Software level Cryptographic Erase (CE) program and API written in C# to instantly wipe semi securely terabytes worth of data. Encryption standard: AES-256.
Download the exe(s) from the releases tab.
VoCrypt encrypts the selected file using a very long key that is appended to the beginning of the .VoCr file. When you want to destroy the file, VoCrypt just overwrites the key.
I wasn't able to recover it using any software, but due to how HDDs and flash memory works, it's most likely possible to recover the original key in a lab, so use a strong password or consider using Luks (and luks header erase for destruction) if your threat model includes your devices getting analysed in a lab.