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From: Heinz Diehl <htd@fancy-poultry.org>
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Subject: Re: [dm-crypt] How to recover partially overwritten LUKS volume?
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On 26.08.2012, Andr=E1s Korn wrote:=20

> Could it be that cryptsetup tries to use keyslot #1 based on the
> passphrase I enter, realizes that it's corrupt and throws an error
> without ever trying keyslot #2? But apparently no, because specifying
> an explicit --key-slot also fails.

AS far as I know, the passphrase is probed against all keyslots, and
the one which matches is taken.