WO2023138265A1

WO2023138265A1 - Data encryption and decryption method and system, device, and computer-readable storage medium

Info

Publication number: WO2023138265A1
Application number: PCT/CN2022/138774
Authority: WO
Inventors: 张旭; 吴睿振; 张永兴; 陈静静; 孙华锦; 王凛
Original assignee: 苏州浪潮智能科技有限公司
Priority date: 2022-01-21
Filing date: 2022-12-13
Publication date: 2023-07-27
Also published as: CN114117502B; CN114117502A

Abstract

The invention discloses a data encryption and decryption method and system, a device, and a computer-readable storage medium. An embodiment comprises obtaining target data to be encrypted; converting cryptographic key information of the target data into a system parameter of a Henon chaotic system; and performing an operation on the target data by means of an output operation formula of the Henon chaotic system and on the basis of the system parameter to obtain an encryption result of the target data. In the present application, a cryptographic key information feature is realized with the aid of a system parameter of a Henon chaotic system, and cryptographic key space can be expanded due to the fact that there are a greater number of system parameters of the Henon chaotic system; and an encryption result can be obtained just by performing an operation on target data by means of an output operation formula of the Henon chaotic system. Due to the fact that the output operation formula only involves a differential equation and a matrix operation, the present invention has a fast encryption speed and good applicability. The data encryption and decryption system, the device, and the computer-readable storage medium provided by the present application likewise solve corresponding technical problems.

Description

A data encryption and decryption method, system, device and computer-readable storage medium

Cross References to Related Applications

This application claims the priority of a Chinese patent application filed with the China Patent Office on January 21, 2022, with application number 202210069219.1, and the application name is "A Data Encryption and Decryption Method, System, Device, and Computer-Readable Storage Medium", the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the technical field of data security, and more specifically, to a data encryption and decryption method, system, device and non-volatile readable storage medium.

Background technique

In recent years, more and more images are transmitted and stored on the network. In various industries, such as computer vision, robot path planning, and medical image processing, the privacy of information has become a crucial issue. Among them, the encryption algorithm can only allow authorized users to obtain and process images. Therefore, in the field of information technology, the encryption algorithm is widely recognized by experts and scholars and has become an effective means of data security. However, the existing DES (Data Encryption Standard, Data Encryption Standard), AES (Advanced Encryption Standard, Advanced Encryption Standard), RSA and other encryption and decryption methods have many limitations, such as small key space, slow encryption speed, etc., and poor applicability.

Contents of the invention

The purpose of this application is to provide a data encryption and decryption method, which can solve the technical problem of how to improve the applicability of the data encryption and decryption method to a certain extent. The present application also provides a data encryption and decryption system, equipment and non-volatile readable storage medium.

In order to achieve the above object, the application provides the following technical solutions:

A data encryption and decryption method, comprising:

Obtain the target data to be encrypted;

Convert the key information of the target data into the system parameters of the Henon chaotic system;

Based on the system parameters, the target data is calculated through the output calculation formula of the Henon chaotic system, and the encryption result of the target data is obtained.

In some embodiments, based on the system parameters, the target data is calculated through the output calculation formula of the Henon chaotic system to obtain the encryption result of the target data, including:

Based on the system parameters, the target data is calculated through the output calculation formula of the Henon chaotic system, and the encryption result of the target data is obtained;

The output calculation formula of the Henon chaotic system includes:

y(k)=Cx(k)+Dm(k); z(k)=Ex(k);

ξ(k)=x ₁ (k);

x(k)=[x ₁ (k) x ₂ (k)] ^T ;

Among them, m(k) represents the target data at time k; y(k), z(k) represent the encryption results; C represents the output matrix of the Henon chaotic system,

D represents a non-singular through matrix;

b and d represent the preset parameter values, and x ₁ (k)∈[-d, d]; x ₁ (k) and x ₂ (k) represent the two state values of the Henon chaotic system; T represents the transpose of the matrix; E represents the invertible matrix.

In some embodiments, the key information of the target data is converted into system parameters of the Henon chaotic system, including:

Convert the key information of the target data into the state value of the Henon chaotic system.

Convert the key information of the target data into the corresponding values of A _i and/or output matrix in the Henon chaotic system.

Convert the key information of the target data into the b value in the Henon chaotic system.

A data encryption and decryption method, comprising:

Obtain the encryption result, wherein, the encryption result is based on the system parameters, obtained by calculating the target data through the output calculation formula of the Henon chaotic system, and the system parameters are the parameters of the Henon chaotic system obtained after converting the key information of the target data;

Get system parameters;

The encrypted result is decrypted based on the system parameters to obtain the target data.

In some embodiments, the encrypted result is decrypted based on system parameters to obtain target data, including:

Through the decryption formula, the encryption result is decrypted based on the system parameters to obtain the target data;

The decryption formula includes:

ξ(k)=x ₁ (k);

Among them, m(k) represents the target data at time k; D represents the non-singular through matrix; y(k), z(k) represents the encryption result; C represents the output matrix of the Henon chaotic system,

E represents an invertible matrix;

b, d represent preset parameter values, and x ₁ (k)∈[-d, d]; x ₁ (k) represents a state value of the Henon chaotic system;

Represents the pseudoinverse of a matrix.

This application also discloses a data encryption and decryption system, including:

The first obtaining module is used to obtain the target data to be encrypted;

The first conversion module is used to convert the key information of the target data into the system parameters of the Henon chaotic system;

The first encryption module is used to calculate the target data through the output calculation formula of the Henon chaotic system based on the system parameters, and obtain the encryption result of the target data.

This application also discloses a data encryption and decryption device, including:

memory for storing computer programs;

The processor is configured to implement the steps of any one of the above data encryption and decryption methods when executing the computer program.

A non-volatile readable storage medium, wherein a computer program is stored in the non-volatile readable storage medium, and when the computer program is executed by a processor, the steps of any one of the above data encryption and decryption methods are realized.

A data encryption and decryption method provided by the present application obtains target data to be encrypted; converts key information of the target data into system parameters of a Henon chaotic system; based on the system parameters, operates on the target data through an output operation formula of the Henon chaotic system to obtain an encryption result of the target data. In this application, the function of the key information is realized by means of the system parameters of the Henon chaotic system. Since the system parameters of the Henon chaotic system are many, this application can expand the key space; and only need to operate the target data through the output operation formula of the Henon chaotic system, and the encryption result can be obtained. Since the output operation formula only involves differential equations and matrix operations, the encryption speed is relatively fast and the applicability is good. A data encryption and decryption system, device, and non-volatile readable storage medium provided by this application also solve corresponding technical problems.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or prior art. Obviously, the accompanying drawings in the following description are only the embodiments of the application. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

FIG. 1 is a first flowchart of a data encryption and decryption method provided by an embodiment of the present application;

Fig. 2 is the structural diagram of Henon chaotic system among the present application;

FIG. 3 is a second flow chart of a data encryption and decryption method provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of a first structure of a data encryption and decryption system provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a second structure of a data encryption and decryption system provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a data encryption and decryption device provided in an embodiment of the present application;

FIG. 7 is another schematic structural diagram of a data encryption and decryption device provided in an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a non-volatile readable storage medium provided by an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Please refer to FIG. 1 . FIG. 1 is a first flowchart of a data encryption and decryption method provided by an embodiment of the present application.

A data encryption and decryption method provided in an embodiment of the present application may include the following steps:

Step S101: Obtain target data to be encrypted.

In practical applications, the target data to be encrypted can be obtained first, and the type of the target data can be determined according to actual needs, such as text data, image data, etc., which are not specifically limited in this application.

Step S102: converting the key information of the target data into system parameters of the Henon chaotic system.

In practical applications, after obtaining the target data to be encrypted, it is necessary to convert the key information of the target data into system parameters in the Henon (chaos map) chaotic system, for example, map the key information to the system parameters of the Henon chaotic system, etc., so as to realize the encryption and decryption function of the key information of the target data with the help of the system parameters of the Henon chaotic system.

It should be noted that the types and quantities of the system parameters of the Henon chaotic system converted from the key information in this application can be determined according to actual needs, and this application does not make specific limitations here.

Step S103: Based on the system parameters, the target data is calculated through the output calculation formula of the Henon chaotic system to obtain the encryption result of the target data.

In practical applications, after converting the key information of the target data into the system parameters of the Henon chaotic system, the target data can be calculated based on the system parameters through the output calculation formula of the Henon chaotic system to obtain the encryption result of the target data.

In a specific application scenario, in the process of calculating the target data through the output calculation formula of the Henon chaotic system based on the system parameters, and obtaining the encryption result of the target data, the output calculation formula of the Henon chaotic system may include:

y(k)=Cx(k)+Dm(k); z(k)=Ex(k);

ξ(k)=x ₁ (k);

x(k)=[x ₁ (k) x ₂ (k)] ^T ;

D represents a non-singular through matrix;

Correspondingly, the system parameters of the Henon chaotic system can be x ₁ (k), x ₂ (k), A _i , C, b, etc. Further, in the process of converting the key information of the target data into the system parameters of the Henon chaotic system, the key information of the target data can be converted into x ₁ (k), x ₂ (k) in the state value of the Henon chaotic system, and a ₁₁ , a ₁₂ _, a 21 , a ₂ in A _i 2, c ₁₁ , c ₁₂ , c ₂₁ , c ₂₂ in C, one or more of b, etc., which are not specifically limited in this application.

A data encryption and decryption method provided by the present application obtains target data to be encrypted; converts key information of the target data into system parameters of a Henon chaotic system; based on the system parameters, operates on the target data through an output operation formula of the Henon chaotic system to obtain an encryption result of the target data. In this application, the function of the key information is realized by means of the system parameters of the Henon chaotic system. Since the system parameters of the Henon chaotic system are many, this application can expand the key space; and only need to operate the target data through the output operation formula of the Henon chaotic system, and the encryption result can be obtained. Since the output operation formula only involves differential equations and matrix operations, the encryption speed is relatively fast and the applicability is good.

In order to facilitate the understanding of the data encryption and decryption method of this application, the generation process of the output calculation formula of the Henon chaotic system in this application is now described:

The Henon map is a discrete dynamic system that can generate chaotic phenomena, and its dynamic equation can be expressed as:

x ₂ (k+1) = x ₁ (k)

y(k)=x ₁ (k);

Among them, x ₁ (k) and x ₂ (k) are the state of the system, y(k) is the output of the system, x ₁ (0) and x ₂ (0) are the initial state of the system, that is, the initial value of the state at k=0. The antecedent variable of the system is x ₁ (k), and its range is x ₁ (k)∈[-d,d], d=2.

First, transform the Henon map into a TS (Takagi-Sugeno) fuzzy model, and its rules are as follows: if x ₁ (k) belongs to the fuzzy set F _i , then x(k+1)=A _i x(k)+ _bi , y(k)=C _i x(k);

Among them, x(k)=[x ₁ (k) x ₂ (k)] ^T is the state vector of the system; the fuzzy set is

The coefficient matrix is

and C ₁ =C ₂ to be designed. It can be seen from the above formula that the constant value item 1.4 exists in the state equation of the system. If the plaintext is directly injected into this state equation, the structure of the chaotic system will be changed, causing problems in the generation of chaotic sequences. The TS Fuzzy model (TS fuzzy model) of the chaotic dynamic system based on Henon mapping can be written as:

where ξ(k)=x ₁ (k),

And it satisfies μ ₁ (ξ(k))+μ ₂ (ξ(k))=1.

Suppose the encrypted data (plaintext) is m(k), and at time k,

Can be a vector. Inject the plaintext into the state equation of the Henon chaotic system, and the system is transformed into:

z(k)=Ex(k);

It can be seen that no plaintext directly enters the system state channel, but directly enters the system output equation, and the through matrix is D _i ;

Simplify the system and define the properties of the output matrix C _i , E and the through matrix D _i , and let b=b ₁ =b ₂ , we can get:

y(k)=Cx(k)+Dm(k);

z(k)=Ex(k);

Among them, the data-injected Henon chaotic system fixes the output matrix C. Here, E is chosen to be any invertible matrix, and the direct matrix D is non-singular. The constructed data-injected Henon chaotic system can be shown in Figure 2, etc., including adders, shifters, registers, etc., and the input, output, and stored data of each device can be shown in the figure.

The following flatness-based security level verification is used to verify the encryption and decryption functions of the Henon chaotic system in this application:

The traditional classic self-synchronizing stream cipher (Self-synchronizing stream cipher) algorithm means that the keystream (key stream) is generated by a function obtained by fixing the previous ciphertext bits. The encryption process is as follows:

c _e (k) = ε(X _e (k), m (k));

Among them, X _e is the key stream, Θ is the key, m(k) is the plaintext at time k, c _e (k) is the ciphertext at time k,

Is the key stream generation function, ε is the encryption function, l is a constant, τ _d is the memory delay. From the expression, it is clear that the key stream of the self-synchronizing stream encryption method depends on the ciphertext and the ciphertext of a fixed number of steps in the past, and this fixed number of steps depends on τ _d . The equivalent implementation of the Henon chaotic encryption system and the self-synchronizing stream encryption algorithm based on system flatness is given below.

The first step is to verify the flatness of the Henon chaotic encryption system: According to the definition of flatness, the state and input of a system can be represented by the output and the leading or late bits of the output. Such a system is a flat system, and it is also an extension of the controllability of a linear system in a nonlinear system. Therefore, according to the dynamic equation of the Henon chaotic system, the invertibility of the output matrix gives the expression of the state with respect to the output, namely

In addition, substituting the Henon equation of state into x(k-1) gives

Because D is full rank, the plaintext m(k) is expressed as

here

is the matrix

the pseudo-inverse of

Therefore, the data-injected Henon chaotic encryption system meets the flatness requirement;

The second step, equivalence relationship: the state equation and output equation of the data-injected Henon chaotic encryption system can be rewritten as:

Therefore, taking the initial value of the system as the key, that is, Θ=x(0), the one-to-one correspondence between the data-injected Henon chaotic encryption system and the traditional self-synchronizing stream encryption is as follows:

Key generator:

Key stream: X _e ≡ x;

Ciphertext:

Encryption function:

Memory delay: τ _d ≡ |1-0|=1.

Therefore, it can be seen that the data-injected Henon chaotic encryption system is completely equivalent to a traditional self-synchronizing stream encryption technology. This mathematical equivalence can guarantee the security level of the data-injected Henon chaotic encryption system.

Please refer to FIG. 3 . FIG. 3 is a second flowchart of a data encryption and decryption method provided by an embodiment of the present application.

Step S201: Obtain an encryption result, wherein the encryption result is obtained based on system parameters, which are obtained by operating the target data through the output calculation formula of the Henon chaotic system, and the system parameters are the parameters of the Henon chaotic system obtained after converting the key information of the target data.

Step S202: Obtain system parameters.

Step S203: Decrypt the encrypted result based on the system parameters to obtain the target data.

In a specific application scenario, the plaintext m(k) is represented by the ciphertext y(k), z(k) and y(k-1), z(k-1), so in the process of decrypting the encrypted result based on the system parameters to obtain the target data, the encrypted result can be decrypted based on the system parameters through the decryption formula to obtain the target data;

The decryption formula includes:

ξ(k)=x ₁ (k);

E represents an invertible matrix;

Represents the pseudoinverse of a matrix.

For the description of the corresponding steps in this application, reference may be made to the above-mentioned records, and details are not repeated here.

Please refer to FIG. 4 . FIG. 4 is a schematic diagram of a first structure of a data encryption and decryption system provided by an embodiment of the present application.

A data encryption and decryption system provided in an embodiment of the present application may include:

The first obtaining module 101 is used to obtain the target data to be encrypted;

The first conversion module 102 is used to convert the key information of the target data into the system parameters of the Henon chaotic system;

The first encryption module 103 is configured to perform calculation on the target data through the output calculation formula of the Henon chaotic system based on the system parameters, and obtain an encryption result of the target data.

In a data encryption and decryption system provided in an embodiment of the present application, the first encryption module may include:

The first encryption unit is used to calculate the target data by the output calculation formula of the Henon chaotic system based on the system parameters, to obtain the encryption result of the target data;

The output calculation formula of the Henon chaotic system includes:

y(k)=Cx(k)+Dm(k); z(k)=Ex(k);

ξ(k)=x ₁ (k);

x(k)=[x ₁ (k) x ₂ (k)] ^T ;

D represents a non-singular through matrix;

In a data encryption and decryption system provided in an embodiment of the present application, the first conversion module may include:

The first conversion unit is used to convert the key information of the target data into the state value of the Henon chaotic system.

The second conversion unit is used to convert the key information of the target data into corresponding values of Ai and/or output matrix in the Henon chaotic system.

The third conversion unit is used to convert the key information of the target data into the b value in the Henon chaotic system.

Please refer to FIG. 5 . FIG. 5 is a schematic diagram of a second structure of a data encryption and decryption system provided by an embodiment of the present application.

The second acquisition module 201 is used to obtain the encryption result, wherein the encryption result is based on the system parameters, and the target data is calculated by the output calculation formula of the Henon chaotic system, and the system parameters are the parameters of the Henon chaotic system obtained after converting the key information of the target data;

A third acquisition module 202, configured to acquire system parameters;

The first decryption module 203 is configured to decrypt the encryption result based on the system parameters to obtain the target data.

In a data encryption and decryption system provided in an embodiment of the present application, the first decryption module may include:

The first decryption unit is used to decrypt the encryption result based on the system parameters through the decryption formula to obtain the target data;

The decryption formula includes:

ξ(k)=x ₁ (k);

; E represents an invertible matrix;

Represents the pseudoinverse of a matrix.

The present application also provides a data encryption and decryption device and a non-volatile readable storage medium, both of which have corresponding effects of the data encryption and decryption method provided in the embodiments of the present application. Please refer to FIG. 6 . FIG. 6 is a schematic structural diagram of a data encryption and decryption device provided in an embodiment of the present application.

A data encryption and decryption device provided in an embodiment of the present application includes a memory 201 and a processor 202, a computer program is stored in the memory 201, and the processor 202 implements the following steps when executing the computer program:

Obtain the target data to be encrypted;

A data encryption and decryption device provided in the embodiment of the present application includes a memory 201 and a processor 202. A computer program is stored in the memory 201. When the processor 202 executes the computer program, the following steps are implemented: based on the system parameters, the target data is calculated through the output calculation formula of the Henon chaotic system to obtain the encryption result of the target data;

The output calculation formula of the Henon chaotic system includes:

y(k)=Cx(k)+Dm(k); z(k)=Ex(k);

ξ(k)=x ₁ (k);

x(k)=[x ₁ (k) x ₂ (k)] ^T ;

D represents a non-singular through matrix;

A data encryption and decryption device provided in the embodiment of the present application includes a memory 201 and a processor 202. A computer program is stored in the memory 201. When the processor 202 executes the computer program, the following steps are implemented: converting the key information of the target data into the state value of the Henon chaotic system.

A data encryption and decryption device provided in the embodiment of the present application includes a memory 201 and a processor 202. A computer program is stored in the memory 201. When the processor 202 executes the computer program, the following steps are implemented: converting the key information of the target data into the corresponding values of Ai and/or the output matrix in the Henon chaotic system.

A data encryption and decryption device provided in the embodiment of the present application includes a memory 201 and a processor 202. A computer program is stored in the memory 201. When the processor 202 executes the computer program, the following steps are implemented: converting the key information of the target data into the b value in the Henon chaotic system.

Get system parameters;

A data encryption and decryption device provided in an embodiment of the present application includes a memory 201 and a processor 202. A computer program is stored in the memory 201. When the processor 202 executes the computer program, the following steps are implemented: decrypt the encryption result based on the system parameters through a decryption formula to obtain target data;

The decryption formula includes:

ξ(k)=x ₁ (k);

E represents an invertible matrix;

Represents the pseudoinverse of a matrix.

Referring to FIG. 7 , another data encryption and decryption device provided by the embodiment of the present application may further include: an input port 203 connected to the processor 202 for transmitting externally input commands to the processor 202; a display unit 204 connected to the processor 202 for displaying the processing results of the processor 202 to the outside world; a communication module 205 connected to the processor 202 for realizing communication between the data encryption and decryption device and the outside world. The display unit 204 can be a display panel, a laser scanning display, etc.; the communication methods adopted by the communication module 205 include but are not limited to mobile high-definition link technology (Mobile High-Definition Link, MHL), universal serial bus (Universal Serial Bus, USB), high-definition multimedia interface (High Definition Multimedia Interface, HDMI), wireless connection: wireless fidelity technology (Wireless Fidelity, WiFi), bluetooth communication technology, low power consumption bluetooth communication technology , Communication technology based on IEEE802.11s (Institute of Electrical an Electronics Engineers, Institute of Electrical and Electronics Engineers).

Referring to FIG. 8 , the embodiment of the present application also provides a non-volatile readable storage medium. A computer program 31 is stored on the non-volatile readable storage medium 30. When the computer program 31 is executed by a processor, the following steps are implemented:

Obtain the target data to be encrypted;

In the non-volatile readable storage medium provided by the embodiment of the present application, a computer program is stored in the non-volatile readable storage medium. When the computer program is executed by the processor, the following steps are implemented: based on the system parameters, the target data is calculated through the output calculation formula of the Henon chaotic system, and the encryption result of the target data is obtained;

The output calculation formula of the Henon chaotic system includes:

y(k)=Cx(k)+Dm(k); z(k)=Ex(k);

ξ(k)=x ₁ (k);

x(k)=[x ₁ (k) x ₂ (k)] ^T ;

D represents a non-singular through matrix;

In the non-volatile readable storage medium provided by the embodiment of the present application, a computer program is stored in the non-volatile readable storage medium. When the computer program is executed by a processor, the following steps are implemented: converting the key information of the target data into the state value of the Henon chaotic system.

In the non-volatile readable storage medium provided by the embodiment of the present application, a computer program is stored in the non-volatile readable storage medium. When the computer program is executed by a processor, the following steps are implemented: converting the key information of the target data into the corresponding values of Ai and/or the output matrix in the Henon chaotic system.

In the non-volatile readable storage medium provided by the embodiment of the present application, a computer program is stored in the non-volatile readable storage medium. When the computer program is executed by a processor, the following steps are implemented: converting the key information of the target data into the b value in the Henon chaotic system.

In the non-volatile readable storage medium provided in the embodiment of the present application, a computer program is stored in the non-volatile readable storage medium. When the computer program is executed by a processor, the following steps are implemented:

Get system parameters;

In the non-volatile readable storage medium provided by the embodiment of the present application, a computer program is stored in the non-volatile readable storage medium. When the computer program is executed by the processor, the following steps are implemented: decrypt the encrypted result based on the system parameters through a decryption formula to obtain the target data;

The decryption formula includes:

ξ(k)=x ₁ (k);

E represents an invertible matrix;

Represents the pseudoinverse of a matrix.

The non-volatile readable storage medium involved in the present application includes random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the technical field.

For the description of relevant parts of the data encryption and decryption system, equipment, and non-volatile readable storage medium provided in the embodiment of the present application, please refer to the detailed description of the corresponding part in the data encryption and decryption method provided in the embodiment of the present application, and details are not repeated here. In addition, the parts of the technical solutions provided in the embodiments of the present application that are consistent with the implementation principles of the corresponding technical solutions in the prior art are not described in detail, so as not to repeat them too much.

It should also be noted that in this document, relational terms such as first and second etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements but also other elements not expressly listed or which are inherent to such process, method, article or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

A data encryption and decryption method, characterized in that, comprising:

Obtain the target data to be encrypted;

Convert the key information of the target data into system parameters of the Henon chaotic system;

Based on the system parameters, the target data is calculated through the output calculation formula of the Henon chaotic system to obtain an encryption result of the target data.
The method according to claim 1, wherein, based on the system parameters, the target data is calculated by the output calculation formula of the Henon chaotic system to obtain the encryption result of the target data, including:

Based on the system parameters, the target data is calculated through the output calculation formula of the Henon chaotic system to obtain the encryption result of the target data;

The output operation formula of described Henon chaotic system comprises:

y(k)=Cx(k)+Dm(k); z(k)=Ex(k);

x(k)=[x 1 (k) x 2 (k)] T ;

Wherein, m (k) represents the described target data when k moment; y (k), z (k) represent described encryption result; C represents the output matrix of described Henon chaotic system,
D represents a non-singular through matrix;
b and d represent preset parameter values, and x 1 (k)∈[-d, d]; x 1 (k) and x 2 (k) represent the two state values of the Henon chaotic system; T represents the transposition of the matrix; E represents the reversible matrix.
The method according to claim 2, wherein the target data includes text data and image data, and the acquiring the target data to be encrypted comprises:

Obtain text data and/or image data to be encrypted.
The method according to claim 3, wherein said converting the key information of said target data into system parameters of a Henon chaotic system comprises:

By mapping the key information of the text data and/or the image data into system parameters of the Henon chaotic system, the key information is encrypted.
The method according to claim 4, characterized in that said encrypting said key information by mapping the key information of said text data and/or said image data as system parameters of said Henon chaotic system comprises:

The key information of the text data and/or the image data is mapped to the system parameters of the Henon chaotic system according to the preset parameter type and preset parameter quantity, and the key information is encrypted.
The method according to claim 2, wherein said converting the key information of said target data into system parameters of a Henon chaotic system comprises:

The key information of the target data is converted into the state value of the Henon chaotic system.
The method according to claim 2, wherein said converting the key information of said target data into system parameters of a Henon chaotic system comprises:

converting the key information of the target data into corresponding values of A i and/or the output matrix in the Henon chaotic system.
The method according to claim 7, wherein said converting the key information of said target data into the corresponding values of A i and/or said output matrix in said Henon chaotic system comprises:

Converting the key information of the target data into one or more of a 11 , a 12 , a 21 , a 22 of A i in the Henon chaotic system;

And/or, converting the key information of the target data into corresponding values of the output matrix in the Henon chaotic system.
The method according to claim 7, wherein said converting the key information of said target data into the corresponding value of said output matrix in said Henon chaotic system comprises:

converting the key information of the target data into one or more of c 11 , c 12 , c 21 , c 22 of the output matrix in the Henon chaotic system.
The method according to claim 2, wherein said converting the key information of said target data into system parameters of a Henon chaotic system comprises:

The key information of the target data is converted into the b value in the Henon chaotic system.
A data encryption and decryption method, characterized in that, comprising:

Obtain an encryption result, wherein the encryption result is based on a system parameter, and the target data is obtained by calculating the output formula of the Henon chaotic system, and the system parameter is the parameter of the Henon chaotic system obtained after converting the key information of the target data;

Obtain the system parameters;

The encrypted result is decrypted based on the system parameters to obtain the target data.
The method according to claim 11, wherein said decrypting said encrypted result based on said system parameters to obtain said target data comprises:

Decrypting the encryption result based on the system parameters through a decryption formula to obtain the target data;

The decryption formula includes:

Wherein, m (k) represents the described target data when k moment; D represents non-singular straight-through matrix; y (k), z (k) represents described encryption result; C represents the output matrix of described Henon chaotic system,
E represents an invertible matrix;
B, d represent preset parameter values, and x 1 (k) ∈ [-d, d]; x 1 (k) represents a state value of the Henon chaotic system;
Represents the pseudoinverse of a matrix.
method according to claim 12, is characterized in that, described system parameter comprises the state value of described Henon chaotic system, and described state value comprises x 1 (k), and described acquisition described system parameter comprises:

Obtain x 1 (k) in the state value of the Henon chaotic system.
The method according to claim 12, wherein the system parameters include A i in the Henon chaotic system, and the obtaining the system parameters includes:

Acquire one or more of a 11 , a 12 , a 21 , and a 22 of A i in the Henon chaotic system.
The method according to claim 12, wherein the system parameters include the corresponding values of the output matrix in the Henon chaotic system, and the obtaining of the system parameters includes:

Acquire one or more of c 11 , c 12 , c 21 , c 22 of the corresponding values of the output matrix in the Henon chaotic system.
The method according to claim 12, wherein the system parameters include the preset parameter value, the preset parameter value includes b, and the acquiring the system parameter includes:

Obtain the b value in the Henon chaotic system.
The method according to claim 11, wherein the target data includes text data and image data, and decrypting the encrypted result based on the system parameters to obtain the target data includes:

Decrypt the encrypted result based on the system parameters to obtain decrypted text data and/or image data.
A data encryption and decryption system, characterized in that it comprises:

The first obtaining module is used to obtain the target data to be encrypted;

The first conversion module is used to convert the key information of the target data into the system parameters of the Henon chaotic system;

The first encryption module is configured to perform an operation on the target data through the output operation formula of the Henon chaotic system based on the system parameters to obtain an encryption result of the target data.
A data encryption and decryption device, characterized in that it includes:

memory for storing computer programs;

A processor, configured to implement the steps of the data encryption and decryption method according to any one of claims 1 to 17 when executing the computer program.
A non-volatile readable storage medium, characterized in that a computer program is stored in the non-volatile readable storage medium, and when the computer program is executed by a processor, the steps of the data encryption and decryption method according to any one of claims 1 to 17 are realized.