NFC Controller Secure Element Selection via Environment Characteristics
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Solution Overview
Problem
Current NFC technologies face security risks and practicality issues due to limited selection of secure elements when a device host is shut down, as the selection is based solely on NFC communication characteristics, leading to potential losses and reduced usability.
Innovation Solution
Implementing a method where an NFC controller on a mobile terminal receives configuration instructions including environment characteristics to select a secure element, allowing for secure element selection and communication with a POS machine regardless of the device host's status, using attributes like location, limit, and time attributes to enhance security and practicality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the SE is selected only by using NFC communication characteristics obtained by the NFC controller when the device host is shut down, then the selection process is simple and fast, but security risks increase and practicality is reduced
Solution Approach 1:
The device host performs preliminary actions by configuring environment characteristics (location, time, limit attributes) in the NFC controller before shutdown. This preliminary configuration enables the NFC controller to make secure SE selections independently after shutdown, resolving the contradiction by preparing security parameters in advance rather than relying solely on simple NFC characteristics during the transaction.
Solution Approach 2:
Environment characteristics serve as an intermediary between the device host's security policies and the NFC controller's SE selection process. These characteristics (location, time, limit attributes) mediate the selection by providing contextual information that enhances security while maintaining automated operation, thus bridging the gap between simple operation and reliable security.
2Device complexity
If the SE selection is based solely on NFC communication characteristics, then the system complexity is low, but adaptability to different transaction environments is reduced
Solution Approach 1:
The system dynamically adapts SE selection based on environment characteristics such as location, time, and limit attributes. Rather than using static NFC communication characteristics alone, the system adjusts selection criteria according to the transaction context, enabling adaptability while maintaining manageable complexity through structured configuration.
Solution Approach 2:
The invention changes the parameters used for SE selection from solely NFC communication characteristics to include environment characteristics (location attribute, time attribute, limit attribute). This parameter expansion enhances adaptability to different transaction environments while keeping the system complexity controlled through predefined configuration mechanisms.
3Reliability
If environment characteristics are configured in the NFC controller for SE selection, then security and practicality are improved, but device complexity increases
Solution Approach 1:
The configuration process is segmented into distinct environment characteristics (location attribute, time attribute, limit attribute), each handling a specific aspect of transaction context. This segmentation allows the system to improve security through comprehensive environmental validation while managing complexity by organizing configuration into modular, manageable segments rather than a monolithic complex system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach improves the security and practicality of NFC transactions by enabling secure element selection based on configured environment characteristics, reducing security risks and enhancing usability even when the device host is shut down.
Implementation Method 1
an NFC technology refers to a technology that implements short-range communication between electronic devices by using a magnetic field induction principle
Data Source
AI summary
A method, a mobile terminal, and a point of sale (POS) machine for implementing selection of a secure element in near field communication are provided. The method includes receiving, by a near field communication controller on a local end, a first configuration instruction sent by a device host on the local end, where the first configuration instruction includes an environment characteristic used for selecting the secure element; configuring, by the near field communication controller, the environment characteristic in the near field communication controller according to the first configuration instruction; receiving, by the near field communication controller, a second configuration instruction sent by the device host; and configuring, by the near field communication controller according to the second configuration instruction, the environment characteristic in an attribute response instruction for communicating and interacting with a peer end.