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Date: Tue, 14 Aug 2012 20:03:28 +0200
From: Heinz Diehl <htd@fancy-poultry.org>
Message-ID: <20120814180328.GA12875@fancy-poultry.org>
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Subject: Re: [dm-crypt] luksHeaderBackup
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To: dm-crypt@saout.de

On 14.08.2012, Two Spirit wrote: 

> Is the cryptsetup luksHeaderBackup equvalent to just doing a dd of the LUKS
> drive?

No.

> how would I know the exact total length. and I assume there is no offset
> for the header.

Look here:

http://wiki.cryptsetup.googlecode.com/git/LUKS-standard/on-disk-format.pdf