ccrypt
Secure encryption and decryption of files and streams
Matches ATT&CK tactic: Stealth ↗
Tooldefense-evasionredLinuxKali LinuxPlatforms: Linux · Last verified September 6, 2026
ccrypt is a utility for encrypting and decrypting files and streams. It was designed as a replacement for the standard unix crypt utility, which is notorious for using a very weak encryption algorithm. ccrypt is based on the Rijndael cipher, which is the U.S. government’s chosen candidate for the Advanced Encryption Standard (AES, see http://www.nist.gov/aes). This cipher is believed to provide very strong security.
Only use this tool against systems you own or are explicitly authorized to test — see the disclaimer.
Getting started
Install on Kali Linux with `sudo apt install ccrypt`. See the official Kali tool page and upstream homepage linked above for full usage and configuration details.
