Voiceprint Authentication Using Dynamic Text Verification
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Solution Overview
Problem
Current voiceprint authentication technologies either require users to speak for an extended period without restricting content, leading to flexibility but vulnerability to fraud, or demand consistent content, making them inflexible and susceptible to sound recording fraud.
Innovation Solution
A voiceprint authentication method that uses a limited text-based approach, where a combination of preregistered phrases is displayed to the user, allowing for variable content and reducing the authentication time, while employing a registration model to prevent sound recording fraud by comparing the spoken text with a pre-established model.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If voiceprint authentication technology unrelated to text is used, then application flexibility is improved, but authentication time increases and vulnerability to fraud increases
Solution Approach 1:
The patent segments the authentication process into two distinct stages: registration phase where comprehensive voiceprint data is collected and stored, and authentication phase where only verification against stored features is needed. This segmentation allows flexible application during authentication while keeping authentication time short, resolving the contradiction between flexibility and time consumption.
2Adaptability or versatility
If voiceprint authentication technology unrelated to text is used, then application flexibility is improved, but security against fraud deteriorates
Solution Approach 1:
The patent introduces text content verification as an intermediary layer between the user and the voiceprint authentication system. During authentication, the system verifies both the voiceprint features and the textual content of the spoken phrase. This intermediary text verification mechanism prevents fraud while maintaining application flexibility, as the text can be dynamically generated or selected.
3Loss of time
If voiceprint authentication technology related to text is used, then authentication time is reduced, but application flexibility deteriorates and security against fraud deteriorates
Solution Approach 1:
The patent implements dynamic text content during authentication by allowing the system to present different phrases or sentences to the user during each authentication attempt, rather than requiring consistent text. This dynamic approach maintains application flexibility while keeping authentication time short, as the system adapts the text content based on security requirements and user interaction.
4Loss of time
If voiceprint authentication technology related to text is used, then authentication time is reduced, but security against sound recording fraud deteriorates
Solution Approach 1:
The patent performs preliminary actions during the registration phase by collecting and storing comprehensive voiceprint features, including characteristics that are difficult to replicate in recordings. During authentication, the system compares the live voiceprint against these pre-established features. This preliminary collection of robust biometric data during registration enables quick authentication while maintaining security against sound recording fraud, as the stored features capture unique physiological characteristics.
Data Source
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AI summary
The present disclosure provides a voiceprint authentication method and a voiceprint authentication apparatus. The method includes: displaying (S11) a tip text to a user, the tip text being a combination of a preregistered phrase; obtaining (S12) a speech of the tip text read by the user; obtaining (S13) a pre-established registration model and determining a result of a voiceprint authentication according to the speech of the tip text and the pre-established registration model, if the speech of the tip text corresponds to the tip text.