pmt-ehd throws error 'crypt_format: Invalid argument'

[Andreas Mahling]

action: want to create an encrypted container with pmt-ehd

am@pecorino:~$ sudo pmt-ehd -f /home/am/test -x
Container size in megabytes: 100
Creating a new container at /home/am/test
Do you really want to overwrite /home/am/test? (y/n)
y
Truncating container
NOTE: Use the end-user passphrase here. DO NOT feed it a hash of a passphrase or anything otherwise fancy. pmt-ehd(8), as well as cryptsetup(8)'s luksFormat will, by default, do the master key generation and hashing themselves!
Password:
Reenter password:
crypt_format: Invalid argument

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: libpam-mount 2.16-10
ProcVersionSignature: Ubuntu 5.4.0-54.60-generic 5.4.65
Uname: Linux 5.4.0-54-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat Nov 28 20:37:32 2020
InstallationDate: Installed on 2020-11-02 (25 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: libpam-mount
UpgradeStatus: No upgrade log present (probably fresh install)

[Paride Legovini (paride)]

Hello Andreas and thanks for this bug report. I can reproduce the issue you describe on Focal and Hirsute. A very similar command is given as an example in pmt-ehd's manpage (pmt-ehd(8), not installed by libpam-mount-bin but available in the source package, see [1]).

I'm marking this bug as Triaged and subscribing the Ubuntu Server Team to it.

[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=976154

[Launchpad Janitor (janitor)]

This bug was fixed in the package libpam-mount - 2.17-2

---------------
libpam-mount (2.17-2) unstable; urgency=medium

  * Make d/not-installed arch independent
  * Document sshfs without fd0ssh.
    Thanks to Michel Le Bihan (Closes: #952989)

 -- Jochen Sprickerhof <email address hidden> Fri, 25 Dec 2020 16:54:23 +0100