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How to encrypt files

Question 1: How to encrypt documents on the computer? 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" checkbox

Also pay attention to the following five points during the encryption process:

1. To open "Windows Explorer", click "Start → Programs → Accessories" and then click "Windows Explorer".

2. Only files and folders on NTFS partitions can be encrypted. Files and folders on FAT partitions 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, and files located in the systemroot directory structure cannot be encrypted.

5. When encrypting a folder, the system will ask if you want to also encrypt its subfolders. If you select Yes, its subfolders will also be encrypted, and all files and subfolders added to the folder in the future will be automatically encrypted when added.

2. Decrypt files or folders

Step 1: Open Windows Explorer.

Step 2: Right-click the encrypted file or folder and click "Properties".

Step 3: On the General tab, click Advanced.

Step 4: Clear the "Encrypt content to protect data" checkbox.

Similarly, we should pay attention to the following issues when using decryption:

1. To open "Windows Explorer", click "Start → Programs → Attachments", and then Click "Windows Explorer".

2. When decrypting a folder, the system will ask whether you want 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 remain encrypted. However, new files and folders created in the decrypted folder will not be automatically encrypted

Question 2: How to set a password on the folder 1. Encrypt files or folders

< p> 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" checkbox

Also pay attention to the following five points during the encryption process:

1. To open "Windows Explorer", click "Start → Programs → Accessories" and then click "Windows Explorer".

2. Only files and folders on NTFS partitions can be encrypted. Files and folders on FAT partitions 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, and files located in the systemroot directory structure cannot be encrypted.

2. Decrypt files or folders

Step 1: Open Windows Explorer.

Step 2: Right-click the encrypted file or folder and click "Properties".

Step 3: On the General tab, click Advanced.

Step 4: Clear the "Encrypt content to protect data" checkbox.

Similarly, we should pay attention to the following issues when using decryption:

1. To open "Windows Explorer", click "Start → Programs → Attachments", and then Click "Windows Explorer".

2. When decrypting a folder, the system will ask whether you want 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 remain encrypted. However, new files and folders created within the decrypted folder will not be automatically encrypted.

The above is the method of using file encryption and decryption! During use, we may encounter the following problems, which are explained here:

1. The advanced button cannot be used

Reason: Encrypted File System (EFS) can only Works with 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 will not appear in the file or folder's properties.

Solution:

Convert the volume to an NTFS volume with a conversion utility.

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, " Access Denied" message

Cause: Encrypting File System (EFS) uses a public key certificate to encrypt files, and the private key associated with that certificate is not available on this computer.

Solution:

Find the private key for the appropriate certificate and use the Certificates snap-in to import the private key to your computer and use it locally.

3. Solution to the problem that users encrypt files based on NTFS and the encrypted files cannot be accessed after reinstalling the system (note: be sure to back up the encrypted user's certificate before reinstalling Win2000/XP):

Step 1: Log in to the computer as an encrypted user.

Step 2: Click "Start → Run", type "mmc", and then click "OK".

Step 3: On the Console menu, click Add/Remove Snap-ins, and then click Add.

Step 4: Under Separate Snap-ins, click Certificates, and then click Add.

Step 5: Click "My User Account" and then click "Finish" (as shown in Figure 2, if your encrypted user is not an administrator, this window will not appear and go directly to the next step).

Step 6: Click Close, then click OK.

Step 7: Double-click "Certificate - Current User", double-click "Personal", and then double-click "Certificate".

Step 8: Click the certificate that says "Encrypted File" in the "Intended Purpose" column.

Step 9: Right-click the certificate, point to All Tasks, and then click Export.

Step 10: Follow the instructions of the Certificate Export Wizard to export the certificate and related private key in PFX file format (Note: It is recommended to use the "Export Private Key" method to export, which can ensure that the certificate is protected by a password. Prevent... >>

Question 3: How to hide and encrypt files on your computer? You can use Folder Encryption Super Master

Folder Encryption Super Master Five folder encryption methods can meet various folder encryption needs. It adopts internationally mature encryption algorithms and safe and fast encryption methods.

Encrypting files and folders is fast, safe, and prevents deletion. , anti-copying, anti-movement. There are also unique opening functions for encrypted files and encrypted folders, and the SB function can be disabled and read-only to ensure the security of the data on your computer. >

Question 4: How to encrypt the files in the mobile phone? The first method is to use the mobile phone lock to encrypt the file. Use the mobile phone lock to lock the program that opens the file. The program cannot be opened without the password, thereby achieving the purpose of file encryption.

The second method, using shift encryption, is to put the files you want to hide in a hidden folder such as System, so that your files will not be displayed. This method of hiding files is very useful, but it is very annoying to find the hidden files. Of course, if you have a computer, that is another matter. The third method is to change the suffix name encryption and use the built-in file management to change the suffix name of the picture, video, and sound file, and then the changed file will not appear in the multimedia. If you need to view it, change the suffix name back. Can. The fourth method is to use file lock Best_Crypto to encrypt. This software can encrypt files in each folder of C/D/E of the mobile phone. It can encrypt files such as jpg, gif, sis, 3gp, mp4, etc. It was released earlier for S60 The encryption method of the third version of the encryption software is to copy the original file and then encrypt it. The fifth method is to use File Power, Y-Manager or Q-Manager encryption to change the properties of the folder to hidden, and then move the files that need to be encrypted to the folder. However, in practice, I found that files viewed in multimedia can still be viewed in multimedia even after the file is moved to a hidden folder. The solution is: after moving the file to a hidden folder, change the file's name. The fifth method is to use Phone Wizard to encrypt. Phone Wizard's encryption function is extremely powerful and can encrypt text messages, call records and files. Here I will only talk about the file encryption method: enter Phone Wizard--File Manager--Enter the password. (If the password has not been changed, the default is 123) - Find the file that needs to be encrypted - Options - Encryption (to encrypt multiple files, mark them first and then encrypt them). Phone Genie can only encrypt files, not folders. Encrypted files can be viewed with Y-Manager or Q-Manager, but cannot be opened. To decrypt, just enter the file management of Phone Genius and click on the silly item. Just choose decryption. In order to prevent others from seeing the private files on our mobile phones and causing unnecessary trouble in life, you can choose to encrypt the private files. We commonly use the above methods, each with its own merits. If you have other You can also share some good ways to encrypt mobile phone files.

Question 5: How to encrypt a Word document? By encrypting the WORD document, you can only view it and cannot make any modifications.

Below I will give you several encryption methods:

File menu settings: 1. Open the Word document that needs to be encrypted. 2. Select "Save As" in "File", the "Save As" dialog box will appear, select "General Options" in "Tools", and the "Save" tab will appear. 3. Enter the passwords in "Open Permission Password" and "Modify Permission Password" respectively (these two passwords can be the same or different). 4. Confirm "Open Permission Password" and "Modify Permission Password" again. Press OK to exit the Save tab. 5. Save files.

Set by the Tools menu: 1. Open the Word document that needs to be encrypted. 2. Select the "Options" command from the "Tools" menu, and the "Options Dialog Box" will appear. 3. Select the "Save" tab in the "Options" dialog box. 4. Enter the password in "Open Permission Password" and "Modify Permission Password" respectively, and click "OK" to exit. 5. Save the file.

Question 6: How to encrypt and save folders? Issues with encryption and decryption in NTFS format

NTFS is an advanced file system that provides security and reliability supported by WinNT and above. In Win2000 and WinXP, NTFS can also provide advanced features such as file and folder permissions, encryption, disk quotas, and compression.

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" checkbox

Also pay attention to the following five points during the encryption process:

1. To open "Windows Explorer", click "Start→Programs→Accessories" and then click "Windows Explorer".

2. Only files and folders on NTFS partitions can be encrypted. Files and folders on FAT partitions 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, and files located in the systemroot directory structure cannot be encrypted.

2. Decrypt files or folders

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" checkbox.

Similarly, we should pay attention to the following issues when using decryption:

1. To open "Windows Explorer", click "Start → Programs → Attachments", and then Click "Windows Explorer".

2. When decrypting a folder, the system will ask whether you want 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 remain encrypted. However, new files and folders created within decrypted folders will not be automatically encrypted.

The above is the method of using file encryption and decryption! During use, we may encounter the following problems, which are explained here:

1. The advanced button cannot be used

Solution:

Convert the volume to an NTFS volume with a conversion utility.

Open a command prompt.

Type: Convert [drive]/fs:ntfs

(drive is the drive letter of the target drive)

2. When opening the encrypted file, " Access Denied" message

Cause: Encrypting File System (EFS) uses a public key certificate to encrypt files, and the private key associated with that certificate is not available on this computer.

Solution:

Find the private key for the appropriate certificate and use the Certificates snap-in to import the private key to your computer and use it locally.

Step 1: Log in to the computer as an encrypted user.

Step 2: Click "Start → Run", type "mmc", and then click "OK".

Step 3: On the Console menu, click Add/Remove Snap-ins, and then click Add.

Step 4: Under Separate Snap-ins, click Certificates, and then click Add.

Step 5: Click "My 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, then click OK.

Step 7: Double-click "Certificate - Current User", double-click "Personal", and then double-click "Certificate".

Step 8: Click the certificate that displays the words "Encrypted File" in the "Intended Purpose" column... >>

Question 7: How can the word document be encrypted? Encrypt the WORD document so that you can only view it and not make any modifications

Here are a few encryption methods:

Set from the Tools menu: 1. Open the Word document that needs to be encrypted. 2. Select the "Options" command from the "Tools" menu, and the "Options Dialog Box" will appear. 3. Select the "Save" tab in the "Options" dialog box. 4. Enter the password in "Open Permission Password" and "Modify Permission Password" respectively, and click "OK" to exit. 5. Save the file.

Answered by: Anonymous 2-4 11:17

Question 8: How to encrypt a file or folder on the computer? 1. Enter the folder you want to encrypt and protect, right-click in the blank space and select the Customize folder... option;

2. Click Next to select Customize and select Select or edit the Html template of this folder in the selection box, and click Next;

3. Select Standard in the Select Template Type, and select the Edit this template option, and click Next; < /p>

4. Find