Re: Linux Firmware Signing

From	"Luis R. Rodriguez" <mcgrof@suse.com>
Newsgroups	linux.kernel
Subject	Re: Linux Firmware Signing
Date	2015-08-27 21:40 +0200
Message-ID	<q2bbI-5yj-11@gated-at.bofh.it> (permalink)
References	(5 earlier) <q1SiK-3zd-21@gated-at.bofh.it> <q1SiK-3zd-23@gated-at.bofh.it> <q1SiK-3zd-25@gated-at.bofh.it> <q1SiK-3zd-27@gated-at.bofh.it> <q22L7-1Qs-3@gated-at.bofh.it>
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On Thu, Aug 27, 2015 at 11:38:58AM +0100, David Howells wrote:
> Luis R. Rodriguez <mcgrof@suse.com> wrote:
> 
> > "PKCS#7: Add an optional authenticated attribute to hold firmware name"
> > https://git.kernel.org/cgit/linux/kernel/git/dhowells/linux-fs.git/commit/?h=fwsign-pkcs7&id=1448377a369993f864915743cfb34772e730213good
> > 
> >         1.3.6.1.4.1.2312.16     Linux kernel
> >         1.3.6.1.4.1.2312.16.2   - PKCS#7/CMS SignerInfo attribute types
> >         1.3.6.1.4.1.2312.16.2.1   - firmwareName
> > 
> > I take it you are referring to this?
> 
> Yes.
> 
> > If we follow this model we'd then need something like:
> > 
> >         1.3.6.1.4.1.2312.16.2.2   - seLinuxPolicyName
> > 
> > That should mean each OID that has different file names would need to be
> > explicit about and have a similar entry on the registry. I find that pretty
> > redundant and would like to avoid that if possible.
> 
> firmwareName is easy for people to understand - it's the name the kernel asks
> for and the filename of the blob.  seLinuxPolicyName is, I think, a lot more
> tricky since a lot of people don't use SELinux, and most that do don't
> understand it (most people that use it aren't even really aware of it).
> 
> If you can use the firmwareName as the SELinux/LSM key, I would suggest doing
> so - even if you dress it up as a path (/lib/firmware/<firmwareName>).

It seems we don't have to worry about it now, and perhaps SELinux folks might
go another route.

  Luis
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Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-08-27 01:30 +0200
  Re: Linux Firmware Signing Paul Moore <paul@paul-moore.com> - 2015-08-27 04:40 +0200
    Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-08-27 21:40 +0200
      Re: Linux Firmware Signing Paul Moore <paul@paul-moore.com> - 2015-08-28 01:50 +0200
  Re: Linux Firmware Signing David Howells <dhowells@redhat.com> - 2015-08-27 12:40 +0200
    Re: Linux Firmware Signing "David Woodhouse" <dwmw2@infradead.org> - 2015-08-27 14:10 +0200
      Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-08-27 23:30 +0200
        Re: Linux Firmware Signing Paul Moore <paul@paul-moore.com> - 2015-08-28 02:00 +0200
          RE: Linux Firmware Signing "Roberts, William C" <william.c.roberts@intel.com> - 2015-08-28 13:30 +0200
            Re: Linux Firmware Signing Paul Moore <paul@paul-moore.com> - 2015-08-29 00:30 +0200
              Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-08-29 04:10 +0200
                Re: Linux Firmware Signing Paul Moore <paul@paul-moore.com> - 2015-09-01 05:00 +0200
                Re: Linux Firmware Signing Joshua Brindle <brindle@quarksecurity.com> - 2015-09-01 16:20 +0200
                RE: Linux Firmware Signing "Roberts, William C" <william.c.roberts@intel.com> - 2015-09-01 22:10 +0200
                Re: Linux Firmware Signing Joshua Brindle <brindle@quarksecurity.com> - 2015-09-01 22:50 +0200
                Re: Linux Firmware Signing Eric Paris <eparis@redhat.com> - 2015-09-02 00:30 +0200
            Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-08-29 04:00 +0200
        Re: Linux Firmware Signing Mimi Zohar <zohar@linux.vnet.ibm.com> - 2015-08-28 02:00 +0200
          Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-08-29 04:20 +0200
            Re: Linux Firmware Signing Mimi Zohar <zohar@linux.vnet.ibm.com> - 2015-08-31 16:30 +0200
              Re: Linux Firmware Signing David Woodhouse <dwmw2@infradead.org> - 2015-08-31 18:10 +0200
                Re: Linux Firmware Signing Mimi Zohar <zohar@linux.vnet.ibm.com> - 2015-08-31 18:50 +0200
                Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-02 02:10 +0200
              Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-02 01:50 +0200
                Re: Linux Firmware Signing Kees Cook <keescook@chromium.org> - 2015-09-02 05:10 +0200
                Re: Linux Firmware Signing Mimi Zohar <zohar@linux.vnet.ibm.com> - 2015-09-02 05:50 +0200
                Re: Linux Firmware Signing Kees Cook <keescook@chromium.org> - 2015-09-02 17:30 +0200
                Re: Linux Firmware Signing Mimi Zohar <zohar@linux.vnet.ibm.com> - 2015-09-02 18:50 +0200
                Re: Linux Firmware Signing Austin S Hemmelgarn <ahferroin7@gmail.com> - 2015-09-02 19:40 +0200
                Re: Linux Firmware Signing Mimi Zohar <zohar@linux.vnet.ibm.com> - 2015-09-03 02:00 +0200
                Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-03 02:20 +0200
        Re: Linux Firmware Signing Kees Cook <keescook@chromium.org> - 2015-09-01 22:30 +0200
          Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-02 02:10 +0200
            Re: Linux Firmware Signing Mimi Zohar <zohar@linux.vnet.ibm.com> - 2015-09-02 05:40 +0200
              Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-02 20:50 +0200
                Re: Linux Firmware Signing Kees Cook <keescook@chromium.org> - 2015-09-02 23:00 +0200
                Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-02 23:40 +0200
                Re: Linux Firmware Signing Kees Cook <keescook@chromium.org> - 2015-09-03 23:20 +0200
                Re: Linux Firmware Signing Mimi Zohar <zohar@linux.vnet.ibm.com> - 2015-09-03 02:10 +0200
                Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-09-03 02:30 +0200
                Re: Linux Firmware Signing Mimi Zohar <zohar@linux.vnet.ibm.com> - 2015-09-03 05:10 +0200
    Re: Linux Firmware Signing "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-08-27 21:40 +0200

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