易语言验证码识别技术带源码(国外英文资料).doc

易语言验证码识别技术带源码(国外英文资料) The emulation is the first software to expose the most effective captchas. The use of simulated elves has produced a large number of free, commercial mass software that can be successfully identified for many of the complex bittorrents captchas. But the captcha still requires a lot of skill and patience. Keep that in mind. Captchas are not suited for fickle people. Captcha recognition is a special technique that any open captcha code can quickly invalidate. Because the web site will change the captcha quickly after the code is exposed. So Im just going to show you how it works. In this discussion, the technique of captcha is purely based on the purpose of the research. The technology is also being published to make more sites more effective. No one can use the captchas introduced here to spam spam. This paper introduces the authentication code recognition which is applicable to the more complex image captcha and the method used by most websites. Some site verification code is very simple, such as in a web page showing captcha characters directly rather than the image, or the file name of the picture is the character on the verification code directly. Or have other rules to follow, or have other obvious loopholes can use (for example by rewriting the access authentication code page source code to make verification code does not refresh). This type of authentication is extremely simple, as long as youre comfortable with the functions of the web library, the element library, and you dont need to use the following methods. Download the captcha sample Open the c: \ test folder, select view thumbnail, Then run the following LAScript script repeatedly, and once every time you run, look at the image generated automatically by c: \ test, and change the character in the image to the file name. For example, if the image shows 5, change the filename to 5.jpg. If change more complex authentication code, each character can be multi-purpose a few samples, the