The company's computer encrypts the copied files. Many people usually encrypt private files at work, but some people need to copy them to another place after encryption, and the company computer encrypts the copied files.
The company computer encrypted the copied file 1. 1. Encrypt files or folders.
Step 1: Open WINDOWS Explorer.
Step 2: Right-click the file or folder you want to encrypt, and then click Properties.
Step 3: On the General tab, click Advanced. Select the Encrypt content to protect data check box.
In the encryption process, we should also pay attention to the following five points:
1. To open WINDOWS Explorer, click Start → Programs → Accessories, and then click WINDOWS Explorer.
2. Only files and folders on NTFS partition volumes can be encrypted, and files and folders on FAT partition volumes are invalid.
3. Compressed files or folders can also be encrypted. If you want to encrypt a compressed file or folder, the file or folder will be decompressed.
4. Files marked with the "System" attribute cannot be encrypted, nor can files located in the SYSTEMROOT directory structure be encrypted.
5. When encrypting a folder, the system will ask whether to encrypt its subfolders at the same time. If "Yes" is selected, its subfolder will also be encrypted, and all files and subfolders added to this folder in the future will be automatically encrypted when added.
Second, decrypt the file or folder.
Step 1: Open WINDOWS Explorer.
Step 2: Right-click the encrypted file or folder, and then click Properties.
Step 3: On the General tab, click Advanced.
Step 4: Clear the Encrypt content to protect data check box.
Similarly, students should pay attention to the following issues when using decryption:
1. To open WINDOWS Explorer, click Start → Programs → Accessories, and then click WINDOWS Explorer.
2. When decrypting a folder, you will be asked whether to decrypt all files and subfolders in the folder at the same time. If you choose to decrypt only the folder, the encrypted files and subfolders in the folder to be decrypted will remain encrypted. However, new files and folders created in decrypted folders are not automatically encrypted.
The above is how to use file encryption and decryption! In the process of use, students may encounter the following problems, which are explained as follows:
1, advanced buttons cannot be used.
Reason: Encrypted File System (EFS) can only handle files and folders on NTFS file system volumes. If the file or folder you are trying to encrypt is on a FAT or FAT32 volume, the Advanced button does not appear in the properties of the file or folder.
Solution:
Use the conversion tool to convert a volume to an NTFS volume.
Open a command prompt.
Type: CONVERT[ drive ]/FS:NTFS.
(Drive is the drive letter of the target drive)
2. When the encrypted file is opened, the message "Access Denied" will be displayed.
Reason: Encrypted File System (EFS) uses a public key certificate to encrypt files, and the private key associated with this certificate is not available on this computer.
Solution:
Find the private key of the corresponding certificate, and use the certificate snap-in to import the private key into the computer and use it on this computer.
3. Solve the problem that users can't access encrypted files after reinstalling the system based on NTFS (note: the encrypted user's certificate must be backed up before reinstalling WIN2000/XP);
Step 1: Encrypt the user to log on to the computer.
Step 2: Click Start → Run, type MMC, and then click OK.
Step 3: On the console menu, click Add/Remove Snap-in, and then click Add.
Step 4: Under a separate snap-in, click Certificates, and then click Add.
Step 5: Click "User Account" and then click "Finish" (as shown in Figure 2, if the encrypted user is not an administrator, this window will not appear and go directly to the next step).
Step 6: Click Close and then click OK.
Step 7: Double-click Certificate-current user, double-click individual, and then double-click certificate.
Step 8: Click on the "expected use" column to display the certificate with the words "encrypted file".
Step 9: Right-click the certificate, point to All Tasks, and then click Export.
Step 10: According to the instructions of the certificate export wizard, export the certificate and related private key in PFX file format (Note: it is recommended to export the private key to ensure that the certificate is password-protected to prevent others from stealing. In addition, certificates can only be saved to directories for which you have read and write permissions.
4. Keep the certificate.
Pay attention to save the PFX file. After reinstalling the system in the future, no matter which user, just double-click this certificate file and import this private certificate to access the encrypted folder of the original user of this certificate under NTFS system (note: the encrypted folder on NTFS partition backed up by backup recovery function cannot be restored to non-NTFS partition).
Finally, the certificate can also be used for the following purposes:
(1) Grant different users access to encrypted folders.
Export the certificate of Export Private Key and send it to other users on this computer who need to access this folder. Then he logs in, imports the certificate and realizes the access to this folder.
(2) Restore access to the previously encrypted folder backed up by the "Backup Recovery" program on the machine that is also WINXP.
Use the "Backup Recovery" program to back up the encrypted folder, and then copy the generated backup and BKF to another WINXP machine together with this certificate, and use the "Backup Recovery" program to recover (note: only NTFS partition can be recovered). Then import the certificate, and you can access the recovered file.
Four methods of encrypting folders under WIN98
First, the folder attribute method
In the WINDOWS Explorer window, right-click the folder you want to encrypt, click Properties, and then select the Hide check box. Set the key value of "CHECKEDVALUE" under the branch of "HKEY _ Local _ Machine Software" in the registry to the number "0".
In the future, even if you click Folder Options in the View menu, click the View tab, and select the Show All Files check box in the WINDOWS Explorer window, you will not see folders with hidden properties.
Second, the "recycling station" method
First, make sure that the "Show All Files" check button is selected, and the key value of "CHECKEDVALUE" in the registry is "1". Then, in the WINDOWS Explorer window, right-click the "C:RECYCLED" folder (this is the folder corresponding to the "Recycle Bin" on the C drive), click Properties, click the General tab, clear the "Enable Thumbnails" and "Read Only" check boxes, and then click the "OK" button.
After closing and restarting WINDOWS Explorer, you will see a desktop and INI file in the "C:RECYCLED" folder. Copy the file to the folder to be encrypted and set the folder to Read Only.
Third, the "file manager" method.
Click start/run, type WINFILE, click ok to open the file manager window, click by file type in the view menu, select the show hidden/system files check box, and then click ok. Drag the folder to be encrypted to the "C:RECYCLED" folder or the "RECYCLED" folder of another partition. This way, you can't see the folder on your computer or in the WINDOWS Explorer window.
Fourth, the method of setting the password.
1. Open the Explorer, select the folder (file directory) to be encrypted or protected, right-click in the blank space, and select the option of "Customize folder …";
2. In the "Custom Folder" checkbox, select "Create or edit HTML document" and click "Next" to start the HTML editor;
3. Click "Next" to start the HTML editor and automatically open the folder and HTT document;
4. Edit folders and HTT documents, search for "JAVA-SCRIPT" characters, and enter the following three lines at the bottom:
VAR PASS = PROMPT ("Please enter the password")
If (pass! = "ABC ")
{WINDOW、LOCATION = " E:" }；
5. Save the folder and HTT document, exit editing and select "Finish"; At this point, the encryption or protection of the folder has been completed;
6. Encryption test: Close all open documents and folders, reopen the Resource Manager, click the encrypted folder, and the system will prompt you to enter the password. Enter the correct password (the password set in this article is ABC) to access the folder, otherwise you will go to the E drive and cannot access it, thus protecting the folder and the files in it.
The company's computer encrypts the copied files. One is through windows user rights.
Locate the computer on the desktop, right-click it, and then click Manage in the pop-up window.
In the server manager window that opens, click Expand Configuration-Local Users and Groups, select the users under it, right-click in the right margin, and click New User in the pop-up window.
In the new user window that opens, enter the user name and password as needed, uncheck that the user must change the password the next time he logs in, check that the password never expires, and then click Create.
Right-click the folder you want to encrypt, and then click Properties in the pop-up window.
Locate and click Security at the top of the properties window that opens, and then locate and click Edit in the Security tab.
Select the user group at the top of the opened permissions window of dszgx, and then in the following user permissions, you can see that the user group only checks Allow reading, reading and execution, lists the contents of the folder, and then click OK in turn to return.
Because all the newly created. Users are listed in the user group, and the permissions of the user group on this file will also be inherited by the users under it. Therefore, when the newly created user logs on to the computer, the permissions on this file can only be read, but cannot be deleted, copied or modified.
Right-click the file again and click Properties again in the pop-up menu.
Find and click Advanced under the General tab, check Encryption in the pop-up window to protect data, and then click OK to return, and the setting is complete.
Second, through the encryption software settings.
Baidu's general trend computer file encryption software was downloaded in official website. After downloading, it was decompressed and the installation file of general trend computer file encryption software V2.0- trial version was found. Exe file, double-click it to install it until the installation is complete.
Find the file to be encrypted, right-click and click General Trend to File Encryption-General Encryption in the pop-up menu.
In the encryption window that pops up, select Advanced Encryption, and then click Set Permissions.
In the pop-up window, first find the access right of the encrypted file, check "Do not delete, copy or modify" under it, and then click OK.
Enter the encrypted password in the encryption window, and then click Encrypt.
Click Start-All Programs-Trend Micro Computer File Encryption System in turn, click the shortcut of Trend Micro Computer File Encryption System under it, enter your account number and password according to the login window that pops up, and click Login.
Find the folder just encrypted in the middle of the opened main interface, double-click to open it, enter the password in the pop-up window, and click Open.
Just find a file in a folder and try to delete it, indicating that there is no permission, and then try to copy and modify it and find that it cannot be executed, indicating that the setting is complete.
If you want to decrypt the encrypted file, and the file doesn't need to be encrypted in the future, find and click the folder decryption in the upper part of the main interface, lock and select the target folder in the pop-up window, and then click Open.
Enter the password in the pop-up window and click Decrypt.
The company's computer encrypted the copied files. System encryption method.
Find the folder to be encrypted, and right-click and select "Properties".
In the Properties dialog box, select the Advanced button under the General tab, and then click Enter.
In the "Advanced Properties" dialog box, you can see "Encrypted content protects data", check the previous check box, and then click "OK".
Then return to the properties dialog box and click OK again.
Then a dialog box "Confirm Attribute Change" will pop up, mainly to select the application scope of this change.
Then the system will notify the backup file encryption key. Click the icon in the notification message box or taskbar to start the backup.
In the Encrypt File System dialog box, select Backup Now.
Then you will enter the certificate export wizard. The first is the welcome page, and "Next Page" is enough.
After that, select "Export File Format" first, and generally click "Next" to select by default.
Then you need to add a password to the certificate, or you can choose an encryption method.
Then name the certificate to be exported, and click Browse to select the location to save the certificate. By default, it is saved in the document directory of the current user.
After that, the export is complete. Please confirm the export information. You can click ""in the upper left corner to return to the modification, and click "Finish" to export successfully.
At this point, the folder has been successfully encrypted.
Summary of steps:
① Right-click-Properties-Advanced-Check Encryption-Select Application Scope;
② backup file encryption key-"backup immediately";
③ Certificate export wizard;
④ Encryption is completed.