each mobile device independently generates and manages its own public keys and hash values, eliminating the need for a centralized infrastructure while maintaining security and improving efficiency in mobile environments

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Mobile devices perform self-service key management by autonomously generating public keys, computing hash values, and authenticating each other without requiring external trusted authorities or centralized infrastructure, thereby improving key exchange efficiency in mobile scenarios

Inventive Principle:

Principle #25Self-service

2Reliability

If public keys and certifications of all peripheral devices are stored in a centralized system, then authentication can be performed, but it requires external networks and trusted authorities which reduces mobility and portability

Engineering Contradiction:

Improveauthentication reliabilityVSAvoidmobility and portability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent extracts the dependency on external networks and trusted authorities from the authentication process by enabling devices to perform mutual authentication using locally generated public keys and hash values, thereby enhancing mobility and portability while maintaining authentication reliability

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Devices perform preliminary key generation and hash computation before communication occurs, allowing immediate authentication without requiring connection to external networks or trusted authorities, thus improving mobility and adaptability in wireless environments

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If a simple key exchange method is used, then mobility and portability are improved, but security and reliability of key management are compromised

Engineering Contradiction:

Improvemobility and portabilityVSAvoidkey management security

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent changes the parameters of key management by using cryptographic hash functions to generate compact hash values from public keys, enabling secure verification with minimal data exchange, thus maintaining both mobility and security simultaneously

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS8327148B2Mobile system, service system, and key authentication method to manage key in local wireless communication

Publication Date: 2012.12.04 SAMSUNG ELECTRONICS CO LTD

AI summary

A mobile system, a service system, and a key authentication method to manage a key in a local wireless communication are provided. The mobile system and the service system may generate a hash value with respect to a public key of the service system using an identical hash function, and output a result corresponding to the hash value.