http://blog.joycode.com/peon/articles/98282.aspx
This is my small text. I wrote in 2003. Now the anti-theft chain technology has developed very much. There is a lot of security chain plug-ins. Everyone can choose one, I recommend my own HelixApp streaming anti-theft chain Download plugin, have a free version of the free version, suitable for WMS / HELIX / IIS various servers
Preventing the chain is all the big problems of all streaming movie websites and download picture music website, the younger brother tries to summarize: 1. For a lot of free streaming service website, it is dependent on advertising, the chain is simply, but the chain is almost the same, but, We can join ads in the video, so others can make publicity :) REAL and WinMedia have a good advertising program - this is a stroke of the bottom of the suction 2. Use the pop-up IE window without menus, forbidden mouse Right-click, avoid others to see HTML source code - this can indeed becoming a lot of people, but using OE, offline browser or QQ / myie, multi-window browser, etc., can easily crack the encryption of this way, this can only As a helper for other methods 3. Using the JavaScript / VBS operation to get the video URL, then use the tool to encode the Script, which is difficult to understand - this crack is indeed difficult to get better than the above, but the client's encryption is always reliable Others can't see the original URL just if he is willing to spend this energy. 4. Using custom ActiveX control package Media / Real play control, encrypts the incoming URL, so that you can't see the URL of the HTML code. . - ActiveX can be used on the Internet requires a signature and license, requiring NK's silver, and this way can flee the mental eyes of the Sniffer tool, especially the tool to join the support of Sniffer (such as hidownload) above. It is to prevent customers from seeing the URL of the streaming media. Now we have changed a thinking, let the stealing chain have no much use: 5. Use the authentication: Watch the program requires username and password, regular replacement user name and password, in the forum Publishing - this does have more troublesome websites, but it also has an impact on the normal viewing users, and users and passwords are difficult to manage - supplement: Real can put the authentication information in the database, so pass secondary development, you can Make up the shortcomings of the above 6. Use the player binding, now the REAL and WINMEDIA9 players have the only GUID worldwide, through the secondary programming of the server, the information of legal users (through secondary development, so this record process Can be completed with the assistance of your website), only the player that has been recorded can watch the program, this way is more suitable for billing - but this way is also very large, and it takes secondary development
7. Regular changes to file names or file paths, or service ports, this will bring trouble to media file management (if it is more troublesome, it is more troublesome), but still use, not suitable for large sites below the way is comparison Mature and practical methods: 8. Using dynamic URL: URL is constantly changing, each on-demand URL is different, customers can only get URLs from the web, use one or one time, so that the curtain is bright Repairing the newness? Br> Changes, either change with time, or once, even if Copy has this URL, change the scene (machine, time, IP, etc.), it is also unable to play - this secondary development of the server side: Real / WinMedia provides corresponding SDK9. Using cookies, this can prevent piracy and downloads, you can use cookie's limitations, streaming server can only be down on the same top-level domain name with the web: 8. Use cookie, this can prevent theft And download, you can use the Localization of Cookie, the streaming server can only be at a top domain with the web.
Www.helixapp.com's anti-theft chain defense download software mainly uses these two methods
At last:
9.DRM This doesn't have to say more. The final solution WinMediadRM is free (requires company and personal electronic certificate), and Real also adjusts the strategy, recently price cut, as if the partner is free but Tao high , The magic is one feet, everyone must have a better way to crack and prevent breakfast, welcome to discuss this topic here to give a link, you can see the downloaded means:) http://www.pconline. com.cn/pcedu/soft/wl/ftp/0312/26544.html
Then recommend an anti-theft chain website www.helixapp.com with free version
