linux-kernel - Re: sign-file and detached PKCS#7 firmware signatures

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Message-ID: <20150519161902.GC23057@wotan.suse.de>
Date:	Tue, 19 May 2015 18:19:02 +0200
From:	"Luis R. Rodriguez" <mcgrof@...e.com>
To:	David Howells <dhowells@...hat.com>
Cc:	rusty@...tcorp.com.au, mmarek@...e.cz, mjg59@...f.ucam.org,
	keyrings@...ux-nfs.org, dmitry.kasatkin@...il.com,
	linux-kernel@...r.kernel.org, seth.forshee@...onical.com,
	linux-security-module@...r.kernel.org, dwmw2@...radead.org
Subject: Re: sign-file and detached PKCS#7 firmware signatures

On Tue, May 19, 2015 at 10:25:24AM +0100, David Howells wrote:
> Luis R. Rodriguez <mcgrof@...e.com> wrote:
> 
> > There's a missing -binary argument here, other than that this works fine.
> 
> Good point.
> 
> > > 		 >$PKCS7_MESSAGE_FILE_IN_DER_FORM
> > 
> > I however cannot figure out how to use openssl to verify this signature.
> 
> Something like:
> 
> 	openssl smime -verify \
> 		-in $PKCS7_MESSAGE_FILE_IN_DER_FORM \
> 		-inform DER \
> 		-content $FIRMWARE_BLOB_NAME \
> 		-inkey $PRIVATE_KEY_FILE_IN_PEM_FORM \
> 		-signer $X509_CERT_FILE_IN_PEM_FORM
> 
> I would guess.

I tried a few things and no luck with that.

  Luis
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