Dual Serial Number Consumable Chip Authentication
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Solution Overview
Problem
After imaging device upgrades, existing consumable chips struggle to obtain enough new serial numbers for mass production due to increased verification difficulties, leading to delayed market entry and reduced market share.
Innovation Solution
The consumables chip employs a dual serial number system, using a first serial number for non-AC authentication before the upgrade and a second serial number for AC authentication after the upgrade, allowing previously cracked first serial numbers to combine with newly cracked second serial numbers for successful authentication with upgraded imaging devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If imaging device upgrades with new encryption algorithms and verification steps, then device security and verification difficulty increase, but consumable chip authentication fails and mass production cannot be achieved
Solution Approach 1:
The patent applies dynamics by making the serial number selection dynamic based on device version. The consumable chip automatically detects whether the imaging device is upgraded and switches between first serial numbers (for non-upgraded devices) and second serial numbers (for upgraded devices), allowing the system to adapt its authentication approach in real-time rather than being static
Solution Approach 2:
The patent changes the parameter of serial number type based on device upgrade status. By storing multiple types of serial numbers (first and second) and switching between them according to the imaging device's verification algorithm version, the system maintains compatibility across different device states without requiring complete re-cracking
2Reliability
If imaging device upgrades verification algorithm, then authentication security improves, but time and effort to crack serial numbers increases
Solution Approach 1:
The patent applies preliminary action by pre-storing multiple types of serial numbers (first and second) in the consumable chip before authentication occurs. When the imaging device is upgraded, the chip already has the necessary second serial numbers ready, eliminating the need to wait for cracking during production preparation
Solution Approach 2:
The patent segments the serial number system into two distinct types: first serial numbers for non-upgraded devices and second serial numbers for upgraded devices. This segmentation allows independent management and selection of appropriate serial number types, so cracking efforts for one type don't affect the other
3Device complexity
If consumable chip uses single serial number system, then chip structure remains simple, but compatibility with upgraded devices fails
Solution Approach 1:
The patent applies universality by making the consumable chip capable of working with both upgraded and non-upgraded imaging devices through a multi-function serial number system. The chip detects the device type and automatically selects the appropriate serial number type, providing universal compatibility across different device versions
Data Source
AI summary
The present disclosure relates to the technical field of printer consumables, and in particular, to a communication method for a consumable chip, a consumable chip, and a consumable. The communication method for a consumable chip includes: in the process of consumable serial number authentication, performing non-AC authentication with an imaging device based on a first serial number, and performing AC authentication with the imaging device based on a second serial number. The non-AC authentication is performed on the chip by using the first serial number before the device is upgraded, such that the imaging device records the first serial number as a used chip serial number. The second serial number, which is set after the device is upgraded, is only used for AC authentication.