Let’s Encrypt is a free, automated, and open certificate authority (CA), run for the public’s benefit. It is a service provided by the Internet Security Research Group (ISRG).

Install

sudo apt install certbot python-certbot-nginx 

Nginx

sudo certbot --nginx

Renew

sudo certbot renew --dry-run

Let's Encrypt

The Linux Unified Key Setup (LUKS) is a disk encryption specification created by Clemens Fruhwirth in 2004 and was originally intended for Linux.

Install

sudo apt install cryptsetup

Encrypt

sudo cryptsetup luksFormat /dev/sdb1
sudo cryptsetup open /dev/sdb1 disk
sudo mkfs.ext4 /dev/mapper/disk

(Un)Mount

sudo cryptsetup …

GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP). GnuPG allows to encrypt and sign your data and communication, features a versatile key management system as well as access modules for all kinds of public key directories. GnuPG, also known …