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What is GPA?

Kleopatra and the command line aren't the only ways to create and use OpenPGP keys now. We now have a new lightweight application called GPA which stands for GNU Privacy Assistant. I am writing this to help you learn the ins and outs of using OpenPGP encryption with the GPA app.

How to install and use GPA for OpenPGP message encryption.

First off, let's install the application.

sudo apt install gpa

Launch it using the following command:

gpa

It's going to ask you to make some keys. Let's do it!

GNU_Privacy_Assistant

It's going to ask for your full name. Make somthing up here.

GNU_Privacy_Assistant

It's going to ask for you email. Make something up here.

GNU_Privacy_Assistant

It's going to recommend you create a backup. Tick 'Do it later'

GNU_Privacy_Assistant

You will be prompted to crate a password. Create one now!

GNU_Privacy_Assistant

Your keys are now ready to use. You should see them here:

GNU_Privacy_Assistant

Now that you have OpenPGP keys, lets encrypt a secret message!

Select your keys and click on 'Open the clipboard'

GNU_Privacy_Assistant

Now type in your secret message and click 'Encrypt the buffer text'

GNU_Privacy_Assistant

Now select the Public Keys you want to use for encrypting the message

Click 'OK'

GNU_Privacy_Assistant

You should now see your message encrypted!

GNU_Privacy_Assistant

You can send decrypt this message later or send it to a friend who has your public key

Sharing your OpenPGP public key with a friend using GPA

Select the keys your created and click on 'Export Keys'

GNU_Privacy_Assistant

Choose a filename and a directory in which to save your Public Key

GNU_Privacy_Assistant

Great job! You did it!

GNU_Privacy_Assistant

Your Public key should look like this:

-----BEGIN PGP PUBLIC KEY BLOCK-----
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=z/DT
-----END PGP PUBLIC KEY BLOCK-----

Whoever has this Public key can decrypt the messages you create with GPA

Importing a friends Public Key using GPA

Open GPA and select 'Import Keys'

GNU_Privacy_Assistant

Select the Public keys you got from a friend and import them

GNU_Privacy_Assistant

You did it! Great job!

GNU_Privacy_Assistant

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