# create image
truncate -s 25025314816 image.iso
sudo losetup /dev/loop1 image.iso
sudo cryptsetup luksFormat /dev/loop1
sudo cryptsetup luksOpen /dev/loop1 volume1
sudo mkudffs --label='disc label' -b 2048 /dev/mapper/volume1
sudo mount -t udf /dev/mapper/volume1 /mnt/iso/

# unmount
sudo umount /dev/mapper/volume1
sudo cryptsetup luksClose volume1
sudo losetup -d /dev/loop1

# mount iso
sudo losetup /dev/loop1 image.iso
sudo cryptsetup luksOpen /dev/loop1 volume1
sudo mount -t udf -o rw,uid=1000,gid=1000 /dev/mapper/volume1 /mnt/iso

# burn BluRay Disc
growisofs -dvd-compat -speed=1 -Z /dev/sr0=image.iso

# mount disc
sudo losetup /dev/loop1 /dev/sr0
sudo cryptsetup -r luksOpen /dev/loop1 volume1
sudo mount -t udf -o ro /dev/mapper/volume1 /mnt/iso/