Group Authentication for Printer Cartridge Security
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Solution Overview
Problem
Current authentication systems in device networks, such as printer systems, are vulnerable to unauthorized device connections due to failures in security functions, leading to potential malfunctions and financial losses when hacking occurs.
Innovation Solution
Implementing a group authentication procedure where multiple previously authenticated devices form an authentication group to verify new connections, using challenge-response protocols and unique information generated during the group operation, ensuring secure connections even if the main device's security function fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a one-to-one authentication procedure is performed between the main printer and cartridge, then the authentication process is simple and quick, but the security is insufficient when the main printer's authentication module is compromised
Solution Approach 1:
The patent introduces an authentication group as an intermediary between the main printer and the cartridge. When the main printer's authentication module is compromised, the authentication group (comprising other authenticated cartridges) acts as a mediator to perform group-based authentication, thereby maintaining security without requiring complete redesign of the authentication architecture.
Solution Approach 2:
The system performs preliminary authentication by establishing an authentication group of trusted devices before relying solely on the main printer's authentication module. This preliminary action creates a backup authentication pathway that can be activated when the main authentication mechanism fails, preventing unauthorized cartridges from being used.
2Reliability
If group-based authentication is implemented to enhance security, then unauthorized devices are better prevented, but the authentication process becomes more complex and time-consuming
Solution Approach 1:
The system implements partial group authentication by selecting only the necessary number of authentication group members required to verify the cartridge's authenticity. This approach provides sufficient security through group-based verification while minimizing the time consumption by avoiding unnecessary involvement of all possible authentication group members.
3Reliability
If multiple authentication procedures are performed, then the security against unauthorized cartridges is improved, but the processing overhead and system resource consumption increase
Solution Approach 1:
The authentication group is established in advance during normal operation when the main printer's authentication module is functioning properly. This preliminary action pre-computes and stores authentication credentials in the authentication group members, so that when security verification is needed, the system can quickly utilize these pre-prepared credentials without performing computationally intensive authentication procedures in real-time.
Data Source
AI summary
A device system that performs group authentication and an operating method thereof are provided. The device system includes multiple devices. The operating method of the device system includes performing a first authentication procedure with respect to a first device that is newly connected to the device system; and performing a second authentication procedure with respect to the first device via an authentication group including at least two devices selected from the devices. The second authentication procedure is a group-based authentication procedure. If the first and second authentication procedures are successful, the operating method includes approving connection of the first device to the device system.