A Method for Constructing Image Password Based on Neuron Chaotic Response Coding

Abstract

The invention discloses a method for constructing image passwords based on neuron chaotic response encoding. Firstly, the invention converts the digital passwords into the position initial values ​​of the Lorenz system through logarithmic transformation, and obtains the chaotic time series; combined with the user number, the temporal chaos The sequence is linearly transformed to obtain a low-level time series to construct a chaotic square wave excitation signal; the excitation signal is used as the input current of the Hodgkin-Huxley neuron to encode the chaotic response of the neuron, and the moment when the neuron pulse is emitted is recorded; finally Obtain the time interval sequence of neuron pulse firing, convert the one-dimensional time interval sequence into a two-dimensional image code through grayscale mapping, and according to the row and column parameters of the image code. The invention makes full use of the chaotic initial value sensitivity of the Lorenz system and the chaotic parameter sensitivity of the pulse distribution of the neuron model, ensures the irreversibility of the image password, and effectively enhances the security of the identity authentication system.

Description

technical field [0001] The invention belongs to an identity authentication system, and relates to an image password construction method based on neuron chaotic response coding, which is applied to the identity authentication system in combination with digital passwords, and can solve the problem of poor security of traditional passwords and passwords. Background technique [0002] Identity authentication is used to identify user identities and is the main way for users to protect their privacy and property. Today, when the Internet enters the era of big data, the identity authentication mechanism has become an important part of network security technology. The password mechanism is the most basic and widely used identity authentication mechanism. The system establishes a username / password for each legal user. When a user logs in to the system, the user enters his username and password, and the system compares it with the stored username and password to determine whether the...

AI Technical Summary

Problems solved by technology

This identity authentication mechanism has the following problems: ①The user’s password is stored in the system in plain text, which is easy to leak; ②The user enters the password in plain text to the system, and the attacker can intercept the user’s password from the communication line. ;③ The user cannot verify the identity of the system, and may be deceived by a false system to obtain the correct password or other valuable information

Therefore, using this method for identity authentication is relatively simple and convenient, but the security is extremely poor.

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