CN-121985333-A - Identity authentication method and system for Internet of vehicles terminal

CN121985333ACN 121985333 ACN121985333 ACN 121985333ACN-121985333-A

Abstract

The invention is suitable for the technical field of Internet of vehicles safety communication, and provides an identity authentication method and system of an Internet of vehicles terminal, wherein the method comprises the following steps of performing feature layer fusion on a biological feature vector and an environment feature vector, and generating a first encryption confusion signal according to the feature fusion vector and a random mask sequence; the method comprises the steps of inputting a first encryption confusion signal into a chaotic exciter based on biological thermal noise, generating a chaotic synchronous parameter set by using a real-time thermal noise signal as a dynamic disturbance parameter, synchronously reconstructing a second encryption confusion signal according to the chaotic synchronous parameter set, performing confusion resolving operation on the second encryption confusion signal to restore a feature fusion vector to be verified, and comparing the feature fusion vector to be verified with a registration feature vector to judge whether identity authentication of a terminal is passed or not. The invention ensures that the original biological and environmental characteristics are confused before transmission through the characteristic fusion and the random mask exclusive OR operation, thereby fundamentally avoiding the disclosure of biological privacy data.

Inventors

PAN WENJUN
YI ZHOU
SHEN AO
ZHOU JIANJI
ZUO JIAO
QIN LEI

Assignees

安徽协创物联网技术有限公司

Dates

Publication Date: 20260505
Application Date: 20260317

Claims (9)

1. The identity authentication method of the internet of vehicles terminal is characterized by comprising the following steps: acquiring original biological information and environment information of a terminal user in real time, and respectively extracting to obtain a biological feature vector and an environment feature vector; performing feature layer fusion on the biological feature vector and the environment feature vector to obtain a feature fusion vector, and generating a first encrypted confusion signal according to the feature fusion vector and a random mask sequence; Inputting the first encryption confusion signal into a chaotic exciter based on biological thermal noise, and generating a dynamically-changed chaotic synchronous parameter set as a part of an identity authentication request message by using a real-time thermal noise signal as a dynamic disturbance parameter; Based on a preset synchronization algorithm, synchronously reproducing a second encrypted confusion signal for authentication according to the chaotic synchronization parameter set; Based on pre-stored registration feature vectors corresponding to the terminals and random mask sequence copies, performing confusion-removing operation on the second encrypted confusion signals, and restoring feature fusion vectors to be verified; and comparing the feature fusion vector to be verified with the registration feature vector to judge whether the identity authentication of the terminal is passed or not.
2. The identity authentication method of the internet of vehicles terminal according to claim 1, wherein the original biological information comprises one or more of heartbeat signals, face information and fingerprint information, and the environmental information comprises at least one of current positioning coordinates of the vehicle, accelerometer readings, gyroscope readings and temperature in the vehicle.
3. The identity authentication method of an internet of vehicles terminal according to claim 1, wherein the first encrypted confusion signal is generated by bitwise exclusive-or operation of a random mask sequence and a feature fusion vector.
4. The identity authentication method of an internet of vehicles terminal according to claim 1, wherein the step of inputting the first encrypted confusion signal into a bio-thermal noise-based chaotic exciter, generating a dynamically-varying chaotic synchronization parameter set as a part of an identity authentication request message by using a real-time thermal noise signal as a dynamic disturbance parameter, specifically comprises: Inputting the first encrypted confusion signal into a chaotic exciter based on biological thermal noise based on a preset quantum chaotic mapping model to serve as an initial state of the quantum chaotic mapping model; acquiring a real-time thermal noise signal generated when a terminal chip works through a chaotic exciter; Superposing the real-time thermal noise signal serving as a dynamic disturbance parameter to a control parameter of a quantum chaotic mapping model; Based on the initial state, under the driving of dynamic disturbance parameters, the quantum chaotic mapping model is subjected to a plurality of rounds of iterative operation, and state quantities generated after a plurality of rounds of iteration are output as a chaotic synchronization parameter set.
5. The identity authentication method of an internet of vehicles terminal according to claim 1, wherein the step of synchronously reproducing the second encrypted confusion signal for authentication according to the chaotic synchronization parameter set based on a preset synchronization algorithm, specifically comprises: the method comprises the steps of receiving an identity authentication request message, wherein the identity authentication request message comprises a chaotic synchronization parameter set and a unique identifier of a terminal; determining the synchronous algorithm configuration corresponding to the terminal according to the unique identifier of the terminal; and according to the synchronization algorithm, synchronously reproducing the chaotic synchronization parameter set to obtain a second encryption confusion signal.
6. The identity authentication method of an internet of vehicles terminal according to claim 5, wherein the step of performing a confusion-removing operation on the second encrypted confusion signal based on a registration feature vector and a random mask sequence copy pre-stored in correspondence with the terminal, and recovering a feature fusion vector to be verified, specifically comprises: And then, carrying out exclusive OR operation on the second encrypted confusion signal and the random mask sequence copy to obtain the feature fusion vector to be verified.
7. An identity authentication system of an internet of vehicles terminal, for implementing the identity authentication method of an internet of vehicles terminal according to any one of claims 1 to 6, comprising: the feature extraction module is used for acquiring original biological information and environment information of the terminal user in real time and respectively extracting to obtain a biological feature vector and an environment feature vector; the feature fusion module is used for carrying out feature layer fusion on the biological feature vector and the environment feature vector to obtain a feature fusion vector, and generating a first encryption confusion signal according to the feature fusion vector and the random mask sequence; The chaotic disturbance module is used for inputting the first encryption confusion signal into a chaotic exciter based on biological thermal noise, and generating a chaotic synchronous parameter set which is dynamically changed by using a real-time thermal noise signal as a dynamic disturbance parameter as a part of an identity authentication request message; The chaotic synchronization module is used for synchronously reproducing a second encrypted confusion signal for authentication according to the chaotic synchronization parameter set based on a preset synchronization algorithm; The feature restoration module is used for performing confusion-removing operation on the second encrypted confusion signal based on a registration feature vector and a random mask sequence copy which are prestored and correspond to the terminal, and restoring a feature fusion vector to be verified; And the identity authentication module is used for comparing the feature fusion vector to be verified with the registration feature vector so as to judge whether the identity authentication of the terminal is passed or not.
8. The identity authentication system of the internet of vehicles terminal according to claim 7, wherein the chaotic disturbance module specifically comprises: The initial state determining unit is used for inputting the first encryption confusion signal into a chaotic exciter based on biological thermal noise based on a preset quantum chaotic mapping model to serve as an initial state of the quantum chaotic mapping model; the thermal noise acquisition unit is used for acquiring real-time thermal noise signals generated when the terminal chip works through the chaotic exciter; the dynamic disturbance unit is used for superposing the real-time thermal noise signal serving as a dynamic disturbance parameter to the control parameter of the quantum chaotic mapping model; The iterative operation unit is used for enabling the quantum chaotic mapping model to carry out a plurality of rounds of iterative operation under the driving of the dynamic disturbance parameters based on the initial state, and outputting state quantities generated after a plurality of rounds of iteration as a chaotic synchronization parameter set.
9. The identity authentication system of the internet of vehicles terminal according to claim 7, wherein the chaotic synchronization module specifically comprises: the system comprises a request receiving unit, a request processing unit and a terminal, wherein the request receiving unit is used for receiving an identity authentication request message, and the identity authentication request message comprises a chaotic synchronization parameter set and a unique identifier of the terminal; The synchronization algorithm determining unit is used for determining the corresponding synchronization algorithm configuration of the terminal according to the unique identifier of the terminal; and the synchronous reproduction unit is used for synchronously reproducing the chaotic synchronous parameter set according to the synchronous algorithm to obtain a second encrypted confusion signal.

Description

Identity authentication method and system for Internet of vehicles terminal Technical Field The invention belongs to the technical field of Internet of vehicles safety communication, and particularly relates to an identity authentication method and system of an Internet of vehicles terminal. Background With the rapid development of the internet of vehicles technology, the safety of communication between vehicles and infrastructure (V2I) and between vehicles (V2V) becomes a core problem for guaranteeing road traffic safety and user privacy. The traditional identity authentication method based on the digital certificate or the pre-shared key has the risks of high calculation cost, strong centralized dependence and easy key cracking when facing to the car networking environment with high-speed movement and rapid topology change. In the prior art, the scheme tries to identify by using the biological characteristics, but the security is lower because the biological characteristics have leakage risks in the acquisition and transmission processes. In addition, the conventional encryption authentication process often separates privacy protection from authentication, and it is difficult to realize high-strength privacy protection while ensuring low delay. Therefore, how to design an identity authentication method for the internet of vehicles, which can not only fundamentally prevent private data leakage, but also perform quick and accurate verification, is a technical problem to be solved in the field. Disclosure of Invention The invention aims to provide an identity authentication method of a vehicle networking terminal, and aims to solve the technical problems. The invention is realized in such a way that the identity authentication method of the vehicle networking terminal comprises the following steps: acquiring original biological information and environment information of a terminal user in real time, and respectively extracting to obtain a biological feature vector and an environment feature vector; performing feature layer fusion on the biological feature vector and the environment feature vector to obtain a feature fusion vector, and generating a first encrypted confusion signal according to the feature fusion vector and a random mask sequence; Inputting the first encryption confusion signal into a chaotic exciter based on biological thermal noise, and generating a dynamically-changed chaotic synchronous parameter set as a part of an identity authentication request message by using a real-time thermal noise signal as a dynamic disturbance parameter; Based on a preset synchronization algorithm, synchronously reproducing a second encrypted confusion signal for authentication according to the chaotic synchronization parameter set; Based on pre-stored registration feature vectors corresponding to the terminals and random mask sequence copies, performing confusion-removing operation on the second encrypted confusion signals, and restoring feature fusion vectors to be verified; and comparing the feature fusion vector to be verified with the registration feature vector to judge whether the identity authentication of the terminal is passed or not. Further, the original biological information comprises one or more of heartbeat signals, face information and fingerprint information, and the environment information comprises at least one of current positioning coordinates of the vehicle, accelerometer readings, gyroscope readings and temperature in the vehicle. Further, the first encrypted confusion signal is generated by performing a bitwise exclusive or operation on the random mask sequence and the feature fusion vector. Further, the step of inputting the first encrypted confusion signal into a chaotic exciter based on biological thermal noise, and generating a dynamically-changed chaotic synchronization parameter set as a part of an identity authentication request message by using a real-time thermal noise signal as a dynamic disturbance parameter, specifically includes: Inputting the first encrypted confusion signal into a chaotic exciter based on biological thermal noise based on a preset quantum chaotic mapping model to serve as an initial state of the quantum chaotic mapping model; acquiring a real-time thermal noise signal generated when a terminal chip works through a chaotic exciter; Superposing the real-time thermal noise signal serving as a dynamic disturbance parameter to a control parameter of a quantum chaotic mapping model; Based on the initial state, under the driving of dynamic disturbance parameters, the quantum chaotic mapping model is subjected to a plurality of rounds of iterative operation, and state quantities generated after a plurality of rounds of iteration are output as a chaotic synchronization parameter set. Further, based on a preset synchronization algorithm, according to the chaotic synchronization parameter set, the step of synchronously reproducing the second encrypted confusion signa