Vi/vim comes with encryption

Linux uses Vim/vi to encrypt and decrypt files
first, using VIM/VI encryption:
Advantages: After encryption, if you do not know the password, you can not see the plaintext, including the root user can not see;
Cons: Obviously let others know encryption, it is easy for others to destroy the encrypted files, including content destruction and deletion;

VI Editor believe that everyone is familiar with it, VI has a command is to encrypt the file, for example:
1) First create an experimental file under the root master directory/root/Text.txt:
[email protected] ~]# Vim/vi text.txt
2) Enter the edit mode, press ESC after entering the content, then enter: X (note is the uppercase X), enter;
3) Then the system prompts you to enter the password, 2 times, as follows:
Enter password: *******
Please enter again: *******
4) After saving the exit, now this file has been encrypted;
5) Use cat or more to view the contents of the file, displayed as garbled; re-edit this file with Vim/vi, will prompt for the password, if the password entered is incorrect, the same will be displayed as garbled!
Note: Do not forget the password after the file is encrypted!
second, decrypt the files encrypted with VI (provided that you know the encrypted password):
1) Open the file with Vim/vi, such as Text.txt, to enter the correct password, and then at the time of editing, set the password to empty, by entering the following command:
: Set key=
then directly enter, after saving the file, the file has been decrypted.
2) or This is OK:
after opening the file correctly with ": X" instruction, and then give a blank password can also. Save with "wq!" Save.
the two methods actually have the same effect.

Vi/vim comes with encryption