Multi-Fingerprint Decryption for Mobile Security
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Solution Overview
Problem
Current encryption methods for mobile terminals, such as graphic or text passwords, fail to authenticate users securely, especially in public places where passwords can be easily leaked, compromising security.
Innovation Solution
A fingerprint decryption method and device that uses multiple input fingerprints, which can be different or partially the same, to decrypt encrypted objects, ensuring secure authentication by comparing the input fingerprints with preset fingerprints in a specific sequence and within predetermined time thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple fingerprints are used for decryption, then security is improved, but device complexity increases
Solution Approach 1:
The encryption key is segmented into multiple fingerprint templates stored in the secure element. Each fingerprint represents a portion of the overall authentication credential, and all segments must be present and valid for successful decryption. This segmentation approach enhances security by distributing the authentication credential across multiple biometric samples while maintaining manageable system complexity.
2Reliability
If multiple fingerprints are required for authentication, then authentication security is improved, but ease of operation deteriorates
Solution Approach 1:
Multiple fingerprint templates are pre-configured and stored in the secure element during device setup or through authorized enrollment procedures. When authentication is needed, the system simply needs to detect any one of the pre-stored fingerprint templates to trigger decryption, eliminating the need for complex real-time multi-fingerprint coordination and simplifying the user operation while maintaining security.
Data Source
AI summary
The present disclosure is applicable to the technical field of fingerprint identification, and provides a fingerprint decryption method and device. The method includes the following steps: receiving N input fingerprints, N being an integer greater than or equal to 2; and decrypting a to-be-decrypted object according to the N input fingerprints, the to-be-decrypted object being encrypted by using N preset fingerprints. According to the present disclosure, the to-be-decrypted object is decrypted by using an input fingerprint combination of two or more fingerprints, which improves data security of the mobile terminal.