This is a more convenient way to pass along the key when creating encrypted backups of unprivileged containers in PVE where the unprivileged user namespace cannot access `/etc/pve/priv`. Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
and use api macro for methods and Kdf type Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>