Vi/vim comes with encryption

Linux encrypts and decrypts files with vim/vi

First, use vim/vi encryption:

Advantages: after encryption, if you don't know the password, you can't see the plaintext, including root users.

Disadvantages: obviously let others know the encryption, it is easy for others to destroy the encrypted files, including content destruction and deletion

Vi editor I believe everyone is familiar with it, there is a command in vi to encrypt files, for example:

1) first, create an experimental file text.txt under the root home directory / root/:

[root@www ~] # vim/vi text.txt

2) enter edit mode, press ESC after typing, then enter: X (uppercase X), and enter enter

3) at this point, the system prompts you to enter your password twice, as follows:

Enter the password: *

Please enter again: *

4) exit after saving, and now this file is encrypted

5) use cat or more to view the contents of the file and show it as garbled; if you re-edit the file with vim/vi, you will be prompted for a password, and if you enter an incorrect password, it will also be displayed as garbled!

Note: after the file is encrypted, don't forget the password!

Decrypt files encrypted with vi (provided you know the encrypted password):

1) to open a file such as text.txt with vim/vi, enter the correct password, and then set the password to empty when editing by entering the following command:

: set key=

Then enter directly, and after saving the file, the file has been decrypted.

2) or this is fine:

Use the ": X" command after opening the file correctly, and then give an empty password. Save with "wq!" Save.

The effect of the two methods is actually the same.