Mandatory options that are absent are inquired interactively, and pmt-ehd will exit if stdin is not a
terminal.
-D Turn on debugging strings.
-F Force operation that would otherwise ask for interactive confirmation. Multiple -F can be
specified to apply more force.
-ccipher
The cipher to be used for the filesystem. This can take any value that cryptsetup(8) recognizes,
usually in the form of "cipher-mode[-extras]". Recommended are aes-cbc-essiv:sha256 (this is the
default) or aes-xts-essiv:sha256.
-fpath
Store the new disk image at path. If the file already exists, pmt-ehd will prompt before
overwriting unless -F is given. If path refers to a symlink, pmt-ehd will act even more cautious.
-Hpath
Store a detached (separate) metadata file with a new LUKS header at path. If the file already
exists, pmt-ehd will prompt before overwriting unless -F is given. If path refers to a symlink,
pmt-ehd will act even more cautious. The default is to not use a detached header. Correlates with
the `cryptsetup --header` option.
-hhash
Message digest/hash used for key derivation in the PBKDF2 stage. The default is sha512.
-icipher
(This option had been removed in pam_mount/pmt_ehd 2.11.)
-kkeybits
The keysize for the cipher specified with -c. Some ciphers support multiple keysizes, AES for
example is available with at least the keysizes 192 and 256. Defaults to 256 (to match aes-cbc-
essiv). Note that XTS uses two keys, but drawn from the same key material, so aes-cbc-256 is
equivalent to aes-xts-512, and aes-cbc-128 is to aes-xts-256.
-ppath
(This option had been removed in pam_mount/pmt_ehd 2.11.)
-ssize
The initial size of the encrypted filesystem, in megabytes. This option is ignored when the
filesystem is created on a block device.
-tfstype
Filesystem to use for the encrypted filesystem. Defaults to xfs.
-uuser
Give the container and fskey files to user (because the program is usually runs as root, and the
files would otherwise retain root ownership).
-x Do not initialize the container with random bytes. This may impact secrecy.
Descriptionpmt-ehd can be used to create a new encrypted container, and replaces the previous mkehd script as well
as any HOWTOs that explain how to do it manually. Without any arguments, pmt-ehd will interactively ask
for all missing parameters. To create a container with a size of 256 MB, use:
pmt-ehd -f /home/user.cont -s 256
pam_mount 2011-Aug-05 pmt-ehd(8)