Mobile Terminal Service Storage by Security Level
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Solution Overview
Problem
Mobile terminals without secure storage mechanisms like SE cannot securely manage service information, limiting their ability to implement contactless card services, especially those requiring key information, while services without keys can be insecurely managed.
Innovation Solution
An information processing system that determines the storage location for service information based on the security level and storage mechanism type within the mobile terminal, using secure elements (SE), trusted execution environments (TEE), and terminal applications to manage service information securely or less securely depending on the service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If service information is stored in a mobile terminal without a secure storage mechanism like SE, then the terminal can implement contactless card services with easier operation and lower cost, but the security level of service information management deteriorates
Solution Approach 1:
The patent segments service information storage into multiple locations based on security requirements: secure storage (SE/TEE) for high-security service information requiring authentication, and general storage for low-security service information. This segmentation allows terminals without SE to implement services while maintaining appropriate security levels for different data types.
2Reliability
If a secure storage mechanism like SE is used to store service information, then the security level is improved, but the device complexity and cost increase
Solution Approach 1:
The patent applies local quality by assigning different security levels to different storage locations based on the specific security requirements of service information. Not all service information requires the same level of security, so high-security storage (SE/TEE) is used only where necessary, while general storage is used for less sensitive data, optimizing both security and resource utilization.
3Device complexity
If service information is stored in general storage without secure mechanism, then device complexity is reduced and cost is lowered, but the ability to securely manage services requiring key information deteriorates
Solution Approach 1:
The patent creates a universal service information management system that can operate in multiple modes: terminals with SE can use secure storage for high-security services, while terminals without SE can use general storage for lower-security services. The system universally supports both scenarios through the same architecture, allowing flexible deployment across different terminal types.
Data Source
AI summary
Provided are an information processing device, an information processing method, and an information processing system that can recognize falling of a communication device. A storage location for storing service information that is information required when a mobile terminal receives a service to be provided via a network is determined based on a security level of the service information and a type of a storage mechanism for storing the service information, included in the mobile terminal.