CN101178813B - Method and apparatus for generating photograph identifying code - Google Patents
Method and apparatus for generating photograph identifying code Download PDFInfo
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- CN101178813B CN101178813B CN2007101610391A CN200710161039A CN101178813B CN 101178813 B CN101178813 B CN 101178813B CN 2007101610391 A CN2007101610391 A CN 2007101610391A CN 200710161039 A CN200710161039 A CN 200710161039A CN 101178813 B CN101178813 B CN 101178813B
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Abstract
The invention embodiment discloses an image checking-code generating method which includes taking the static image with checking-code text information as the first animation frame, the chosen background image as the second animation frame and displaying the first animation frame and the second animation frame alternatively; using the alternatively displayed first animation frame and the second animation frame to generate a dynamic image, which can be taken as image checking-code. The invention also discloses an image checking-code generating device. The application of the invention can improve the anti-decryption of the image checking-code.
Description
Technical field
The present invention relates to computer realm, particularly a kind of generation method and apparatus of picture validation code.
Background technology
Along with the development of network service, some can utilize " robot program " to use the network free resource in a large number, and server usefulness is greatly reduced, and for example mass-send spam etc.; Someone utilizes " robot program " constantly to send services request and responds, and carries out " saturation attack " to reach the purpose that makes the service paralysis; Also the someone utilizes Brute Force supervisor means to carry out virtual assets theft etc.Thereby picture validation code is that program or human identity are assert instrument as differentiating the network service user, more and more is widely used.
Picture validation code is the picture that a width of cloth contains character, and the character in this picture guaranteeing under the identifiable prerequisite of human vision usually, is twisted or adds some noises, to increase the difficulty of automatic program identification.When utilizing picture validation code to carry out the identity identification, system can require the user to answer to have shown which literal or character in this pictures, when system is correctly answered, assert that the user is human, and when repeatedly obtaining wrong answer, then system thinks that the user is a program, and does not carry out subsequent operation.
Present picture validation code, by adopting the static images form, picture such as jpg, png form, in the process that generates this picture validation code, background and character merge fully, and only increase the Character segmentation difficulty by adding noise in character picture background of living in or simple artificial texture.Picture validation code first exemplary plot of Fig. 1 for using in the prior art.As shown in Figure 1, (a) and (b) all twist the character in the picture with the picture validation code (c).Picture validation code second exemplary plot of Fig. 2 for using in the prior art.Picture validation code shown in Figure 2 has all carried out noise or texture processing to the background in the picture.
And along with the development of artificial intelligence and image understanding technology, machine is more and more stronger to the recognition capability of character in the image.For the picture validation code generation method of present this generation static images form, malicious user can be easy to pull the whole identifying code picture that contains alphabet by machine program, crack means by Character segmentation etc. then, from ground unrest, extract alphabet, thereby can crack out picture validation code.
Thereby, generating the method for picture validation code at present, the risk that is cracked is bigger, and security is not high.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of method and apparatus that generates picture validation code, can improve the anti-ability of cracking of picture validation code.
For achieving the above object, the technical scheme of the embodiment of the invention specifically is achieved in that
A kind of generation method of picture validation code, this method comprises: the static images that will comprise the identifying code Word message is as first animation frame, with selected background picture as second animation frame, described first animation frame of Alternation Display and second animation frame; Described selected background picture is: blank background picture or with described static images in the different background picture of identifying code Word message color;
Utilize first animation frame of Alternation Display and second animation frame to generate dynamic picture, with described dynamic picture as picture validation code.
A kind of generating apparatus of picture validation code, this device comprises:
Alternation Display module, the static images that is used for comprising the identifying code Word message be as first animation frame, with selected background picture as second animation frame, described first animation frame of Alternation Display and second animation frame; Described selected background picture is: blank background picture or with described static images in the different background picture of identifying code Word message color;
The picture validation code generation module is used to utilize first animation frame of described Alternation Display module Alternation Display and second animation frame to generate dynamic picture, with described dynamic picture as picture validation code.
As seen from the above technical solution, the method and apparatus that the embodiment of the invention provides, the static images and the background picture that comprise the identifying code Word message by Alternation Display, generate dynamic picture validation code, thereby reduced machine and pulled the probability that comprises complete identifying code Word message in the picture, thereby can increase the difficulty that the identifying code Word message is split from picture, thereby can effectively destroy the integrality that pulls character in the picture, effectively improved the anti-ability of cracking of picture validation code.
Description of drawings
Picture validation code first exemplary plot of Fig. 1 for using in the prior art;
Picture validation code second exemplary plot of Fig. 2 for using in the prior art;
Fig. 3 is the method flow exemplary plot of the generation picture validation code of the present invention's employing;
Fig. 4 is the principle schematic that generates picture validation code in a preferred embodiment of the present invention;
Fig. 5 is the method flow synoptic diagram that generates picture validation code among Fig. 4;
Fig. 6 is the apparatus structure synoptic diagram of the generation picture validation code that adopts among the present invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
The method that provides in the embodiment of the invention is: the static images that will comprise the identifying code Word message is as first animation frame, with selected background picture as second animation frame, Alternation Display first animation frame and second animation frame; Utilize first animation frame of Alternation Display and second animation frame to generate dynamic picture, with dynamic picture as picture validation code.Fig. 3 is the method flow exemplary plot of the generation picture validation code of the present invention's employing, referring to Fig. 3, specifically may further comprise the steps:
Step 301: the static images that will comprise the identifying code Word message is as first animation frame, with selected background picture as second animation frame, Alternation Display first animation frame and second animation frame.
In this step, the identifying code Word message referred in when checking, and the information that requires the user to recognize can be following any one or a plurality of combination: character, numeral, characteristic symbol etc.Static images can be the picture of forms such as jpg, bmp or png.
Alternation Display first animation frame and second animation frame comprise in this step: show first animation frame in the identifying code Word message that obtains shows duration, in showing duration, the background of obtaining shows second animation frame, when not satisfying the condition of the termination demonstration that sets in advance, re-execute the step that shows first animation frame.Here, the termination display condition that sets in advance many, such as, when total duration of Alternation Display reaches the demonstration duration maximal value that sets in advance, terminate alternative shows that perhaps when the number of times of Alternation Display reached the number of times maximal value that sets in advance, terminate alternative showed.
In this step,, then in showing duration, whole backgrounds shows this background picture if selected background picture is one, and when selected background picture when being a plurality of, the then background picture that Alternation Display is selected in background shows duration.Such as, selected background picture is I
1And I
2, then can show that the duration first half shows I in background
1, latter half shows I
2
In this step, the identifying code Word message that obtains shows that duration and background show that the method for duration can set in advance or generate at random.Be specially: the time that sets in advance is shown duration or shows the duration upper and lower limit according to the Word message that sets in advance as the identifying code Word message that obtains, showing that more than or equal to described Word message the duration lower limit is to showing smaller or equal to described Word message in the scope of the duration upper limit, produce a random number, show duration as the described identifying code Word message that obtains.The time that sets in advance is shown duration or shows the duration bound according to the background that sets in advance as the background that obtains, showing that more than or equal to described background the duration lower limit is to showing smaller or equal to described background in the scope of the duration upper limit, produce a random number, show duration as the described background that obtains.
Step 302: utilize first animation frame of Alternation Display and second animation frame to generate dynamic picture, with the dynamic picture that generates as picture validation code.
This step can adopt the method that generates dynamic picture in the prior art, promptly by continuous playing animation frame, just first animation frame of Alternation Display and second animation frame here convert a series of animation frame that produce dynamic effect to support dynamic format file, such as the gif file.
Fig. 4 is the principle schematic that generates picture validation code in a preferred embodiment of the present invention.As shown in Figure 4, at first after the character string of input identifying code to be generated, come the displaying ratio of control string and background according to the demonstration duration of the identifying code Word message that generates at random and the demonstration duration of background.Then, according to the blank background picture of input, generate the gif picture file that a character frame and blank background frame alternate cycles show.At last, output is based on the dynamic picture identifying code of gif form.
Fig. 5 generates the method flow synoptic diagram of picture validation code for Fig. 4.
Step 501: produce the demonstration duration of identifying code character string and the demonstration duration of background at random.
In the present embodiment, suppose to set in advance the interval { t of being of demonstration duration
1, t
2.Adopt random algorithm to generate 2 random numbers, be expressed as the demonstration duration t of identifying code character string, the demonstration duration t ' of background.
Step 502: according to the demonstration duration of identifying code character string and the demonstration duration of background, Alternation Display comprises the static images and the background picture of identifying code character string.
In the present embodiment, with the static images of identifying code character string and background picture all as animation frame, in the t duration, all show the picture I that comprises the identifying code Word message, whole background picture I ' in t ' duration, the condition that the present embodiment supposition stops showing is for showing that the duration maximal value is 10 seconds, then circulation shows two width of cloth pictures,, stops showing during more than or equal to 10 seconds up to total duration of Alternation Display.
Step 503: utilize the static images and the background picture of the identifying code character string of Alternation Display, generate the dynamic picture of supporting dynamic format.
In the present embodiment, adopt prior art, the static images and the background picture of the identifying code character string of Alternation Display be converted to a gif file of supporting dynamic format, with this gif file as picture validation code.When needs are verified, execution in step 504.
Step 504: play this dynamic picture as picture validation code.(503 and 504 repeat among Fig. 5, please revise Fig. 5)
The selected background picture of present embodiment can be blank background picture, also can be and the bigger picture of identifying code Word message difference, such as, the background picture different with the color of identifying code Word message.
The demonstration duration of the identifying code character string of using in the present embodiment and the demonstration duration of background can adopt different upper and lower limits, such as, can set on the demonstration duration of identifying code character string and be limited to 11 seconds, under be limited to 9 seconds, and be limited to 3 seconds on the demonstration duration of background, under be limited to 2 seconds, like this, can so that the identifying code character string display time long.
The method that present embodiment generates picture validation code can realize the dynamic effect of identifying code character string and background Alternation Display, thereby effectively destroy the integrality of character in the picture, has increased and has cracked difficulty.In addition, present embodiment generates dynamic effect by picked at random identifying code character string display time and background method of displaying time, has increased the cost and the cost that adopt the violence method to crack.
Fig. 6 is the apparatus structure synoptic diagram of the generation picture validation code that adopts in the embodiment of the invention.Referring to Fig. 6, this device comprises:
Picture validation code generation module 620 utilizes first animation frame of Alternation Display module Alternation Display and second animation frame to generate dynamic picture, with dynamic picture as picture validation code.
In sum, present embodiment generates the method and apparatus of picture validation code, picture by will comprising the identifying code Word message and background picture are as animation frame, and then by these two kinds of pictures of Alternation Display, thereby generated the dynamic picture that comprises the identifying code Word message, this dynamic picture as picture validation code, can effectively be destroyed character integrity in the picture, increased and cracked difficulty.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the generation method of a picture validation code, it is characterized in that, this method comprises: the static images that will comprise the identifying code Word message is as first animation frame, with selected background picture as second animation frame, described first animation frame of Alternation Display and second animation frame; Described selected background picture is: blank background picture or with described static images in the different background picture of identifying code Word message color;
Utilize first animation frame of Alternation Display and second animation frame to generate dynamic picture, with described dynamic picture as picture validation code.
2. method according to claim 1, it is characterized in that, described first animation frame of described Alternation Display and second animation frame comprise: show described first animation frame in the identifying code Word message that obtains shows duration, in showing duration, the background of obtaining shows described second animation frame, when not satisfying the condition of the termination demonstration that sets in advance, re-execute the step of described first animation frame of described demonstration.
3. method according to claim 2 is characterized in that, obtains described identifying code Word message and shows that duration comprises:
The time that sets in advance is shown duration as the identifying code Word message that obtains, perhaps show the duration upper and lower limit according to the Word message that sets in advance, showing that more than or equal to described Word message the duration lower limit is to showing smaller or equal to described Word message in the scope of the duration upper limit, produce a random number, show duration as the described identifying code Word message that obtains.
4. method according to claim 2 is characterized in that, obtains described background and shows that duration comprises:
The time that sets in advance is shown duration as the background that obtains, perhaps show the duration bound according to the background that sets in advance, showing that more than or equal to described background the duration lower limit is to showing smaller or equal to described background in the scope of the duration upper limit, produce a random number, show duration as the described background that obtains.
5. method according to claim 2 is characterized in that, the described termination display condition that sets in advance comprises: total duration of Alternation Display reaches the demonstration duration maximal value that sets in advance, and perhaps the number of times of Alternation Display reaches the number of times maximal value that sets in advance.
6. method according to claim 2, it is characterized in that, when described selected background picture is a plurality of, describedly in showing duration, the background obtained shows that described second animation frame comprises: the described selected background picture of Alternation Display in described background shows duration.
7. according to claim 1,2,3,4,5 or 6 described methods, it is characterized in that described background picture comprises: the picture of jpg, bmp or png form.
8. the generating apparatus of a picture validation code is characterized in that, this device comprises:
Alternation Display module, the static images that is used for comprising the identifying code Word message be as first animation frame, with selected background picture as second animation frame, described first animation frame of Alternation Display and second animation frame; Described selected background picture is: blank background picture or with described static images in the different background picture of identifying code Word message color;
The picture validation code generation module is used to utilize first animation frame of described Alternation Display module Alternation Display and second animation frame to generate dynamic picture, with described dynamic picture as picture validation code.
9. device according to claim 8 is characterized in that, described Alternation Display module comprises:
First display unit be used for showing described first animation frame in the identifying code Word message that obtains shows duration, and described second display unit of triggering shows described second animation frame after demonstration is finished;
Second display unit is used for triggering according to described first module, shows described second animation frame in the background of obtaining shows duration, when not satisfying the condition of the termination demonstration that sets in advance, triggers described first display unit and shows described first animation frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101610391A CN101178813B (en) | 2007-12-19 | 2007-12-19 | Method and apparatus for generating photograph identifying code |
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|---|---|---|---|
| CN2007101610391A CN101178813B (en) | 2007-12-19 | 2007-12-19 | Method and apparatus for generating photograph identifying code |
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| CN101178813A CN101178813A (en) | 2008-05-14 |
| CN101178813B true CN101178813B (en) | 2010-04-14 |
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| CN100573591C (en) * | 2008-08-12 | 2009-12-23 | 腾讯科技（深圳）有限公司 | A kind of generation method and apparatus of picture validation code |
| EP2455883B1 (en) * | 2010-03-29 | 2015-03-11 | Rakuten, Inc. | Authentication server, method and program |
| EP2715587B1 (en) * | 2011-05-26 | 2019-01-09 | Thomson Licensing | More secure image-based "captcha" technique |
| CN102890761B (en) * | 2011-08-24 | 2015-06-10 | 北京文海思创科技有限公司 | Method for verifying through graphical verification code |
| CN103164700A (en) * | 2011-12-15 | 2013-06-19 | 英顺源（上海）科技有限公司 | System for providing dynamic images to carry out verification and method thereof |
| CN102663672B (en) * | 2012-05-03 | 2013-12-04 | 杭州朗和科技有限公司 | Picture verification code generation method and device |
| CN102710635A (en) * | 2012-05-30 | 2012-10-03 | 无锡德思普科技有限公司 | Verification method based on cyclic steady and dynamic-state verification code pictures |
| CN103065341A (en) * | 2012-12-19 | 2013-04-24 | 福建天晴数码有限公司 | Method for turning figure picture into verification code picture based on black color and white color |
| CN104113682B (en) * | 2013-04-22 | 2018-08-31 | 联想(北京)有限公司 | A kind of image acquiring method and electronic equipment |
| CN103400107B (en) * | 2013-07-05 | 2017-04-19 | 百度在线网络技术（北京）有限公司 | Method and device for generating dynamic verification code picture, and verification method and device |
| CN104298912B (en) * | 2013-07-15 | 2018-12-11 | 深圳市腾讯计算机系统有限公司 | Anti- identifying code implementation method, generation method and the device cracked |
| CN104346557A (en) * | 2013-08-06 | 2015-02-11 | 深圳市腾讯计算机系统有限公司 | Verification code generation method and device and verification code display control method and device |
| CN103532979A (en) * | 2013-10-30 | 2014-01-22 | 蓝盾信息安全技术股份有限公司 | Method for generating and verifying multi-conversation verification codes under CGI (common gateway interface) for web |
| CN105323224B (en) * | 2014-07-21 | 2019-09-17 | 腾讯科技（深圳）有限公司 | Verify exchange method and relevant apparatus and communication system |
| CN105701391B (en) * | 2014-11-27 | 2018-12-07 | 阿里巴巴集团控股有限公司 | Dynamic verification code Picture Generation Method and device |
| CN104700022B (en) * | 2015-03-31 | 2018-08-07 | 北京奇艺世纪科技有限公司 | A kind of dynamic authentication code generating method and device |
| CN106161023B (en) * | 2015-04-02 | 2019-11-05 | 深圳市腾讯计算机系统有限公司 | Auth response method and system based on picture validation code |
| CN107463830A (en) * | 2017-07-07 | 2017-12-12 | 北京人亩田网络科技有限公司 | The generation method and device and verification method and device of identifying code |
| JP6958096B2 (en) * | 2017-08-10 | 2021-11-02 | 富士フイルムビジネスイノベーション株式会社 | Information processing equipment and programs |
| US10592654B2 (en) | 2017-09-21 | 2020-03-17 | International Business Machines Corporation | Access control to computer resource |
| CN108182355B (en) * | 2017-11-21 | 2021-10-22 | 深圳市口袋网络科技有限公司 | Login verification method, server and computer readable storage medium |
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Effective date of registration: 20151230 Address after: The South Road in Guangdong province Shenzhen city Fiyta building 518057 floor 5-10 Nanshan District high tech Zone Patentee after: Shenzhen Tencent Computer System Co., Ltd. Address before: Shenzhen Futian District City, Guangdong province 518044 Zhenxing Road, SEG Science Park 2 East Room 403 Patentee before: Tencent Technology (Shenzhen) Co., Ltd. |