Secure Token Transaction Unit Computational Load Delegation
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Solution Overview
Problem
Existing electronic payment systems face inefficiencies and potential latency due to complex computational tasks, especially when using low-cost and low-power components, which can lead to an uneven balancing of computational load between system components.
Innovation Solution
A secure token transaction unit within an electronic payment system that includes a communication interface for secure data exchange with a terminal, a secure memory for data integrity, and control means to delegate demanding tasks such as the denomination algorithm to the terminal, thereby reducing the computational load on the secure token transaction unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex computational tasks are performed locally on the secure token transaction unit, then security is maintained, but processing speed and efficiency deteriorate
Solution Approach 1:
The patent divides the computational workload into two segments: security-critical operations (token generation, cryptographic verification) remain on the secure token transaction unit, while non-critical computational tasks (denomination algorithm, transaction optimization) are offloaded to the terminal device. This segmentation maintains security requirements while improving overall processing speed.
Solution Approach 2:
The terminal device acts as an intermediary between the user and the secure token transaction unit. It handles complex calculations and communicates only essential results to the secure unit, reducing the computational burden on the secure unit while maintaining system security through the intermediary layer.
2Measurement precision
If demanding computational tasks are performed on the secure token transaction unit, then calculation accuracy is maintained, but energy consumption increases
Solution Approach 1:
Computational tasks are segmented based on energy requirements: the secure token transaction unit performs only essential security operations with low energy consumption, while energy-intensive denomination algorithms are executed on the terminal device, significantly reducing overall energy usage while maintaining calculation accuracy through the terminal's more powerful processor.
3Ease of manufacture
If low-cost and low-power components are used in the secure token transaction unit, then cost and power consumption are reduced, but computational capability deteriorates
Solution Approach 1:
The terminal device serves as a computational intermediary that compensates for the limited processing power of low-cost secure token units. The terminal performs complex denomination algorithms and communicates results to the secure unit, allowing the use of inexpensive, low-power components in the secure unit while maintaining high computational capability through the intermediary terminal.
Data Source
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Figure 4b
AI summary
The invention relates to secure token transaction unit 200, such as a secure element or a chip card, within an electronic payment transaction system 100. The token transaction unit 200 is connected or connectable to a terminal 300 by means of which the token transaction unit 200 is in an operative state. The secure token transaction unit 200 comprises a secure communication interface 202 adapted to enable bi-directional data communication between the secure token transaction unit 200 and the terminal 300; a secure memory 204 for storing data; and a control means 206, such as a processor, a microprocessor or a microcontroller, adapted i) to generate a delegation message 208 that at least partially delegates the calculation of a denomination algorithm for selecting a combination of tokens to be used for payment transactions with another transaction unit, thereby reducing a computational load on the secure token transaction unit 200, and ii) to send the delegation message 208 to the terminal 300.