ccrypt is a lightweight, command-line utility used to encrypt and decrypt files and streams in Linux using the secure Rijndael cipher (AES-256). It serves as a modern, highly secure replacement for the ancient and broken Unix crypt utility. When you encrypt a file, ccrypt destructively overwrites the original data and appends a .cpt extension to the filename.
Here is a comprehensive guide on how to install and use ccrypt to secure your files. Installation
You can install ccrypt using your distribution’s package manager: Debian / Ubuntu / Kali Linux: Run sudo apt install ccrypt. RHEL / Fedora / CentOS: Run sudo dnf install ccrypt. Arch Linux: Run sudo pacman -S ccrypt. Core Modes and Usage
The ccrypt tool provides dedicated aliases (ccencrypt and ccdecrypt) so you do not have to memorize flags. 1. Encrypting a File
To encrypt a file, use either the -e flag or the ccencrypt command. ccrypt -e confidential.txt # OR ccencrypt confidential.txt Use code with caution. File encryption and decryption with ccrypt – Red Hat
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