Koumbit.org

Pour un internet libre et solidaire

Chris Pacia - Beginners’ Guide To PGP

What is PGP?

PGP stands for Pretty Good Privacy. At it’s core, it is an internet standard (called OpenPGP) used for data encryption and digital signatures. Software that employs this standard is available in both a free, open source version produced by the Free Software Foundation called the GNU Privacy Guard (or GPG for short) as well as a low-cost commercial version.

Let’s take a moment to understand some of the basics of how it works. In conventional encryption, a secret key is used to transform plaintext (the unencrypted data) into unreadable ciphertext. The same key is also used to decrypt the ciphertext and reveal the plaintext. While this process works well for encrypting data stored on your hard drive, it has its drawbacks for use in communication. For one, you need to somehow communicate the secret key to the other party. But how to do this securely? After all, the reason you are using encryption is because you don’t believe your communication channel is secure. You could meet in person and exchange the secret key offline, but that isn’t very convenient. Protocols have been developed to allow for secure exchange of keys across insecure communication channels, but they tend to work better for real-time chat than, say, sending encrypted emails.

PGP makes use of public-key encryption. One key (a public key) is used to encrypt the data and a separate key (the private key) is used to decrypt it.

(...)

Beginners’ Guide To PGP » Bitcoin Not Bombs

Permanence téléphonique

☏ +1 514 907 9494
Lun: 10h à 12h
Mar/Mer: 10h à 12h et 13h à 16h
Jeu: 10h à 12h
Mon: 10AM to 12PM
Tue/Wed: 10AM to 12PM et 13AM to 16PM
Thu: 10AM to 12PM

Venez nous voir!

6833, avenue de l’Épée, Bureau 308, Montréal (Québec) H3N 2C7, Canada
Veuillez noter que nos bureaux n'ont pas de stationnement attitré.
6833 de l’Épée Avenue, #308, Montreal, Quebec, H3N 2C7, Canada
Please note that you'll need to find on-street parking.

Écrivez-nous

Informations générales

Support technique

Pour une demande de devis, voir le formulaire à la page contact.

General inquiries

Technical support

For a free estimate, see the form on our contact page.

Suivez-nous

ktweb_menu_social