WO2014176926A1

WO2014176926A1 - Encrypting method and device and decrypting method and device for client script

Info

Publication number: WO2014176926A1
Application number: PCT/CN2013/091001
Authority: WO
Inventors: 任远; 姚丽梅
Original assignee: 小米科技有限责任公司
Priority date: 2013-04-28
Filing date: 2013-12-31
Publication date: 2014-11-06
Also published as: CN103246830A; CN103246830B

Abstract

The embodiments of this disclosure disclose an encrypting method and device and decrypting method and device for a client script, which are used for solving the problems of easy to decrypt, imperfect code protection and high development difficulty existing in the current client script encryption technology. The above-mentioned encrypting method comprises: according to a rule of correspondence between digits and characters, converting each character in a client script into a corresponding digit, wherein the digit respectively corresponding to each character is an integer in the range of [0, 255], and the digits respectively corresponding to each character are different; and according to a correlation between digits corresponding to each character in the client script and the components of red, green and blue Alpha (RGBA) channels of pixels in pictures, generating a picture by taking the digits corresponding to each character as corresponding component values of corresponding pixels in the picture. The embodiments of this disclosure improve the security of the client script, the protection is better, and the development difficulty is lower.

Description

The present invention is based on a Chinese patent application with the application number 201310156278.3 and the application date of 2013/4/28, and claims the priority of the Chinese patent application, the Chinese patent The entire contents of the application are incorporated herein by reference. Technical field

The present disclosure relates to the field of security protection technologies for mobile terminals, and in particular, to an encryption processing method and a device and a decryption processing method and apparatus for client scripts. Background technique

With the rapid development of the Internet industry, the content of web clients has become more and more abundant, and the number of executable scripts (usually Javascript) in web pages has grown rapidly. At the same time, a large number of web scripts bring a lot of security vulnerabilities. Web hackers can usually view executable scripts of a web page (the execution prerequisites of client scripts must be downloaded to the user's browser, so usually this part of the code is The source code directly exposed to the user, analyzing web page vulnerabilities, poses a serious challenge to the security of the website. The client-side scripting encryption technology can not solve the security vulnerability problem fundamentally, but it can greatly improve the attack threshold, and also avoid some people's secondary use of the code (especially some illegal commercial uses, such as building a phishing website, etc.) the behavior of.

A current client-side script encryption technology is script compression technology such as yui compressor (Yahoo UI Framework Compressor). The principle of this type of technology is to compress the script file using a server language (for example, it can be Java) before the client script is published. First read the client executable script file as a string, then remove the code comments, line breaks, spaces, tabs, etc.; at the same time confuse the variable names in the code, replace the variables with meaningless strings , then write the compressed string back to the original file. With script compression technology, the script code can't be completely hidden. The compressed script can still be viewed directly on the client, and there are many corresponding decompression code schemes.

Another current client-side scripting encryption technology is script obfuscation. A common script obfuscation tool with Google closure script confusing can completely break the organization of the original code, making the code completely unreadable. The basic principle is the same as the above script compression technology, but the code structure of the file is analyzed when the script file is read, and the code itself is re-encoded. Using script obfuscation techniques, developers who require script code strictly follow the syntax of the code (client-side scripts are usually very flexible, such as not having to write a semicolon at the end of the code, without the use of braces after the if statement), which is true. The quality of the developed code itself presents a rigorous challenge.

It can be seen that the current client-side script encryption technology has the problems of being easily decrypted, the code protection is imperfect, and the development is difficult. Summary of the invention The embodiments of the present disclosure provide a method and a device for encrypting a client script, and a decryption processing method and device, which are used to solve the problem that the current client-side script encryption technology is easy to be decrypted, the code protection is imperfect, and the development is difficult.

In one aspect, an embodiment of the present disclosure provides a method for encrypting a client script, including:

According to the corresponding rules of numbers and characters, each character in the client script is converted into a corresponding number, wherein each character corresponding to each character is an integer in the range [0, 255], and the corresponding number of each character is not According to the correspondence between the number corresponding to each character in the client script and the red, green, and blue alpha channel RGBA component of the pixel in the image, the number corresponding to each character is used as the corresponding component of the corresponding pixel in the image. Value, generate a picture.

Wherein, in one embodiment, the number is an information exchange code;

Converting each character in the client script to a corresponding number according to a correspondence rule of numbers and characters, including:

Each character in the client script is converted to a corresponding information exchange code using the information exchange code conversion function of the server language.

In an embodiment, the correspondence between the number corresponding to each character in the client script and the RGBA component of the pixel in the image may include:

The number corresponding to each successive three characters in the client script sequentially corresponds to the R component, the G component, and the B component of the corresponding pixel in the image; or

Each of the characters in the client script corresponds to a number corresponding to an R component, a G component, a B component, or an alpha channel component of a corresponding pixel in the picture.

In one embodiment, when the number corresponding to each consecutive three characters in the client script sequentially corresponds to the R component, the G component, and the B component of the corresponding pixel in the image, the alpha of the image is The channel value is 0.

In an embodiment, after the generating a picture, the processing method further includes:

Send the picture to the client.

In another aspect, an embodiment of the present disclosure provides a decryption processing method for a client script, including: acquiring an RGBA component value of a pixel in a picture;

Determining a number corresponding to each character in the client script according to a correspondence between a number corresponding to each character in the client script and an RGBA component of the pixel in the image;

According to the correspondence rule of numbers and characters, the numbers corresponding to each character in the client script are converted into corresponding characters, wherein each character corresponding to each character is an integer in the range [0, 255], and each character The corresponding numbers are not the same;

The converted characters are sequentially spliced to form a client-side executable client script.

Wherein, in one embodiment, the number is an information exchange code;

Converting the number corresponding to each character in the client script into a corresponding character according to the corresponding rule of the number and the character, including:

Using the information exchange code conversion function of the client script, the letter corresponding to each character in the client script The exchange code is converted to the corresponding character.

In one embodiment, the correspondence between the number corresponding to each character in the client script and the RGBA component of the pixel in the image includes:

In an embodiment, before the acquiring the RGBA component value of the pixel in the image, the processing method further includes:

Receiving the picture sent by the server.

An embodiment of the present disclosure provides an encryption processing apparatus for a client script, including:

a conversion module, configured to convert each character in the client script into a corresponding number according to a correspondence rule of numbers and characters, wherein each character corresponds to an integer in the range of [0, 255], and each character The corresponding numbers are not the same;

a generating module, configured to use, according to a correspondence between a number corresponding to each character in the client script and an RGBA component of a pixel in the image, a number corresponding to each character as a corresponding component value of a corresponding pixel in the image, Generate a picture.

In an embodiment, the converting module may include:

The conversion submodule is configured to convert each character in the client script into a corresponding information exchange code by using an information exchange code conversion function of the server language.

In one embodiment, the processing device may further include:

a storage module, configured to store a correspondence between a number corresponding to each character in the client script and an RGBA component of a pixel in the image, including: a number corresponding to each consecutive three characters in the client script, sequentially corresponding The R component, the G component, and the B component of the corresponding pixel in the picture; or the corresponding number of each character in the client script, respectively, and the R component, the G component, and the B component of the corresponding pixel in the picture Or the alpha channel component corresponds; and/or

And a sending module, configured to send the image to the client after the generating module generates the image. In another aspect, an embodiment of the present disclosure provides a decryption processing apparatus for a client script, including: an acquiring module, configured to acquire an RGBA component value of a pixel in a picture;

a determining module, configured to use a number corresponding to each character in the client script and a pixel in the image

Corresponding relationship between the RGBA components, determining a number corresponding to each character in the client script;

a conversion module, configured to convert a number corresponding to each character in the client script into a corresponding character according to a correspondence rule of numbers and characters, wherein each character corresponding to each character is an integer in a range of [0, 255] , and each character has a different number;

The splicing module is configured to sequentially splicing the converted characters to form a client-side executable client script. In an embodiment, the converting module may include:

The conversion submodule is configured to convert the information exchange code corresponding to each character in the client script into a corresponding character by using an information exchange code conversion function of the client script.

In one embodiment, the processing device may further include:

a storage module, configured to store a correspondence between a number corresponding to each character in the client script and an RGB component of a pixel in the image, including: a number corresponding to each consecutive three characters in the client script, sequentially corresponding The R component, the G component, and the B component of the corresponding pixel in the picture; or the corresponding number of each character in the client script, respectively, and the R component, the G component, and the B component of the corresponding pixel in the picture Or the alpha channel component corresponds; and/or

The receiving module is configured to receive the picture sent by the server before the acquiring module acquires the RGBA component value of the pixel in the picture.

Some of the beneficial effects of the present disclosure may include: Since the client script is compressed into the image, the client script cannot be viewed by a general means (for example, a code viewing tool provided by the browser), thereby improving the security of the client script. Sexuality, better protection; and, the requirements of code developers are lower, do not need to require code developers to strictly follow the code syntax of the code, as the current script obfuscation technology, the development is less difficult.

The above general description and the following detailed description are merely exemplary and are not intended to limit the disclosure. Other features and advantages of the present disclosure will be set forth in the description which follows. The objectives and other advantages of the present disclosure can be realized and obtained by the structure particularly pointed out in the written description.

The technical solutions of the present disclosure will be further described in detail below through the accompanying drawings and embodiments. DRAWINGS

The drawings are intended to provide a further understanding of the present disclosure, and are intended to be a part of the description of the invention. In the drawing:

1 is an exemplary flowchart of a method for encrypting a client script in an embodiment of the present disclosure;

2 is an exemplary flowchart of a method for decrypting a client script in an embodiment of the present disclosure;

3 is a flow chart of an exemplary method of an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of an encryption processing apparatus of a client script according to an embodiment of the present disclosure; FIG. 5 is a schematic structural diagram of another encryption processing apparatus of a client script according to an embodiment of the present disclosure; An exemplary structural diagram of a decryption processing apparatus of a client-side script in the embodiment of the present disclosure; FIG. 7 is a schematic structural diagram of another decryption processing apparatus of a client-side script in the embodiment of the present disclosure. The embodiments of the present disclosure have been shown by the above-described drawings, which will be described in more detail later. The drawings and the text are not intended to limit the scope of the present disclosure in any way, and the description of the present disclosure will be described by those skilled in the art by reference to the specific embodiments. detailed description

The preferred embodiments of the present disclosure are described with reference to the accompanying drawings, which are to be understood to illustrate

Embodiments of the present disclosure provide a method and apparatus for encrypting a client script and a decryption processing method and apparatus. Before the client script is released, the client script content is compressed into a picture; when the client requests a web page to execute the client script, the server first loads the image to the client, and then the client obtains the client from the image. Each character of the script, splicing each character into a client-side script, runs in the client.

According to the technical solution provided by the embodiment of the present disclosure, since the client script is compressed into the picture, the client script cannot be viewed by a general means (for example, a code viewing tool provided by the browser), thereby improving the security of the client script. Sexuality, better protection; and, the requirements of code developers are lower, do not need to require code developers to strictly follow the code syntax of the code, as the current script obfuscation technology, the development is less difficult.

The principle that each character information of the client script is compressed into a picture is as follows:

Each pixel in the picture is represented by four component values: red, green, blue, and alpha channels (abbreviated RGBA). Their values are integers in the range [0,255]. The client script is composed of characters. If each character in the client script is converted to an integer in the range [0, 255], and the number corresponding to each character is not the same, then the number corresponding to each character can be used as the component value of the pixel in the picture. Build an image.

The technical solutions provided by the embodiments of the present disclosure are described in detail below.

As shown in FIG. 1 , an embodiment of the present disclosure provides a method for encrypting a client script, including the following steps: In S11, each character in the client script is converted into a corresponding one according to a correspondence rule between numbers and characters. The number of each character, the number corresponding to each character is an integer in the range [0, 255], and the number corresponding to each character is different.

In one embodiment, the above number may be an ASCII code (American Standard Code for Information Interchange, referred to as an information exchange code);

At this time, according to the correspondence rule of numbers and characters, converting each character in the client script into a corresponding number may include: converting each character in the client script into a corresponding one by using an ASCII code conversion function of the server language ASCII code.

Of course, in addition to the above ASCII code, it is also possible for the programmer to specify the correspondence between numbers and characters, as long as the corresponding rule can ensure that the corresponding number of each character is an integer in the range [0, 255], and each character corresponds to each other. The numbers are not the same. According to the corresponding rule, each character in the client script is converted into a corresponding number, and then the number is used to construct the picture.

In S12, according to the correspondence between the number corresponding to each character in the client script and the RGBA component of the pixel in the picture, the number corresponding to each character is used as the corresponding component value of the corresponding pixel in the picture to generate a picture.

In an embodiment, the correspondence between the number corresponding to each character in the client script and the RGBA component of the pixel in the image may include: a number corresponding to each successive three characters in the client script, and correspondingly corresponding to the corresponding image in the image The R component, the G component, and the B component of the pixel. That is, the number corresponding to each of the three consecutive characters corresponds to the same image. Among the numbers corresponding to the three consecutive characters, the number corresponding to the first character corresponds to the R component of the pixel, the number corresponding to the second character corresponds to the G component of the pixel, and the third character corresponds to The number corresponds to the B component of the pixel; accordingly, the corresponding number of all characters of the client script is compressed into a picture.

Alternatively, the foregoing correspondence may include: a number corresponding to each character in the client script, respectively corresponding to an R component, a G component, a B component, or an Alpha channel component of a corresponding pixel in the picture.

That is, the corresponding number of each character in the client script corresponds to one component in one pixel; for example, the character "A" corresponds to the R component of the pixel A'; the character "B" corresponds to the R component of the pixel B'. The premise of using the alpha channel is that the server must store the image as an image format that can carry alpha channel information, such as PNG, when storing images.

Of course, in addition to the above two correspondences, other forms of correspondence may be used, and are not limited by the disclosure. According to the above correspondence, the number corresponding to each character is used as the corresponding component value of the corresponding pixel in the picture, and a picture is generated by the drawing program, and the picture contains the character information of the client script.

In an embodiment, when the number corresponding to each consecutive three characters in the client script sequentially corresponds to the R component, the G component, and the B component of the corresponding pixel in the image, the alpha channel value of the image is 0, It is guaranteed that the color values obtained by the drawing program when drawing the picture are correct.

After the step S12 is performed, the encryption processing method may further include: sending the image to the client.

In an embodiment, before the sending the image to the client, the encryption processing method may further include: receiving a webpage request sent by the client, requesting the client script.

At this point, the encryption process of the client script is completed.

As shown in FIG. 2, in accordance with the encryption processing method of the client script, the embodiment of the present disclosure further provides a method for decrypting a client script, including the following steps:

In S21, the RGBA component value of the pixel in the picture is acquired.

The picture is a picture generated by the above processing of step S12, and the picture contains character information of the client script.

In an embodiment, before performing step S21, the decryption processing method may further include: receiving a picture sent by the server.

In an embodiment, before receiving the picture sent by the server, the encryption processing method may further include: sending a webpage request to the server.

In S22, according to the correspondence between the number corresponding to each character in the client script and the RGBA component of the pixel in the picture, the number corresponding to each character in the client script is determined.

In an embodiment, the correspondence between the number corresponding to each character in the client script and the RGBA component of the pixel in the image may include: a number corresponding to each successive three characters in the client script, and correspondingly corresponding to the corresponding image in the image The R component, the G component, and the B component of the pixel. That is, each of the three consecutive characters corresponding to the same number corresponds to the same pixel, and the corresponding number of the three consecutive characters, the number corresponding to the first character corresponds to the R component of the pixel, and the second character The corresponding number corresponds to the G component of the pixel, the number corresponding to the third character and the B of the pixel The components correspond; accordingly, the corresponding numbers of all the characters of the client script are compressed into one picture. Alternatively, the foregoing correspondence may include: a number corresponding to each character in the client script, corresponding to an R component, a G component, a B component, or an Alpha channel component of a corresponding pixel in the image, respectively. That is, the number corresponding to each character in the client script corresponds to one component in one pixel; for example, the character "A" corresponds to the R component of the pixel A'; the character "B" corresponds to the R component of the pixel B'.

Of course, in addition to the above two correspondences, other forms of correspondence may be used, and are not limited by the disclosure. The corresponding relationship adopted in step S22 is the same as the corresponding relationship used in the foregoing step S12, so as to ensure that the number determined in step S22 is correct, and that the client script stitched out in the subsequent step S25 is correct.

In S23, according to the correspondence rule of numbers and characters, the numbers corresponding to each character in the client script are converted into corresponding characters, wherein each character corresponding to each character is an integer in the range [0, 255], and each The characters corresponding to each character are different.

The corresponding rule used in step S23 is consistent with the corresponding rule used in the foregoing step S11, so as to ensure that the number determined in step S23 is correct, and that the client script stitched out in the subsequent step S24 is correct.

Correspondingly, if the number in the foregoing step S11 is ASCII code; in step S11, the ASCII code conversion function of the server language is used, then in step S23, according to the correspondence rule of numbers and characters, each character in the client script is respectively The corresponding number is converted into a corresponding character, which may include:

The ASCII code conversion function of the client script is used to convert the ASCII code corresponding to each character in the client script into a corresponding character.

The conversion function in step S11 and step S23 is preferably a corresponding matching conversion function, so as to ensure that the number determined by S23 is correct, so as to ensure that the client script stitched out in the subsequent step S24 is correct.

The above correspondence, corresponding rules, and number conversion functions can be pre-negotiated by the server and the client to maintain matching, so as to ensure that the client scripts spliced in the subsequent step S25 are correct.

In S24, the converted characters are sequentially spliced to form a client-side executable client script.

At this point, the decryption process of the client script is completed.

It should be noted that the execution body of the encryption processing method and the decryption processing method of the foregoing client script provided by the embodiment of the present disclosure may be a server, a client, or another device, and the embodiment of the present disclosure is not limited.

The encryption processing method and the decryption processing method of the above client script provided by the embodiment of the present disclosure compress the client script into a picture, so that the client script cannot be viewed by a general means (for example, a code viewing tool provided by the browser, etc.) ), the security of the client script is improved, the protection is more perfect; and the requirements for the code developer are lower, and it is not necessary to require the code developer to strictly follow the syntax specification of the code as the current script obfuscation technique, and the development difficulty is low. .

The technical solutions provided by the embodiments of the present disclosure are described below in a specific embodiment.

This embodiment is applicable to browsers that support Canvas drawing technology under various mobile or non-mobile platforms (including ios, android, mac, pc, etc.). The server and the client are pre-negotiated, and the above correspondence is defined as: Client script The ASCII code corresponding to each of the three consecutive characters is sequentially corresponding to the R component, the G component, and the B of the corresponding pixel in the picture. As shown in FIG. 3, the flow of this embodiment is as follows:

In S31, the client sends a webpage request to the server to request a client script.

In S32, after receiving the webpage request sent by the client, the server converts each character in the client script into a corresponding ASCII code by using an ASCII code conversion function of the server language.

For example, the ASCII code conversion function of the server language can be the charCodeAt function used in Java.

In S33, the server sequentially takes the ASCII code corresponding to each successive three characters in the client script as the R component value, the G component value, and the B component value of the corresponding pixel, and takes the alpha channel of all pixels to 0. Generate a picture.

This will ensure that the color values that Canva gets when drawing the image are correct.

In S34, the server sends the generated picture to the client.

In S35, after receiving the image, the client uses the Canvas image redraw interface to draw the image data on the Canvas, and uses the getlmageData interface provided by the Canvas to obtain the R component value, the G component value, and B of each pixel in the image. Component value.

In S36, the client converts the R component value, the G component value, and the B component value of each pixel into an ASCII code by using an ASCII code conversion function of the client script, thereby obtaining each character corresponding to each character in the client script. ASCII code.

For example, the ASCII code conversion function of the client script can be the fromCharCodeJava function used in Javascript.

In S37, the client sequentially splices the corresponding ASCII code of each character to obtain a client-side script that the client can run.

In S38, the client runs the client script to enable the user to see the requested web page content.

It can be seen that, in this embodiment, the client script is compressed into a picture, so that the client script cannot be viewed by a general means (for example, a code viewing tool provided by the browser), thereby improving the security of the client script and improving the protection. Moreover, the requirements for code developers are lower, and it is not necessary to require code developers to strictly follow the syntax of the code as the current script obfuscation technique is, and the development is less difficult.

The above charCodeAt function is a function that strictly follows the ASCII conversion rules, complete conversion tables and rules such as

F Table 1 shows:

Octade hexadecimal character octal hexadecimal decimal character

00 00 0 nul 100 40 64 @

01 01 1 soh 101 41 65 A

02 02 2 stx 102 42 66 B

03 03 3 etx 103 43 67 C

04 04 4 eot 104 44 68 D 6

00T60/C10ZN3/X3d 47 27 39 147 67 103 g

50 28 40 ( 150 68 104 h

51 29 41 ) 151 69 105 i

52 2a 42 152 6a 106 j

53 2b 43 + 153 6b 107 k

54 2c 44 154 6c 108 1

55 2d 45 - 155 6d 109 m

56 2e 46 156 6e 110 n

57 2f 47 1 157 6f 111 o

60 30 48 0 160 70 112 P

61 31 49 1 161 71 113 q

62 32 50 2 162 72 114 r

63 33 51 3 163 73 115 s

64 34 52 4 164 74 116 t

65 35 53 5 165 75 117 u

66 36 54 6 166 76 118 V

67 37 55 7 167 77 119 w

70 38 56 8 170 78 120 X

71 39 57 9 171 79 121 y

72 3a 58 172 7a 122 z

73 3b 59 173 7b 123 {

74 3c 60 < 174 7c 124 1

75 3d 61 = 175 7d 125 }

76 3e 62 > 176 7e 126

77 3f 63 177 7f 127 del

Table 1

As shown in FIG. 4, in accordance with the encryption processing method of the client script provided by the embodiment of the present disclosure, the embodiment of the present disclosure further provides a client-side script encryption processing apparatus, including:

The conversion module 41 is configured to convert each character in the client script into a corresponding number according to a correspondence rule of numbers and characters, wherein each character corresponding to each character is an integer in a range of [0, 255], and each The characters corresponding to the characters are not the same;

The generating module 42 is configured to generate a picture according to the corresponding relationship between the number corresponding to each character in the client script and the RGBA component of the pixel in the picture, and the number corresponding to each character as the corresponding component value of the corresponding pixel in the picture.

In an embodiment, the foregoing conversion module may include: The conversion submodule is configured to convert each character in the client script into a corresponding ASCII code by using an ASCII code conversion function of the server language.

As shown in FIG. 5, in an embodiment, the foregoing encryption processing apparatus may further include any one of the following storage modules 51, the transmission module 52, or two modules:

The storage module 51 is configured to store a correspondence between a number corresponding to each character in the client script and an RGB component of the pixel in the image, including: a number corresponding to each consecutive three characters in the client script, and correspondingly corresponding to the image The R component, the G component, and the B component of the pixel; or the respective numbers corresponding to each character in the client script, respectively corresponding to the R component, the G component, the B component, or the Alpha channel component of the corresponding pixel in the picture;

The sending module 52 is configured to send the image to the client after the generating module 42 generates the image.

As shown in FIG. 6, the decryption processing method of the client script provided by the embodiment of the present disclosure, the embodiment of the present disclosure provides a decryption processing apparatus for the client script, including:

The obtaining module 61 is configured to obtain an RGBA component value of a pixel in the picture;

a determining module 62, configured to determine, according to a correspondence between a number corresponding to each character in the client script and an RGBA component of the pixel in the image, a number corresponding to each character in the client script;

The conversion module 63 is configured to convert, according to a correspondence rule of numbers and characters, a number corresponding to each character in the client script into a corresponding character, where a number corresponding to each character is an integer in a range of [0, 255], And each character has a different number;

The splicing module 64 is configured to sequentially splicing the converted characters to form a client-side executable client script. In one embodiment, the conversion module can include:

The conversion submodule is configured to convert the corresponding ASCII code of each character in the client script into a corresponding character by using an ASCII code conversion function of the client script.

As shown in FIG. 7, in one embodiment, the above decryption processing apparatus may further include any one of the following storage modules 71, the receiving module 72, or two modules:

The storage module 71 is configured to store a correspondence between a number corresponding to each character in the client script and an RGB component of the pixel in the image, and includes: a number corresponding to each consecutive three characters in the client script, and correspondingly corresponding to the image The R component, the G component, and the B component of the pixel; or the respective numbers corresponding to each character in the client script, respectively corresponding to the R component, the G component, the B component, or the Alpha channel component of the corresponding pixel in the picture;

The receiving module 72 is configured to receive the foregoing picture sent by the server before the obtaining module 61 acquires the RGBA component value of the pixel in the picture.

Those skilled in the art will appreciate that embodiments of the present disclosure can be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.

The present disclosure is directed to a flowchart of a method, apparatus (system), and computer program product according to an embodiment of the present disclosure. And I or block diagram to describe. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flow and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more flows of the flowchart or a block or blocks of the I or block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It is apparent that those skilled in the art can make various modifications and variations to the present disclosure without departing from the spirit and scope of the disclosure. Thus, it is intended that the present invention cover the modifications and the modifications

Claims

Rights request

1. An encryption processing method for client scripts, characterized by including:

According to the corresponding rules between numbers and characters, convert each character in the client script into the corresponding number. The number corresponding to each character is an integer in the range [0,255], and the number corresponding to each character is not The same; according to the number corresponding to each character in the client script and the red, green and blue alpha channels of the pixels in the image

According to the corresponding relationship between the RGBA components, the number corresponding to each character is used as the corresponding component value of the corresponding pixel in the picture to generate a picture.

2. The encryption processing method as claimed in claim 1, characterized in that,

The numbers are information exchange codes;

According to the corresponding rules between numbers and characters, each character in the client script is converted into the corresponding number, including:

Use the information exchange code conversion function of the server language to convert each character in the client script into the corresponding information exchange code.

3. The encryption processing method according to claim 1 or 2, characterized in that the corresponding relationship between the number corresponding to each character in the client script and the RGBA component of the pixel in the picture includes:

The numbers corresponding to each three consecutive characters in the client script correspond in sequence to the R component, G component, and B component of the corresponding pixel in the picture; or

The number corresponding to each character in the client script corresponds to the R component, G component, B component or Alpha channel component of the corresponding pixel in the picture.

4. The encryption processing method according to claim 3, characterized in that when the numbers corresponding to each three consecutive characters in the client script correspond to the R component, G component, and G component of the corresponding pixel in the picture in sequence, For the B component, the Alpha channel value of the picture is 0.

5. The encryption processing method according to claim 1, wherein after generating a picture, the processing method further includes:

Send said image to the client.

6. A client script decryption processing method, characterized by including:

Get the RGBA component value of the pixel in the picture;

According to the corresponding relationship between the number corresponding to each character in the client script and the RGBA component of the pixel in the picture, determine the number corresponding to each character in the client script;

According to the corresponding rules between numbers and characters, the numbers corresponding to each character in the client script are converted into corresponding characters, where the number corresponding to each character is an integer in the range [0,255], and each character The corresponding numbers are different;

The converted characters are sequentially spliced to form a client script executable by the client.

7. The decryption processing method according to claim 6, characterized in that,

The numbers are information exchange codes; According to the corresponding rules between numbers and characters, the numbers corresponding to each character in the client script are converted into corresponding characters, including:

The information exchange code conversion function of the client script is used to convert the information exchange code corresponding to each character in the client script into the corresponding character.

8. The decryption processing method according to claim 6 or 7, characterized in that the corresponding relationship between the number corresponding to each character in the client script and the RGBA component of the pixel in the picture includes:

9. The decryption processing method according to claim 6, characterized in that, before obtaining the RGBA component value of the pixel in the picture, the processing method further includes:

Receive the picture sent by the server.

10. An encryption processing device for client scripts, characterized in that it includes:

The conversion module is used to convert each character in the client script into the corresponding number according to the corresponding rules of numbers and characters. The number corresponding to each character is an integer in the range [0,255], and each character The corresponding numbers are different;

A generation module configured to use the number corresponding to each character as the corresponding component value of the corresponding pixel in the picture based on the corresponding relationship between the number corresponding to each character in the client script and the RGBA component of the pixel in the picture, Generate an image.

11. The encryption processing device according to claim 10, wherein the conversion module includes: a conversion sub-module for converting each character in the client script into The corresponding information exchange code.

12. The encryption processing device according to claim 10, characterized in that, the encryption processing device further includes: a storage module, used to store the numbers corresponding to each character in the client script and the RGBA components of the pixels in the picture. The corresponding relationship includes: the number corresponding to each three consecutive characters in the client script, which corresponds in sequence to the R component, G component, and B component of the corresponding pixel in the picture; or each character in the client script The numbers corresponding to each character respectively correspond to the R component, G component, B component or Alpha channel component of the corresponding pixel in the picture; and/or

A sending module, configured to send the picture to the client after the generating module generates the picture.

13. A client-side script decryption processing device, characterized in that it includes:

Obtain module, used to obtain the RGBA component value of the pixel in the picture;

A determination module configured to determine the number corresponding to each character in the client script based on the corresponding relationship between the number corresponding to each character in the client script and the RGBA component of the pixel in the picture;

The conversion module is used to convert each character in the client script into a corresponding one according to the corresponding rules of numbers and characters. The numbers are converted into corresponding characters, where the number corresponding to each character is an integer in the range [0,255], and the number corresponding to each character is different;

The splicing module is used to splice the converted characters in sequence to form a client script executable by the client.

14. The decryption processing device according to claim 13, characterized in that the conversion module includes: a conversion sub-module for using the information exchange code conversion function of the client script to convert each character in the client script The corresponding information exchange codes are converted into corresponding characters.

15. The decryption processing device according to claim 13, characterized in that, the decryption processing device further includes: a storage module, used to store the number corresponding to each character in the client script and the RGB components of the pixels in the picture. The corresponding relationship includes: the number corresponding to each three consecutive characters in the client script, which corresponds in sequence to the R component, G component, and B component of the corresponding pixel in the picture; or each character in the client script The numbers corresponding to each character respectively correspond to the R component, G component, B component or Alpha channel component of the corresponding pixel in the picture; and/or

A receiving module, configured to receive the picture sent by the server before the obtaining module obtains the RGBA component value of the pixel in the picture.