Privacy

Linux Unified Key Setup (LUKS) is the standard specification for Linux block-device encryption. Implemented via the dm-crypt kernel module and managed with cryptsetup, LUKS provides transparent disk encryption below the filesystem layer. This guide walks through creating an encrypted partition on a storage device, initializing the LUKS header, formatting the decrypted mapping, and managing its mount lifecycle. Step 1: Partitioning the Target Disk Identify your target drive (e.g., /dev/sdb) using lsblk or fdisk -l. Use fdisk or parted to create a partition: ...

GnuPG (GPG) is a complete implementation of the OpenPGP standard (RFC 4880). It allows you to encrypt data either symmetrically (using a shared passphrase) or asymmetrically (using public/private key pairs). When you need to protect sensitive documents (such as financial records, credentials, or backups) before sending them over email or untrusted channels, symmetric GPG encryption provides strong, zero-infrastructure security. Symmetric Encryption with a Passphrase To encrypt a file symmetrically using a password: ...