Biometric Electronic Approval for Secure Imprints on General Terminals
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Solution Overview
Problem
Existing electronic seal systems face challenges in handling imprint data for organizations or departments and have limited versatility due to dedicated terminals for electronic seal devices.
Innovation Solution
An electronic approval system comprising an electronic approval device with biometric authentication and a security chip, and an electronic approval server that uses biometric authentication and encryption to insert electronic imprint images into documents, allowing versatility and compatibility with general-purpose information processing devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic seal device uses dedicated terminal, then security is improved, but versatility deteriorates
Solution Approach 1:
The patent enables electronic seal devices to function on general-purpose terminals rather than dedicated terminals. The security chip can perform authentication and seal generation on standard smartphones and tablets, making the system universally applicable across multiple device types while maintaining security through cryptographic operations in the secure element.
Solution Approach 2:
The patent introduces a server as an intermediary that manages authentication requests and coordinates between the electronic seal device and various terminals. This mediator enables secure communication and authentication verification without requiring the terminal itself to be dedicated or specially configured, thus improving versatility while maintaining security.
2Reliability
If electronic seal device stores encryption keys, then security is improved, but device complexity increases
Solution Approach 1:
The patent extracts the cryptographic key storage and management functions into a separate security chip (secure element) that is distinct from the main electronic seal device. This extraction allows the main device to remain simple while the security functions are isolated in a dedicated cryptographic module, reducing overall system complexity while maintaining high security.
Solution Approach 2:
The system is segmented into multiple functional components: the electronic seal device for user interaction, the security chip for cryptographic operations, and the server for authentication management. This segmentation distributes complexity across separate modules, allowing each component to be optimized independently while maintaining overall system security.
3Device complexity
If electronic seal device handles only individual imprints, then simplicity is maintained, but adaptability deteriorates
Solution Approach 1:
The patent implements dynamic authentication where the server can flexibly determine which users require authentication based on the document type and organization. The system adapts between individual seal authentication and multi-user organizational authentication modes, allowing the same device to handle both simple individual cases and complex organizational scenarios without hardware changes.
Data Source
AI summary
According to an embodiment, an electronic approval system comprising at least one electronic approval device and an electronic approval server. The electronic approval device includes a biometric authentication unit and a security chip. The biometric authentication unit performs biometric authentication. The security chip generates reliability confirmation information using a private key stored in advance if a result of the biometric authentication is normal, and transmits the reliability confirmation information to the electronic approval server via the information processing device. The electronic approval server includes a processor. The processor stores an electronic approval record indicating that approval has been successfully performed in the electronic approval device based on a public key corresponding to the private key and the reliability confirmation information.