From: Arno Wagner <arno@wagner.name>
To: dm-crypt@saout.de
Subject: [dm-crypt] Re: Reading the passphrase from a key-file
Date: Fri, 14 May 2021 15:53:39 +0200 [thread overview]
Message-ID: <20210514135339.GA17215@tansi.org> (raw)
In-Reply-To: <286a7fed-2e24-b622-d9fd-ed3445a547be@gmail.com>
On Fri, May 14, 2021 at 15:41:31 CEST, Milan Broz wrote:
> On 14/05/2021 13:51, Volker Dormeyer wrote:
> > Hello,
> >
> > today I have another question regading the key-file option. I am
> > scripting something where the passphare is given by STDIN, with the
> > following options:
> >
> > cryptsetup luksOpen /dev/sde hdd --header header.img --key-file -
> >
> > If I enter this line on a command line it prompts me with "Enter
> > passphrase for /dev/sde", I was suspecting nothing. How can I make sure
> > that the passphrase is being read form STDIN?
>
> Cryptsetup checks if there is input from a real terminal (then displays this message)
> or from a pipe. echo pwd | cryptsetup ... works.
>
> But if the input is a binary file, it will stop on the first EOL (then you must use --keyfile-size).
> Please read "NOTES ON PASSPHRASE PROCESSING FOR LUKS" in the man page.
>
> Milan
Was just about to point out the same thing.
"NOTES ON PASSPHRASE PROCESSING FOR LUKS" is towards the end of
the man-page.
Regards,
Arno
--
Arno Wagner, Dr. sc. techn., Dipl. Inform., Email: arno@wagner.name
GnuPG: ID: CB5D9718 FP: 12D6 C03B 1B30 33BB 13CF B774 E35C 5FA1 CB5D 9718
----
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next prev parent reply other threads:[~2021-05-14 13:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-14 11:51 [dm-crypt] Reading the passphrase from a key-file Volker Dormeyer
2021-05-14 13:41 ` [dm-crypt] " Milan Broz
2021-05-14 13:53 ` Arno Wagner [this message]
2021-05-14 14:12 ` Christoph Anton Mitterer
2021-05-14 15:22 ` Clemens Fruhwirth
2021-05-14 15:50 ` Milan Broz
2021-05-14 18:10 ` Clemens Fruhwirth
2021-05-14 20:43 ` Milan Broz
2021-05-15 7:08 ` Clemens Fruhwirth
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