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Learn about PGP using GPA

Nov 20 2025
Encrypted messaging is everywhere. The problem is that those who own the services can be bullied into sharing the encryption keys. Encryption works better on an individual level. I own my private encryption keys on an encrypted drive and you own yours. This way it's only possible for someone to decrypt our messages if you or I give up our private keys.
We use encryption to keep secrets. The desire for secrecy is generally mutual, this is why people trust each other when sending PGP encrypted messages using software like GPA.
The GNU Privacy Assistant (GPA) is a graphical user interface for the GNU Privacy Guard (GnuPG). It can be used to encrypt, decrypt, and sign files, to verify signatures and to manage the private and public keys.

GPA Installation

So you want to use GPA to send PGP encrypted messages? Okay! Make sure it's installed:
sudo apt install gpa

Personal PGP Key Creation

Start GPA! If you have no private key GPA will ask if you would like to generate one now.
Select 'Generate key now'
GNU Privacy Assistant screen shot
Use a fake name here to maintain anonymity. Select 'Forward'.
GNU Privacy Assistant screen shot
Use a fake email address to maintain anonymity. Select 'Forward'.
GNU Privacy Assistant screen shot
Select 'Forward' to create a backup copy of your private/public keys.
GNU Privacy Assistant screen shot
Enter a strong password to protect your new keys.
After password creation you choose a directory to backup your new private/public keys.
GNU Privacy Assistant screen shot
After choosing a directory for backup you'll be asked for the password you just created.
GNU Privacy Assistant screen shot
Great work! You created a backup of your keys! Don't let it fall into the wrong hands! Anybody who obtains it will be able to decrypt messages intended for you alone. Not only would this place you in danger but you could put your friends in danger as well. Maybe you wanna move this backup off your computer and unto an encrypted external hard drive? Yeah, That'd be smart.
GNU Privacy Assistant screen shot
Here's your key! yay!
GNU Privacy Assistant screen shot

Send your freinds an ecrypted message

If you want to send your freinds a PGP encrypted message you'll need to get your friends Public PGP keys. Let's write an email to our freinds at tor.taxi and thank them for doing basic research on onion sites and providing honest data to the public for so many years.
Our freinds Public PGP Key is on their homepage. Here is a link. You can save the link directly or you can open the link and copy and paste all the text into a file. Save the file as 'pgp.txt'. It is necessary to import the file into GPA before we can encrypt our message.
Go to 'Keys' -> 'Import Keys...' or simply click the 'Import Keys' button near top left.
Select tor.taxi's Public Key file 'pgp.txt' and import it.
Here we see our friends public key has been imported in Key Manager right below our own.
GNU Privacy Assistant screen shot
Open the Clipboard. Type a heartfelt message to our freinds at tor.taxi.
Once your message is complete hover over icons at top and select 'Encrypt the buffer text'.
GNU Privacy Assistant screen shot
Select our freinds Public Key from the list. Select 'OK'.
GNU Privacy Assistant screen shot
Select 'Yes'.
GNU Privacy Assistant screen shot
Your encrypted message will look somewhat like the following one.
GNU Privacy Assistant screen shot
Now copy your encrypted 'PGP MESSAGE' message and paste it into an email to contact@tor.taxi
Make sure they hae your Public Key if you want them to reply with an encrypted messsage!
You did really well. I'm proud of you.
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