Encrypt a file in Linux

# vim test.txt (write something here)

 

This is a Test file

 

:wq

Now see the Content of the file using cat command

 

# cat test.txt

 

This is Test file

 

Now we are going to Encrypt the file with gpg

 

# gpg -c test.txt

 

Enter Pass-phrase : <YOUR-PASSWORD>

Repeat Pass-phrase : <YOUR-PASSWORD>

 

You can see one more file create

 

# ls -l test*

-rw-rr 1 root root 59 2011-03-02 17:20 test.txt

-rw-rr 1 root root 97 2011-03-02 17:23 test.txt.gpg

 

Lets try to see encrypt file with cat command

 

# cat test.txt.gpg

i+`P$@CoEkW%>o

8*zbB`EA9{7

IW

 

Delete original File

 

# rm test.txt

 

Now we are going to decrypt the encrypted file

 

# gpg test.txt.gpg

Enter Pass-phrase : <YOUR-PASSWORD>

 

See decrypted file content

 

# cat test.txt

This is a Test file