Posts Tagged ‘Ubuntu’

Fixing hanging Crypto Stick (and other USB peripherals) problems

Wednesday, December 28th, 2011

As you may or may not know, we use the Crypto Stick as our SSH authentication mechanism. Lately, some of us are experiencing ‘hanging’ every now-and-again. Yesterday, I found a blogpost on Ludovic Rousseau’s blog, detailing that this problem stems from a race condition in libusb. This problem is fixed in an experimental branch of libusb. As a full upgrade of libusb (from an experimental branch no less) is out of the question, I backported the patch to Ubuntu 11.04 (natty) and 11.11 (oneiric). These packages indeed solve the problem of the ‘hanging’ Crypto Stick (and probably every other ‘hanging’ USB device). Binary and source packages are available here in our repository. Or, you can add our repo to your sources.list:

  • Natty: deb http://debian.kumina.nl/ubuntu/ natty-kumina main
  • Oneiric: deb http://debian.kumina.nl/ubuntu/ oneiric-kumina main

Two-factor LUKS using Ubuntu

Tuesday, October 19th, 2010

The earlier post about using two-factor LUKS with Ubuntu seems to work out perfectly well when using Ubuntu 10.10 “Maverick Meerkat”.

Two-factor LUKS using Ubuntu

Thursday, July 29th, 2010

Ubuntu 10.04 LTS “Lucid Lynx” supports LUKS quite well per default. This is a nice feature if you’re seeking for some extra security. But what if you want a real two-factor based solution?

In the office we have been using OpenPGP cards for quite some time now to secure data. It seemed a good idea to use the newly released USB version of the OpenPGP card combined with LUKS. Very easy to use since you only need to rember your PIN code and very secure as well (even more if you use 2048 or even 3072 bits keys).

Let’s assume you already own an OpenPGP card (smartcard or USB version) and are familiar with GnuPG. Nice, but what about the rest?

Ubuntu 10.04 Live DVD

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