# Boot off a live usb or similar as if you're installing
# If you're more comfortable with a different keyboard layout
$ loadkeys dvorak
# populate the second argument of the cryptsetup command based on this
$ parted <<<'print'
# the third argument may be anything, it needn't be used later
$ cryptsetup open /dev/sda3 foobar
# check your volume groups to see what to mount
$ ls /dev/vg