linux-kernel - Re: Should we automatically generate a module signing key at all?

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Message-ID: <20150519155355.GB7549@localhost>
Date:	Tue, 19 May 2015 18:53:55 +0300
From:	Petko Manolov <petkan@...-labs.com>
To:	Mimi Zohar <zohar@...ux.vnet.ibm.com>
Cc:	Andy Lutomirski <luto@...capital.net>,
	David Howells <dhowells@...hat.com>,
	Andy Lutomirski <luto@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Michal Marek <mmarek@...e.cz>,
	David Woodhouse <dwmw2@...radead.org>,
	Abelardo Ricart III <aricart@...nix.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Sedat Dilek <sedat.dilek@...il.com>, keyrings@...ux-nfs.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	LSM List <linux-security-module@...r.kernel.org>,
	Borislav Petkov <bp@...en8.de>, Jiri Kosina <jkosina@...e.cz>
Subject: Re: Should we automatically generate a module signing key at all?

On 15-05-19 11:37:49, Mimi Zohar wrote:
> On Tue, 2015-05-19 at 07:36 -0700, Andy Lutomirski wrote:
> > 
> > What integrity stuff?  IIRC dm-verity doesn't use asymmetric crypto at
> > all.  IMA probably does, though.
> 
> IMA can appraise file integrity based on either hashes or signatures.
> The difference being that In addition to file integrity, signatures
> provides file provenance.  Going forward we'd like to see software come
> with the associated file signatures.

I second this one.  There's plenty of situations where integrity isn't enough 
and authenticity is needed.


cheers,
Petko
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