Accessory-Based Authentication for Portable Terminals
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Solution Overview
Problem
Portable terminals used for vehicle authentication face usability restrictions due to limited communication range and vulnerability to relay attacks in wireless communication schemes.
Innovation Solution
An electronic device with a first communication module for communicating with an external device, an accessory for communication using a second scheme, a second communication module for data transmission with the accessory, and a security module for authentication data, along with a processor controlling the modules to manage authentication operations, including position-based authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If short-range communication scheme (e.g., NEC) is used for authentication data transmission, then communication security is improved, but communication range is limited
Solution Approach 1:
The patent introduces an accessory as an intermediary device between the portable terminal and the external electronic device. The accessory receives authentication data from the terminal via short-range communication and forwards it to the external device via wireless communication, thus extending the effective communication range while maintaining security through the secure terminal-accessory channel.
2Length of moving object
If wireless communication scheme (e.g., Bluetooth or Wi-Fi) is used for authentication data transmission, then communication range is extended, but vulnerability to relay attacks increases
Solution Approach 1:
The accessory serves as a trusted intermediary that the portable terminal can securely authenticate. The terminal establishes a secure connection with the accessory using short-range communication, then the accessory handles the wireless communication with the external device. This architecture allows the use of longer-range wireless communication while preventing relay attacks, as the terminal only communicates securely with the authenticated accessory.
Solution Approach 2:
The authentication system is segmented into two distinct communication channels: a secure short-range channel between the terminal and accessory for authentication data transmission, and a longer-range wireless channel between the accessory and external device for control signals. This segmentation allows each channel to be optimized for its specific purpose while maintaining overall security.
Data Source
AI summary
An electronic device and an electronic device operating method according to various embodiments comprises: a processor operationally connected to the first communication module, the second communication module, and the security module, wherein the processor can be configured to control the second communication module such that the second communication module activates the accessory in response to the reception, through the first communication scheme, of a discovery signal broadcasted by the external electronic device, control the second communication module such that the second communication module transmits, to the accessory through the third communication scheme, the data to be used for authentication with the external electronic device, and control the accessory such that the accessory transmits, to the external electronic device through the second communication scheme, the data to be used for authentication with the external electronic device.