Chip Identification via Processing Duration Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for identifying legal chips are inadequate in preventing unauthorized copying and forgery, as they do not effectively distinguish between genuine and forged devices, leading to potential security breaches in identity and property authentication systems.
Innovation Solution
A method and system that involve a reading device sending a series of instructions to a chip to be read, measuring the processing durations and characteristics of the responses, and comparing them to those of a legal chip to determine authenticity, using techniques such as calibrating, storing, or categorizing the response data to ensure accurate identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing identification methods are used, then the identification process is simple, but the ability to distinguish between genuine and forged chips is insufficient
Solution Approach 1:
The identification method is segmented into multiple independent measurement dimensions: processing duration of instructions, response level characteristics, and parameter combinations. Each dimension provides independent verification data, allowing the system to achieve high identification accuracy through multi-factor analysis rather than relying on a single complex measurement mechanism.
2Reliability
If multiple measurement parameters are used to improve identification accuracy, then the reliability of chip authentication is enhanced, but the measurement and detection difficulty increases
Solution Approach 1:
The chip itself generates the measurement data through its normal operation - processing duration is automatically recorded when the chip executes instructions, and response level characteristics are naturally produced during communication. The identification system simply needs to observe and record these self-generated parameters without requiring additional active measurement actions from the chip, thereby reducing measurement difficulty while maintaining high reliability.
Data Source
AI summary
Provided are method and system for identifying a legal chip. The method includes a reading device sequentially sending, to a chip to be read, M instructions to be processed comprising N preset instructions (S101); the chip to be read sequentially receiving the M instructions to be processed, and responding to each instruction to be processed (S102); the reading device acquiring a set of first processing durations (S103) the reading device acquiring a processing duration characteristic of the chip to be read (S104); and the reading device acquiring a result of comparing the processing duration characteristic of the chip to be read with a processing duration characteristic of a legal chip corresponding to an identifier of the chip to be read, and determining the chip to be read as a legal chip (S105).