GnuPG is a complete and free implementation of OpenPGP as defined by RFC4880 (also known as PGP).
GnuPG allows you to encrypt and sign your data and communications. It has a flexible system managementof keys, along with accessor modules for all types of public key directories
GnuPG, also known as GPG, is a line tool orders, with features for easy integration with other applications. A plethora of frontend applications and libraries are available. GnuPG also provides support for S/MIME and Secure Shell (ssh).
Let's create a simple text file with the help of the gedit tool that is already preinstalled on Kali Linux.
To create a file, type
Command: gedit iguru.txt
To encrypt this file, type the following command:
Command: gpg -c iguru.txt
which also asks you to set your password and will create a new file with the name iguru.txt.gpg
Enter “ls”To list all the files in the current directory and as you can see, we now have two files, i.e. iguru.txt and iguru.txt.gpg (which were encrypted) and are very difficult to recover or break.
To view the contents of the encrypted file, type “cat iguru.txt.gpg”As shown below:
To decrypt the same file, type “gpg iguru.txt.gpg”In the same terminal that exports the original file.
