On 07/09/2012 10:51 AM, Lennart Poettering wrote: > On Fri, 29.06.12 13:40, Tom Gundersen ([email protected]) wrote: > >> This is useful if your keyfile is a block device, and you want to >> use a specific part of it, such as an area between the MBR and the >> first partition. >> >> This feature is documented in the Arch wiki[0], and has been supported >> by the Arch initscripts, so would be nice to get this into systemd. > > Hmm, I am not opposed to merge this, but before I do: I am a bit puzzled > what the usecase for this is -- why would you store the key like this? > Kinda defeats the purpose of encryption, no? > > Lennart >
It's no different than storing your key as a file (on a USB key) except there's a little added obfuscation. Also, it's simpler (imo); you don't have to wait for a FS to be mounted when unlocking your dm-crypt device.
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