Technical Application of network encryption and decryption

Comments: In the age of information and networking, computers are playing an increasingly important role in our work and life. More and more users use computers to obtain and process information, and store their most important information in the form of data files. Some people describe that the Internet is like the most free world. Here, you can use your imagination to create an age of information and networking, computers are playing an increasingly important role in our work and life. More and more users use computers to obtain and process information, and store their most important information in the form of data files. Some people describe that the Internet is like the most free world. Here you can use your imagination to create a small world of your own, but if we lack the minimum security means in our network, where can we start with freedom? Therefore, encryption is widely recognized and adopted by the industry as an important means of network system security. What should I do if I forget my password? Of course, we can solve the problem by removing the information password. Therefore, it is very important for users to master network encryption and decryption technologies. I will introduce some network encryption and decryption methods to my friends, I hope this will help you. 1. For Windows System File Folder encryption, everyone will have some privacy that is unwilling to be known, such as work plans and personal information. To protect these secrets, encryption software has become the preferred choice for many people. However, the popular encryption software on the Internet basically encrypts files or folders directly. Therefore, it takes a lot of time to process large files or many files, in addition, to use these files, you also need to decrypt them. After using these files, you need to re-encrypt them, which is very troublesome. Is there any tool that can be encrypted and used as easily as common files? Of course, you can use the built-in functions of Windows to meet your requirements. 1. file encryption (1) enter the folder to be encrypted in Windows 9X/Me/2000, right-click the folder, and select "Custom folder" in the pop-up menu ". Next, click "Next" in the Wizard, select "Custom", select "select or edit Html template for this folder", and select "standard" in the template type ", select "Edit template" and click "Next". (In Win98, select "create or edit HTML document" in the Wizard ). A text file named "Folder" is opened. Find the <script language = "JavaScript"> Field in the file and enter the following content below it (the comment content is in the Chinese Double quotation marks and does not need to be entered ): var pass = prompt ("Please Enter the Password"); "Enter the prompt language after entering the folder in brackets after the prompt command, which can be Chinese. The semicolon can be omitted. This line must be a separate line. "if (pass! = "123") "password is 123, you can also set it to another password" {window. location = "c:"} "if the password is incorrect, you can enter disk c or set it to another partition, but it can only be the root directory". Save the file and exit the File Settings. After the folder. htt file is created, you can directly find the folder. htt file in the folder after you need to change the settings next time. Then, open it in notepad and modify it. After saving the file, the setting will take effect. If it is in the WinMe operating system, there is no <script language = "JavaScript"> field. The field we are looking for is <script>. Put the above content after this field. (2) In Windows XP, the "user-defined folder" in Windows XP does not have the corresponding options to edit the template, and the folder. htt file in it is invalid to edit it directly. At this time, we can "save the country by curve": first create an encrypted folder in Windows2000 in the above way, and then copy the folder to Windows XP as a whole. With the above method, we can encrypt the private folder. Although relatively simple, it can also play a certain role, especially for those who have no intention of spying on others' privacy. 2. File decryption: here we will introduce how to decrypt these folders, especially when you forget your password after encryption. (1) cancel all passwords (for Windows 98/Me systems) and enter an unencrypted folder. Click the "View" command on the menu bar to cancel the "view by web page" option. Click "View" again, select "Folder Options", and select the "View" tab in the pop-up dialog box. Click "similar to the current folder" and click "OK" to cancel the encryption of all folders on the local machine. (2) cleverly display the password. method 1 will cancel the encryption properties of all encrypted folders, and cannot decrypt a single folder. It is not applicable to Win2000 and XP systems. In fact, there is a common method to crack this type of encrypted folder in 98 or 2000/XP systems. We can even enter the encrypted folder as we enter our own folder: assume that the encrypted folder is d: \ lj, enter d: \ lj \ folder settings \ folder in the address bar. htt, you can open the change settings file (folder. htt ). We only need to find several lines of encrypted code in the modified file, and the password will be displayed in front of us without reservation. Write down the password, and then open the encrypted folder so that we can easily access it! 2. It is a very hard job to encrypt your own web pages. When you see that some people just need to copy and paste them, how do you feel if you even add your work to his own copyright? In this way, let some people who get nothing and continue to steal the fruits of your work? Is there a way to stop them? In fact, it is impossible to prevent such behavior to the full extent, but we can block such behavior to the maximum extent by setting many obstacles so that they can turn away. Here, I recommend an encryption method. JavaScript is a new Web description language developed by Sun and Netscape, this language can be embedded into HTML files, allowing you to design interactive web content. The simplest result of using javascript encryption is that the browser cannot right-click the browser, when you right-click an image to save or copy text, a warning window or favorites will pop up. (1) In the pop-up window, right-click the block and place the following code in the