Voiceprint authentication method and system for privacy protection and mobile terminal

Abstract

The invention belongs to the technical field of information security, and discloses a voiceprint authentication method and system for privacy protection and mobile terminal. During registration, the client collects user voice information and identity information, extracts a voiceprint feature vector, combines the encrypted feature vector and the identity information into a registered user template, and sends the registered user template to the server; The server stores the registered user template to complete registration; During login authentication, a client collects user voice information and identity information, and authentication i-is adopted; an authentication i- vector encryption algorithm is adopted to encrypt the feature vector, combines the encrypted feature vector and the identity information into an authentication user template, and sends the authentication user template to the server. And the server compares and calculates the authenticated user template and the registered user template to obtain an authentication result and returns the authentication result to the client. According to the invention, user data privacy protection in voiceprint authentication is realized under the condition that the voiceprint authentication efficiency is not influenced, and the method can be used for providing a privacy-efficient voiceprint login authentication system for a user inactual life.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a voiceprint authentication method and system for privacy protection, and a mobile terminal. Background technique [0002] At present, the commonly used existing technologies in the industry are as follows: At present, the commonly used existing technologies in the industry are as follows: With the increasing development of information technology and artificial intelligence, biometric-based identity authentication is the main development of identity authentication now and in the future direction. Due to its advantages of low cost, non-contact, remote and easy implementation, voiceprint authentication has an increasing status in identity authentication. However, there are many security threats to the voiceprint authentication system. In particular: once the attacker obtains the voiceprint template data of the users stored in the database by the service p...

AI Technical Summary

Problems solved by technology

However, due to the lack of consideration of the designer in this method, there is a problem that the voiceprint model is not encrypted, and the privacy of user data is not protected.

Once the voiceprint model is stolen, not only the user's privacy will be leaked, but the attacker can also pretend to be the user for authentication, which will cause great harm

[0003] To sum up, the problems existing in the existing technology are: the existing voiceprint authentication method cannot balance authentication accuracy with communication overhead and time overhead, and user data is not encrypted; in the application, user privacy will be leaked, and it is easy to be compromised. Forged voiceprint attacks and high error rate or high communication overhead

[0004] The difficulty and significance of solving the above technical problems: the traditional voiceprint authentication technology does not have an encryption module. Once the system is attacked, it is easy to leak user privacy. At the same time, the attacker can also pretend to be the user for authentication, which greatly increases the system risk.

However, homomorphic encryption technology will bring large communication overhead and calculation time, and the technology used cannot meet the requirements of voiceprint authentication. High accuracy requires fast authentication.

Therefore, there is a need for a new encryption method with high efficiency and privacy protection for voiceprint authentication, which can realize the protection of user privacy data without affecting the efficiency and accuracy of voiceprint authentication, even if the data is stolen, it cannot be used

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