Encrypting files with GPG


To encrypt single file, use command gpg as follows:
‘gpg -c filename’

Task: encrypt file

To encrypt myfinancial.info file, type the command:
[root@server1~]# gpg -c myfinancial.info
Output:

Enter passphrase:<YOUR-PASSWORD>
Repeat passphrase:<YOUR-PASSWORD>

This will create a myfinancial.info.gpg file.
Option:

    * -c : Encrypt with symmetric cipher.

Caution if you ever forgot your password aka passphrase, you cannot recover the data as it use very strong encryption.

Task: decrypt file

To decrypt file use gpg command:
[root@server1~]# gpg myfinancial.info.gpg
Output:

gpg myfinancial.info.gpg
gpg: CAST5 encrypted data
Enter passphrase:<YOUR-PASSWORD>

Decrypt file and write output to file financial.info.txt you can run command:
[root@server1~]# gpg myfinancial.info.gpg –o financial.info.txt

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