Telecommunications Module Personalization via Secure Data Link
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Solution Overview
Problem
The challenge lies in efficiently personalizing telecommunications modules embedded in terminal devices, particularly in scenarios where the manufacturer does not know the subsequent operator or location of the device, leading to logistical and administrative hurdles, especially in M2M applications.
Innovation Solution
A method involving a portable data carrier with secure data communication, using cryptographically secured transport keys to import personalization data into the telecommunications module after it is embedded, allowing for late personalization at the device's operating location, ensuring security and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If early personalization by module manufacturer is performed, then security is improved, but adaptability to different operating locations deteriorates
Solution Approach 1:
The personalization process is segmented into two phases: pre-personalization at module manufacturing (for security-critical data) and post-personalization at terminal manufacturing (for location-specific data). This segmentation allows each phase to optimize for its specific requirements, resolving the contradiction between security and adaptability.
Solution Approach 2:
The module is pre-personalized with security-critical initialization data at the module manufacturer's site before being embedded in the terminal. This preliminary action ensures security requirements are met early, while leaving room for later personalization with location-specific data.
2Adaptability or versatility
If late personalization at terminal device is performed, then adaptability to operating location is improved, but security deteriorates
Solution Approach 1:
A secure data connection is established between the terminal device and the module manufacturer's server as an intermediary channel. This secure intermediary channel enables late personalization with location-specific data while maintaining cryptographic security through encrypted communication protocols.
3Device complexity
If embedded telecommunications modules are used, then device complexity is reduced, but personalization logistics become more complex
Solution Approach 1:
The terminal device performs self-personalization by automatically establishing a secure data connection with the module manufacturer's server and receiving the necessary personalization data. This self-service approach eliminates the need for manual personalization processes, reducing logistical complexity despite the embedded architecture.
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
Enables secure and efficient personalization of embedded telecommunications modules, reducing logistical efforts and maintaining security by allowing personalization to occur at the device's location, enhancing flexibility and usability in M2M applications.
Implementation Method 1
the data communication connection is secured cryptographically by means of corresponding transport keys of the data carrier and the module, i.e. by suitable encryption and decryption of the transmitted data
Data Source
Figure 1~2
Figure 3
AI summary
In order to personalize a telecommunications module (1) embedded in a terminal (7), personalization data (13) stored on a portable data carrier (10) are imported into the telecommunications module (1) via a data telecommunications link (20) secured by means of corresponding transport keys (4, 14) of the data carrier (10) and of the telecommunications module (1).