CN102708112A - Method for randomly generating verification graph and question set - Google Patents

Abstract

The invention discloses a method for randomly generating verification graphics and question groups. The method is applied to a verification server. The verification server is provided with a graphics database. The graphics database stores multiple object graphics. Each object graphics is individually Corresponding to an object name, the verification server randomly selects multiple object graphics from the graphics database as a verification pattern, places the verification patterns in a predetermined frame, and detects the characteristics of each verification pattern in sequence. boundary range, and determine whether each of the verification graphics overlaps with other verification graphics; when it is determined that each verification graphics does not overlap with other verification graphics, make the predetermined frame together with the verification graphics therein into a frame of verification graphics; And generate at least one question group and at least one answer corresponding to it according to the object name and quantity of the verification pattern in the verification pattern frame, and transmit the verification pattern frame and question group to the terminal device.

Description

A Method of Randomly Generating Verification Graphics and Question Groups

technical field

The present invention relates to a method for randomly generating verification graphs and question groups. The main method is to set a graph database in a verification server, so that when the verification server verifies the terminal device, it can randomly select multiple graphs from the graph database. The object graphics are made into a frame verification graphics frame, and the title and quantity of the object graphics in the frame verification graphics frame are used to generate a question group, so that the user of the terminal device can answer the corresponding question after viewing the verification graphics frame. The answer information of the group is sent back to the verification server, so that the terminal device can pass the verification procedure, preventing malicious programs from automatically completing the verification procedure.

Background technique

At present, with the vigorous development of the Internet, various webpages or network platform services, such as social networking sites, forums, online albums, e-mails, blogs or online games, have already penetrated into people's daily life, making it convenient for people to Any place can obtain the required data through the Internet; however, the aforementioned webpages or network platform services are often attacked or abused by malicious users, such as hackers, network scammers, etc., and normal users' right to use Being squeezed out; the above-mentioned malicious users often use robots (Robots) or worms (Worm) to automatically register accounts or post malicious articles on web pages or network platform services, or search, crack and download a large number of automatically hidden files. Sexual information, such as private information, software, and company data, will not only cause network bandwidth to be occupied, but will also infringe on the personal privacy of normal users, and seriously damage the rights of normal users to use web pages or network platform services.

In order to solve the foregoing problems, a verification method for generating verification graphics has emerged; the method is when a user uses a browser of a terminal device to access specific data (such as: reading web pages, publishing information or downloading files) , the verification server will first test the user of the terminal device to determine whether the user of the terminal device is a human (or a robot program or a computer), and only when it is determined that the user of the terminal device is a human being The authority will be granted to the terminal device so that the terminal device can pass the verification procedure. Here is an explanation of the more common verification graphic generation technology as follows:

At present, the commonly used verification graphic generation technology is a fully automatic test for distinguishing between computers and humans (CAPTCHA, Completely Automated Public Turing Test to tell Computers and Humans Apart), please refer to Figure 1, which is mainly generated by a verification server. After the verification figure 11, the verification figure 11 is displayed in a verification webpage 1, and a plurality of distorted characters 111 (such as: peace schlzoid) are arranged on the verification figure 11, and the user must follow the characters 111 seen, through a The terminal device enters the aforementioned character 111 in the space below; if the user enters the correct character 111, the verification server will determine that the user of the terminal device is a human being, and grant permission to the terminal device; otherwise, if the user enters wrong characters 111, the verification server will regenerate another verification graphic 11 and display it on the verification webpage 1, so that the characters 111 will change again until the terminal device passes the verification procedure; In the aforementioned verification procedure, there is human interaction, which reduces the chance of the aforementioned webpage or network service platform being attacked by malicious programs, thereby preventing the aforementioned malicious articles, automatic account registration, or cracking of passwords.

In the process of generating the verification pattern 11, the verification server can increase the complexity of the verification pattern 11 by adding noise points, noise lines, background pictures or image distortion in the verification pattern 11, thereby strengthening the verification program. Although, this can prevent the image recognition function of malicious programs from correctly identifying the content of the verification graphic 11, thereby reducing the success rate of identification of malicious programs, and can resist the operation of some malicious programs, thereby avoiding the occurrence of the aforementioned problems , but at the same time, the readability of the verification pattern 11 will be greatly reduced, so that the user (human user) cannot easily recognize the content of the verification pattern 11, seriously reducing the user's identification accuracy rate, and greatly increasing the possibility of the user's identification error ; Once the image complexity of the verification graphic 11 is so high that even the user cannot recognize it or recognize it incorrectly, the user is very likely to input the wrong verification password due to unclear recognition, so that the verification server must constantly re-execute the verification program, and The user must try and error (try & error) many times, which will not only increase the user's troubles, but also increase the burden on the verification server, which is not welcomed by the aforementioned webpage or network service platform operators and users.

Therefore, how to improve many problems of the traditional verification graphic generation technology, so as to ensure that there is human interaction in the verification program without reducing the correct rate of user identification, and prevent malicious programs from automatically logging in using image recognition technology, that is, An important topic that the present invention intends to discuss here.

Contents of the invention

In view of the many problems disclosed above, the inventor has worked hard for a long time to research and experiment, and finally developed and designed a method of randomly generating verification graphics and question groups of the present invention, hoping to prevent unscrupulous people from using malicious programs to automatically complete the verification process, and reduce the use of The identification difficulty of the user can avoid repeated verification errors, so as to reduce the load on the verification server.

An object of the present invention is to provide a method for randomly generating verification graphics and question groups, which is applied to a verification server, which is connected to at least one terminal device through a network, and is provided with a graphics database and a graphics list , there are multiple object graphics stored in the graphic database, and each object graphic corresponds to an object name. When the verification server verifies each terminal device, it will randomly select a plurality of object graphics from the graphic database, respectively As a verification figure, place the verification figures in a predetermined frame, and register the object names and quantities corresponding to the verification figures in the figure list, and when the registered figures in the figure list When the total number of verification patterns reaches a predetermined number (such as: 5), the verification server will make the predetermined frame together with the verification patterns therein into a frame of verification patterns; The corresponding object names and quantities in the graphics list produce at least one question group (such as: how many tyrannosaurs are there in the frame verification graphics frame?) and a corresponding answer (such as: there are three tyrannosaurs in the frame verification graphics frame) Tyrannosaurus Rex), and the verification graphic frame and question group are sent to the terminal device.

Another object of the present invention is for the user to recognize the object name and quantity corresponding to each verification pattern in the verification pattern frame after viewing the verification pattern frame produced by the method of the present invention, and to view After the question group, input an answer information corresponding to the question group into the terminal device and send it back to the verification server, wait for the verification server to receive the answer information, and compare the answer information with the answer and it is correct Next, the verification server will open the authority to the terminal device, so that the terminal device can pass the verification procedure; since the verification graphic frame is made by randomly selecting multiple object graphics by the verification server, the malicious program cannot completely identify the Verifying the complete content in the graphics frame, including the names and quantities of objects corresponding to all the verification graphics, cannot pass the verification through multiple trial and error and gallery comparisons, so it can prevent malicious programs from automatically completing the verification process.

Another object of the present invention is to provide a verification server that randomly generates verification graphics and question groups. The verification server is connected to at least one terminal device through the network, and includes a graphic database and an answering module. A plurality of object graphics are stored, and each object graphic corresponds to an object name. When the verification server verifies the terminal device, it can randomly select a plurality of object graphics from the graphic database and use them as a verification graphic respectively. placed in a predetermined frame to form a verification graphic frame, the answer module will generate at least one question group and at least one answer according to the object names and quantities corresponding to the verification graphics in the verification graphic frame, the answer and The question group corresponds, and the answering module can transmit the verification graphic frame and the question group to the terminal device; thus, the verification server can strengthen the recognition ability of the verification program by generating a variety of question groups and answers, thereby It is determined whether the user of the terminal device is a human user.

A method for randomly generating verification graphics and question groups in the embodiment of the present invention, by randomly selecting a plurality of object graphics to produce verification graphics and question groups, so that malicious programs cannot completely identify the content of the entire verification graphics, and cannot use text Identify to crack the question group, and then achieve the effect of preventing malicious programs from automatically completing the verification process.

Description of drawings

Figure 1 is a schematic diagram of a traditional verification method;

Fig. 2 is a hardware block diagram of the present invention;

FIG. 3 is a schematic diagram of an object graphic screen of the present invention;

Fig. 4 is a schematic diagram of a predetermined frame picture of the present invention;

Fig. 5 is a schematic diagram of a graphic list of the present invention;

FIG. 6A is a flow chart 1 of a preferred embodiment of the present invention;

FIG. 6B is a second flowchart of a preferred embodiment of the present invention;

Fig. 7 is a schematic diagram of verification graphic framework and question group of the present invention; and

FIG. 8 is a schematic diagram of another verification graphic framework and question group in the present invention.

Figure number:

Authentication Server ................20

End Device ................21

Network ................22

Graph Database ................23

Graphical List ................24

First Object Graphics 231

Second Object Graphics 232

Third Object Graphics 233

First Background Graphics ................234

Secondary Background Graphics ................235

Predetermined framework ................25

Verify Graphics Frame ................26

Question Group... 27

Detailed ways

In order to facilitate the examiner to further understand and understand the purpose, structure and effect of the present invention, the following examples are given together with the drawings, and the detailed description is as follows.

Since the current malicious programs often have image recognition functions, the industry often adopts methods of complicating the verification graphics (such as adding a lot of noise, noise lines, distorting graphics, etc.), but this will make the verification graphics unreadable In view of this, the inventor has finally developed and designed a method for randomly generating verification graphics and question groups of the present invention after long-term hard research and experiments. By randomly selecting multiple The verification graphics and question groups produced by the object graphics make it impossible for malicious programs to fully identify the content of the entire verification graphics, and it is also impossible to use text recognition to decipher the question groups, thus achieving the effect of preventing malicious programs from automatically completing the verification process.

The present invention is a kind of method that randomly produces verification pattern and question group, please refer to shown in Fig. 2, in preferred embodiment of the present invention, this method is applied on a verification server 20, and this verification server 20 communicates with through network 22 At least one terminal device 21 is connected and can verify the terminal device 21. In this embodiment, the network 22 can be an Internet network or a local area network, and the verification server 20 has the functions of a web server and a file server , so that when the terminal device 21 passes the verification procedure of the verification server 20, the verification server 20 allows the terminal device 21 to access data (such as web pages or files) in the verification server 20.

Please refer to Fig. 2 and Fig. 3, in this embodiment, a graphic database 23 and a graphic list 24 are provided in the verification server 20, and a plurality of object graphics and a plurality of background graphics are stored in the graphic database 23, ( In this embodiment, three object graphics 231, 232 and 233 are stored in the graphics database 23, as well as two background graphics, including a first background graphics 234 and a second background graphics 235), each object graphics corresponds to a Object name (in this embodiment, the object names corresponding to the aforementioned three object graphics 231, 232 and 233 are respectively ghosts, mushrooms and slimes), and each background graphic corresponds to a background name respectively (in this implementation In the example, the background names corresponding to the first background graphic 234 and the second background graphic 235 are mountain peaks and trees respectively), the user connects to the network 22 through the browser of the terminal device 21, and can pass the verification server 20 After verification, download a file to the verification server 20 through the terminal device 21, or read a webpage; in this case, the terminal device 21 will send an access request to the verification server 20, and the access request can be a A file download request or a web page read request means that the terminal device 21 intends to download a file or read a web page after passing the verification program of the verification server 20; After getting the request, please refer to Fig. 2, Fig. 3, Fig. 4 and Fig. 6A, Fig. 6B, the verification server 20 will execute the following steps to facilitate subsequent verification procedures:

Step 300: The verification server 20 randomly selects at least one background graphic from the graphic database 23 as the background of a predetermined frame 25. The background graphic 234 is used as the background of the predetermined frame 25, and the background of the predetermined frame 25 can still be composed of a plurality of different background graphics, and is not limited to being composed of a single or a single background graphic;

Step 301: The verification server 20 registers the background name and quantity corresponding to the background of the predetermined frame 25 into the graphics list 24, as shown in FIG. 3, FIG. 4 and FIG. 5, in this embodiment, as the predetermined The background name of the first background graphic 234 of the background of the frame 25 is "Mountain", and its quantity is "2". Therefore, the verification server 20 can promptly determine the background name ("Mountain") corresponding to the background of the predetermined frame 25 and quantity ("2") are registered in the graphic list 24;

Step 302: The verification server 20 randomly selects a plurality of object graphics from the graphic database 23 as a verification graphic respectively. In this embodiment, the verification server 20 selects a total of three object graphics as the verification graphics, including an object A first object graphic 231 whose name is "Ghost", a second object graphic 232 whose name is "Mushroom Monster", and a third object graphic 233 whose name is "Slime";

Step 303: The verification server 20 sequentially places the verification graphics in the predetermined frame 25. In this embodiment, the aforementioned three object graphics 231, 232 and 233 selected by the verification server 20 will be as shown in the figure As shown in 4, they are respectively used as verification patterns by the verification server 20 and placed in the predetermined frame 25, and the verification server 20 can detect whether the verification patterns overlap by sequentially detecting the boundary range of each verification pattern. , if no, it means that each of the verification graphics is placed in the predetermined frame 25 in a non-overlapping position, and enter step 304, if yes, enter step 308;

Step 304: The verification server 20 registers the object names and quantities corresponding to the verification patterns in the pattern list 24, as shown in Figures 3 and 5, in this embodiment, the first object pattern as the verification pattern The object name of 231 is " ghost ", and its quantity is " 1 ", and the object name of the second object figure 232 as verification figure is " mushroom strange ", and its quantity is " 1 ", and as the 3rd object figure of verification figure The object name of 233 is " slime ", and its quantity is " 1 ", therefore, this verification server 20 promptly can as shown in Figure 5, the corresponding object name (" ghost ", " shiitake mushroom monster) of these verification graphics " and "Slime") and quantity (the quantity of the three verification figures is "1") and registered in the figure list 24;

Step 305: The verification server 20 judges whether the sum of the verification patterns registered in the pattern list 24 reaches a predetermined number, if yes, proceed to step 306, if not, proceed to step 302, in this embodiment, the predetermined The number is limited to 3, that is, when it is judged that the sum of the numbers registered in the graphic list 24 has reached 3, the verification server 20 will execute step 306;

Step 306: The verification server 20 makes the predetermined frame 25 and its background, together with the verification graphics therein (ie, the first object graphic 231, the second object graphic 232 and the third object graphic 233), into a frame verification graphic frame 26 ( As shown in Fig. 4 and Fig. 7), in the present embodiment, this verification graphic framework 26 is a GIF (Graphics Interchange Format, Graphics Interchange Format) file, adopts LZW compression algorithm to encode, is a kind of widely used in network The transmitted image format has a small file size and a relatively clear image, which can effectively reduce the time for file transmission on the network;

Step 307: The verification server 20 is based on the object names and quantities corresponding to the verification images (ie, the first object image 231, the second object image 232, and the third object image 233) in the graphic list 24, and the predetermined frame 25 The background name and quantity corresponding to the background in the graphics list 24 generate at least one question group 27 and an answer corresponding to it, and send the verification graphic frame 26 and the question group 27 to the terminal device 21, as shown in the figure 7, in the present embodiment, the question group produced by the verification server 20 is "how many mushroom monsters are there in the figure?" (single choice) (1) 0 (2) 1 (3) 2 (3) )3", and an answer corresponding to the question group produced by the verification server 20 is "(2) 1";

Step 308: Discard overlapping verification patterns, which can reduce the problem that the user of the terminal device 21 may misjudge the number of verification patterns due to overlapping verification patterns when viewing the verification pattern frame 26, and proceed to step 309; and

Step 309: Determine whether the number of discarded overlapping verification patterns reaches a predetermined value (for example: 3 times), if not, go to step 302, if yes, go to step 306.

In this way, as shown in FIG. 2 and FIG. 7, when the user of the terminal device 21 watches the verification graphic frame 26, he can recognize each verification graphic in the verification graphic frame 26 (i.e. the first object graphic 231, The second object graphics 232 and the third object graphics 233) corresponding object names ("ghost", "mushroom monster" and "slime") and quantity (the quantity of the three verification graphics is "1"), and use After seeing this question group 27, the reader can know that the quantity of the verification pattern corresponding to the object name "mushroom monster" in the verification pattern frame 26 is "1", so the user can put the corresponding question group An answer information "(2) 1 only" is input to the terminal device 21 and sent back to the verification server 20 (by mouse click, keyboard input, voice control or other input methods), and the verification server 20 receives the answer information "(2) 1", and if the answer information "(2) 1" is compared with the answer "(2) 1", the verification server 20 releases the authority to the terminal device 21, The terminal device 21 can pass the verification program; through the method of the present invention, since the verification graphic framework 26 is made by randomly selecting three object graphics 231, 232 and 233 through the verification server 20 as verification graphics, malicious programs cannot Completely identify the complete content in the verification graphic frame 26, including the names and quantities of objects corresponding to all verification graphics, etc., and cannot pass the verification through multiple trial and error and gallery comparisons, so malicious programs can be prevented from automatically completing the verification program problem.

As mentioned above, in this embodiment, the verification server 20 has both the functions of a web server and a file server. However, in actual implementation, the verification server 20 can be connected with a web server or a file server, so as to After the terminal device 21 passes the verification program of the verification server 20, the verification server 20 allows the terminal device 21 to access the data on the web server or the file server, and any changes that those skilled in the art can easily imagine, All belong to the technical scope to be protected by the present invention, and shall be stated first.

In addition, the verification method of the present invention can be used to determine whether the user of the terminal device 21 is a human user, and after the terminal device 21 passes the verification procedure of the verification server 20, the terminal device 21 is allowed to access the web server or The data on the file server, however, the verification method of the present invention can still be applied in other fields; Taking online games as an example, please refer to shown in Figure 8, when the terminal device 21 is connected with the verification server 20 through the network 22, And when accessing the built-in game data of the verification server 20 to execute the online game, the verification server 20 can execute the verification method of the present invention at any time or randomly, and the verification graphic frame produced by the verification method of the present invention 26 and question group 27 are sent to this terminal device 21, to this terminal device 21 is verified, and the user of this terminal device 21 must input the answer information corresponding to this question group 27 and return this verification server 20 within a limited time , otherwise after exceeding the limited time, if the verification server 20 does not receive the answer information returned by the terminal device 21, or when the verification server 20 judges that the answer information is different from the comparison result of the answer, the verification server 20 20 will determine that the terminal device 21 is executing the robot program to play the online game, and then close the authority of the terminal device 21 to access the verification server 20 .

In addition, referring to Fig. 2, Fig. 4, Fig. 6A, Fig. 6B and Fig. 7, in this embodiment, when the verification server 20 executes step 303, the verification server 20 can scale each verification Figure size, each this verification figure and the covering area ratio between this predetermined frame 25 is controlled at a predetermined percentage (such as: 50%), avoids each this verification figure too big and mutually overlaps in this predetermined frame 25, to reduce When the user of the terminal device 21 watches the verification graphic frame 26, he may misjudge the number of verification graphics because the verification graphics overlap each other; moreover, when the verification server 20 executes step 303, the verification server 20 It is still possible to perform image processing on each of the verification graphics (such as: scaling, zooming in and out, flipping, mirroring, or adding noise, noise lines, or even distorting graphics, etc.), and then setting the verified graphics after image processing In addition, the verification server 20 can still perform the aforementioned image processing on the predetermined frame 25 and the verification graphics therein when executing step 306, and then make the verification graphic frame 26, so that the verification The server 20 can further enhance the recognition ability of the verification program by generating various verification patterns and the verification pattern frame 26 .

Please refer again to Fig. 2, Fig. 5 and shown in Fig. 7, although, in the present embodiment, this verification server 20 is in this pattern list 24 corresponding object name ("ghost", "mushroom monster" according to these verification patterns) and "Slime") and quantity (the quantity of the three verification graphics is "1"), the question group is "How many mushroom monsters are there in the picture? (Single choice) (1) 0 (2) 1 Only (3) 2 only (3) 3 only", and an answer corresponding to the question group 27 produced by the verification server 20 is "(2) 1", however, the verification server 20 and the generated The question group 27 is not limited to this; in other embodiments of the present invention, the verification server 20 has a built-in answering module (not shown in the figure), and the answering module will be based on the verification graphs in the verification graph frame 26 Corresponding object name and quantity, produce this problem group 27 and answer; Moreover, the problem group 27 that this verification server 20 produces and corresponding answer can be respectively " which one is correct? (single choice) (1) in the figure There are 2 ghosts (2) there is 1 mushroom monster in the picture (3) there are 3 slimes in the picture (4) there are 0 mushroom monsters in the picture" and "(2) there is 1 mushroom monster in the picture", Or "What kind of monster is there in the picture? (Single choice) (1) Mushroom Monster (2) Mummy (3) Vampire (4) Werewolf" and "(1) Mushroom Monster", in addition, corresponding to the question group The number of answers is not limited to one, and the verification server 20 can still produce a set of questions, such as "Which one is correct?" (multiple choice) (1) There is 1 ghost in the figure (2) There is 1 mushroom monster in the figure (3 ) There are 3 slimes in the picture (4) There are 0 mushroom monsters in the picture", and can generate multiple answers corresponding to this question group, including "(1) There is 1 ghost in the picture" and (2) "There is only one mushroom monster in the picture", moreover, the answering module can generate at least one question group 27 and a corresponding answer according to the object names and quantities corresponding to the verification figures in the figure list 24 In addition, it is also possible to generate question groups 27 and answers according to the background names and quantities corresponding to the background of the predetermined frame 25 in the graphic list 24; for example, the question groups 27 and corresponding answers produced by the answering module It can be "Which one is correct?" (Single choice) (1) The background in the picture is a mountain peak (2) There are 2 mountain peaks in the background of the picture (3) There is a tree in the background of the picture (4) There are 2 trees in the background of the picture tree" and "(2) There are 2 peaks in the background in the picture", or "How many peaks are there in the background in the picture? (Single choice) (1) 1 (2) 2 (3) 3 (3) 4 Blocks" and "(2) 2 blocks"; in this way, the verification server 20 can make it more difficult for malicious programs to identify the complete content in the verification graphic frame 26 by generating a variety of question groups and answers.

The vocabulary used in the embodiments of the present invention is only used for description, and should not be considered as a limitation of the present invention. In addition, although in the embodiments of the present invention and the drawings, only simple component names and connection relationships are listed, it is only for convenience Description, so that the general public or practitioners in related fields can understand the essence and gist of the disclosure of the present invention, and not limited to the above-mentioned hardware system architecture. In actual implementation, those skilled in the art and personnel should be able to grasp the essence of the present invention After the technical features, other structures, devices, systems or replacement method steps are used to achieve the purpose of the present invention. Therefore, the scope of rights claimed by the present invention is not limited thereto. The disclosed technical content and easily conceivable equivalent changes shall all fall within the scope of protection of the present invention.

Claims (10)

1. A method for randomly generating verification graphics and question groups, characterized in that it is applied to a verification server, and the verification server is connected to at least one terminal device through a network, and a graphic database is provided in it, and the graphic database A plurality of object graphics are stored in the interior, and each object graphic corresponds to an object name, and the verification server can perform the following steps to verify the terminal device: Randomly selecting a plurality of object graphics from the graphics database as a verification graphics, and sequentially placing the verification graphics in a predetermined frame; Sequentially detecting the boundary range of each of the verification graphics, and judging whether each of the verification graphics overlaps with other verification graphics; When it is judged that each of the verification patterns does not overlap with other verification patterns, making the predetermined frame together with the verification patterns therein into a frame of verification patterns; and Generate at least one question set and at least one answer corresponding to it according to the object name and quantity of the verification pattern in the verification pattern frame, and transmit the verification pattern frame and the question set to the terminal device. 2. The method according to claim 1, wherein a graphic list is still provided in the verification server, and the method further comprises: registering the object names and quantities of the verification figures in the verification figure frame into the figure list; judging whether the sum of the numbers of verification patterns registered in the pattern list reaches a predetermined number; and When it is judged that the total number of verification patterns registered in the pattern list has reached the predetermined number, the question set and the answer are generated according to the corresponding object names and quantities in the pattern list. 3. The method according to claim 2, wherein when the verification server receives an answer message from the terminal device, it will compare whether the answer message is the same as the answer, and if so, Then it is judged that the terminal device has passed the verification; otherwise, it is judged that the terminal device has not passed the verification. 4. The method according to claim 3, wherein when the verification server places the verification graph in the predetermined frame, it can scale each of the verification graphs in equal proportions, so that each of the verification graphs The coverage area ratio of the graphics in the predetermined frame does not exceed a predetermined percentage. 5. The method according to claim 4, wherein a plurality of background graphics are still stored in the graphics database, and before the verification server places the verification graphics in the predetermined frame, it will At least one background graphic is randomly selected from the graphic database as the background of the predetermined frame. 6. The method according to claim 5, wherein, when it is judged that each of the verification patterns overlaps, the overlapped verification patterns are discarded, and it is judged whether the number of times of discarding reaches a predetermined value, and when it is judged that the number of times of discarding If it has reached the predetermined value, make the predetermined frame together with the verification graph therein into the verification graph frame, or in the case of judging that the number of times of discarding has not reached the predetermined value, from the graph database Randomly select multiple object graphics again. 7. A method for randomly generating verification graphics and question groups, characterized in that it is applied to a verification server, the verification server is connected to at least one terminal device through a network, and a graphic database is provided in it, and the graphic database A plurality of object graphics and a plurality of background graphics are stored, each object graphics corresponds to an object name, and each background graphics corresponds to a background name, the verification server can perform the following steps to verify the terminal The device is authenticated: Randomly selecting at least one background graphic from the graphic database as the background of a predetermined frame; Randomly selecting a plurality of object graphics from the graphics database as a verification graphics, and sequentially placing the verification graphics in the predetermined frame; Sequentially detecting the boundary range of each of the verification graphics, and judging whether each of the verification graphics overlaps with other verification graphics; When it is judged that each of the verification patterns does not overlap with other verification patterns, making the predetermined frame together with the verification patterns therein into a frame of verification patterns; and According to the object name and quantity of the verification figure in the verification figure frame, and the background name and quantity of the background of the verification figure frame, at least one question group and at least one answer corresponding to it are generated, and the described The verification graphic frame and question group are sent to the terminal device. 8. The method according to claim 7, wherein a graphic list is further provided in the verification server, and the method further comprises: Register the background name and quantity of the background of the verification graphic frame into the graphic list; Registering the object names and quantities of the verification patterns in the verification pattern frame into the pattern list; judging whether the sum of the numbers of the verification patterns registered in the pattern list reaches a predetermined number; and When it is judged that the sum of the number of verification graphics registered in the graphics list has reached the predetermined number, the question set and the answer are generated according to the corresponding object name, background name and quantity in the graphics list. 9. The method according to claim 8, characterized in that, when the verification server places the verification figures in the predetermined frame, each of the verification figures can be proportionally scaled, so that each of the verification figures The coverage area ratio of the graphics in the predetermined frame does not exceed a predetermined percentage. 10. The method according to claim 9, wherein, when it is judged that each of the verification patterns overlaps, the overlapped verification patterns are discarded, and it is judged whether the number of times of discarding reaches a predetermined value, and when it is judged that the number of times of discarding If it has reached the predetermined value, make the predetermined frame together with the verification graph therein into the verification graph frame, or in the case of judging that the number of times of discarding has not reached the predetermined value, from the graph database Randomly select multiple object graphics again.

Images