L'Antre du Tryphon
You’ll find in this post the basic steps to create an encrypted luks file and open it. You’ll need to perform the following steps to create it:
dd if=/dev/urandom of=vaultfile.img bs=1M count=512
cryptsetup --verify-passphrase luksFormat vaultfile.img
sudo cryptsetup open --type luks vaultfile.img myvault
sudo mkfs.ext4 -m 0 -L myvault /dev/mapper/myvault
sudo cryptsetup close myvault
The following steps must be performed to mount the encrypted file:
sudo mkdir /myvaultmountpoint
sudo cryptsetup open --type luks vaultfile.img myvault
sudo mount /dev/mapper/myvault /myvaultmountpoint
Perform these steps to unmount the encrypted file.
sudo umount /myvaultmountpoint
sudo cryptsetup close myvault