Secure Element Digital Key Encryption for Remote Control
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Solution Overview
Problem
Existing methods for securely transmitting digital keys to electronic devices are vulnerable to hacking and latency issues, which can pose risks in applications requiring rapid and secure control commands, such as remote vehicle operations.
Innovation Solution
An electronic device method involving mutual authentication between the device and a target device to obtain and use encryption keys, encrypting remote control commands within a trusted execution environment, and transmitting them securely using BLE or UWB communication, thereby enhancing security and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If digital keys are integrated to electronic devices using wireless communication technology, then user convenience is improved, but security vulnerabilities to hacking increase
Solution Approach 1:
The system segments the digital key functionality into separate components: a digital key applet stored in a secure element and a framework component. This segmentation allows the sensitive cryptographic operations to be isolated in the secure element while maintaining user convenience through the framework interface, thereby improving security without sacrificing ease of operation.
Solution Approach 2:
The patent introduces an intermediary authentication process between the electronic device and target device. Mutual authentication using ephemeral keys and signatures acts as an intermediary layer that verifies both parties before allowing control commands to be executed, providing security verification without complicating the user experience.
2Device complexity
If traditional remote control methods are used, then implementation simplicity is maintained, but latency and hacking risks increase
Solution Approach 1:
The system performs preliminary mutual authentication and establishes encryption keys before transmitting control commands. By pre-establishing secure communication channels through mutual authentication, the system reduces latency during actual control operations while maintaining implementation simplicity through standardized authentication protocols.
3Adaptability or versatility
If digital keys are stored in electronic devices, then access control functionality is enabled, but exposure to malicious use increases
Solution Approach 1:
The patent applies local quality by storing the digital key applet in a secure element with restricted access permissions. The secure element provides localized security protection for the cryptographic credentials, enabling access control functionality while preventing malicious use through hardware-enforced access restrictions and secure cryptographic operations.
Data Source
AI summary
Provided is a method, performed by an electronic device, of safely and quickly transmitting a remote control command to a target device. The method includes: obtaining information related to encryption based on a mutual authentication process between the electronic device and the target device; providing, to a framework and from a digital key applet installed on a secure element of the electronic device, the information related to encryption; encrypting a remote control command by using the information related to encryption; and transmitting the encrypted remote control command to the target device.