Profile Key Hierarchy for Vehicle Data Encryption

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Solution Overview

Problem

Current transportation systems lack secure and efficient methods for user authentication and data access control, particularly in vehicle-to-service interactions, which can lead to unauthorized access and data privacy issues.

Innovation Solution

A method and system that associate a user's device with a profile key, encrypt data stored on a vehicle using this key, and restrict access based on the profile key, enabling secure authentication and permission-based access control for vehicle functions and services.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional authentication methods are used in vehicle systems, then ease of operation is maintained, but security and data privacy are compromised

Engineering Contradiction:
ImprovesecurityVSAvoidauthentication system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces a profile key as an intermediary element that mediates between the user device and the vehicle system. The profile key serves as a secure token that enables authentication without requiring complex credential verification processes. The vehicle system stores encrypted data that can only be accessed by authorized profile keys, creating a secure intermediary layer that protects data while maintaining operational simplicity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent creates a digital copy of user credentials in the form of a profile key that can be securely stored and transmitted. Instead of storing sensitive authentication data directly in the vehicle system, the patent uses encrypted copies (profile keys) that replicate the necessary authentication functionality while maintaining security. This allows multiple devices to hold valid copies of the same profile key for authentication purposes.

Inventive Principle:
Principle #26Copying

2Ease of operation

If data is stored on the vehicle for user access, then convenience is improved, but unauthorized access and data privacy risks increase

Engineering Contradiction:
Improvedata access convenienceVSAvoidunauthorized access risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent segments data storage by creating separate encrypted data containers for different users or access levels. Each profile key has its own designated data space that is encrypted and isolated from other users' data. This segmentation allows multiple users to access the vehicle system concurrently with their own data, improving convenience while preventing unauthorized access to other users' information through cryptographic isolation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies different security qualities to different data segments based on their sensitivity and access requirements. Each data container is encrypted with specific keys corresponding to authorized users, creating local security zones within the vehicle's storage system. This allows the system to provide easy access to authorized users while maintaining strong security protections, as each data segment has its own security characteristics tailored to its specific access requirements.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20240232386A9Digital key profile hierarchy
Publication Date: 2024.07.11 TOYOTA MOTOR NORTH AMERICA INC
  • US20240232386A9 patent drawing
  • US20240232386A9 patent drawing
  • US20240232386A9 patent drawing

AI summary

An example operation includes associating a device of a first user with a first profile key; encrypting data to be stored on a vehicle associated with the first user, by the device, with the first profile key; storing the encrypted data on the vehicle; and restricting access to other data stored on the vehicle, based on the first profile key.