Trusted Platform Module Emulating Chip Cards
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Solution Overview
Problem
Users are burdened with carrying multiple chip cards for different applications, as existing solutions do not efficiently integrate multiple functionalities into a single portable device.
Innovation Solution
An electronic device with a communication interface and a Tamper Proof Module (TPM) that secures a program, allowing it to emulate a chip card, thereby eliminating the need for separate chip cards by providing a hardware token function, including identification and payment functionalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple chip cards are used for different applications, then security and functionality are maintained, but user burden and complexity increase
Solution Approach 1:
The patent combines multiple chip card functionalities into a single electronic device by integrating a TPM (Trusted Platform Module) that can securely store multiple cryptographic key pairs and execute applications. The TPM acts as a hardware token that consolidates what would otherwise require separate physical chip cards, merging identification, authentication, and other secure functions into one device.
Solution Approach 2:
The TPM is designed as a universal security module that can perform multiple functions across different applications. It stores multiple asymmetric cryptographic key pairs and can execute different applications depending on which chip card interface is activated, making a single device capable of replacing multiple specialized chip cards.
2Reliability
If chip cards are produced and distributed for each application, then security is ensured, but production and distribution costs increase
Solution Approach 1:
Instead of producing and distributing multiple physical chip cards, the system uses a single TPM that can be programmed with different applications and cryptographic keys. The TPM serves as a reusable template that can be configured for different purposes without requiring physical duplication, thereby eliminating production and distribution costs while maintaining security through cryptographic protection.
3Device complexity
If a TPM is integrated into the electronic device, then multiple chip card functions are consolidated, but device security requirements increase
Solution Approach 1:
The security functionality is segmented into a separate TPM module that can be either integrated into the electronic device or used as a detachable hardware token. This segmentation allows the security-critical functions to be isolated in a dedicated module with its own security measures, while the main device benefits from consolidated functionality. The TPM can be permanently connected or detached, providing flexibility in security architecture.
Data Source
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AI summary
The electronic device has a communication-interface (108) and processor units (112) for executing a program (119), where the program includes executable program instructions (122) and a data file (124). A trusted platform module (116) is formed for protecting the program. The program is formed for processing a read command (134) and for outputting the data (128) of the data file by the communication-interface. The data is specified by the read command. The read command is received by the communication-interface. Independent claims are also included for the following: (1) a data processing system with a reading device; and (2) a method for reading the data of the electronic device.