A USB stick that hides a partition with a simple text file

Encryption protocols for securing data are often complex and difficult for ordinary users to understand. The Phantomdrive project, developed on GitHub by o7-machinehum, offers a completely fresh approach to data privacy on USB drives. Instead of classic software solutions, the device uses a clever trick. This involves hiding data directly at the hardware controller level.

When you plug the Phantomdrive into your computer, it behaves like a completely normal, unprotected flash drive. The operating system and standard disk management tools only see the “public” partition. The second, encrypted partition remains completely invisible to prying eyes and automated forensic scanners that otherwise look for standard “heads” of encrypted partitions.

At the heart of the Phantomdrive is the CH569W microcontroller with RISC-V architecture, which contains the logic for the USB 3.0 controller and built-in hardware AES encryption. To access hidden files, no special scripts or installed software are required. The user simply creates and saves a text file with a secret password on the public partition. The CH569W chip automatically monitors file write operations, reads the entered password, disconnects the storage controller, and uses hardware to obtain AES-XTS keys. The drive is then reconnected, this time with the private partition revealed.

As this is an open-source and highly experimental project, a certain amount of caution is warranted in everyday use. This solution is primarily intended for embedded security enthusiasts and developers. Nevertheless, this unconventional method of concealment demonstrates how clever hardware design can create true physical memory concealment.