Identity authentication method and device based on multi-mode PPG signal

Abstract

The invention discloses an identity authentication method and device for a multi-mode PPG signal. The method comprises the following steps: simultaneously acquiring a first PPG signal of a first acquisition device and a second PPG signal of a second acquisition device by using a synchronous control program; respectively carrying out feature extraction and calculation on the first PPG signal and the second PPG signal, and then obtaining a new difference feature combination according to the feature combination of the first PPG signal and the second PPG signal; and inputting the new difference feature combination into the trained identity authentication model for user identity authentication, and outputting an authentication result. By adopting the technical scheme of the invention, safer multi-modal user authentication can be realized by utilizing the new features, the cracking difficulty is increased, and the identity authentication security is further improved.

Description

technical field [0001] The present application relates to the field of information security, in particular to an identity authentication method and device based on a multimodal PPG signal. Background technique [0002] Information security is often an important consideration for individuals or companies. How to securely obtain correct information is also one of the major issues in today's society. Identity recognition has the function of correctly identifying users to protect information, and it has gradually entered people's field of vision in recent years. There are many examples of identity recognition in life, such as fingerprint recognition and facial recognition of our mobile phones, which are good applications for identity recognition. [0003] At present, there are many methods for identity authentication, such as recording the user's PPG signal, extracting signal feature analysis to achieve the purpose of user authentication, or recording the ppg signal of multipl...

AI Technical Summary

Problems solved by technology

[0004] However, the current identity authentication methods only use one type of feature. Even if multiple types of features are used to realize identity authentication, the time characteristics of different features are not used, that is, different types of cognition do not require synchronous signal acquisition, so it does not reflect out the connection between different signals at the same time

If you want to crack the current identity authentication method, you only need to obtain different types of signals of the user without collecting them at the same time, and you can use these signals to pass the authentication separately. The effect is the same as using only any type of signal, and the security is not improved.

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