[PATCH v2 5/5] test_vboot.py: include test of fdt_add_pubkey tool
Simon Glass
sjg at chromium.org
Thu Mar 16 22:49:08 CET 2023
Hi Ivan,
On Thu, 16 Mar 2023 at 08:45, Ivan Mikhaylov <fr0st61te at gmail.com> wrote:
>
> On Thu, 2023-03-16 at 07:59 -0600, Simon Glass wrote:
> > Hi Ivan,
> >
> > On Wed, 15 Mar 2023 at 19:17, Ivan Mikhaylov <fr0st61te at gmail.com>
> > wrote:
> > >
> > > On Fri, 2023-03-10 at 17:46 -0800, Simon Glass wrote:
> > > > Hi Ivan,
> > > >
> > > > On Tue, 7 Mar 2023 at 14:13, Ivan Mikhaylov <fr0st61te at gmail.com>
> > > > wrote:
> > > > >
> > > > > From: Roman Kopytin <Roman.Kopytin at kaspersky.com>
> > > > >
> > > > > Signed-off-by: Roman Kopytin <Roman.Kopytin at kaspersky.com>
> > > > > Cc: Rasmus Villemoes <rasmus.villemoes at prevas.dk>
> > > > > ---
> > > > > test/py/tests/test_vboot.py | 8 ++++++++
> > > > > 1 file changed, 8 insertions(+)
> > > > >
> > > > > diff --git a/test/py/tests/test_vboot.py
> > > > > b/test/py/tests/test_vboot.py
> > > > > index e3e7ca4b21..956b8fcd43 100644
> > > > > --- a/test/py/tests/test_vboot.py
> > > > > +++ b/test/py/tests/test_vboot.py
> > > > > @@ -313,6 +313,13 @@ def test_vboot(u_boot_console, name,
> > > > > sha_algo,
> > > > > padding, sign_options, required,
> > > > >
> > > > > util.run_and_log(cons, [fit_check_sign, '-f', fit, '-
> > > > > k',
> > > > > dtb])
> > > > >
> > > > > + # Create a fresh .dtb without the public keys
> > > > > + dtc('sandbox-u-boot.dts')
> > > > > + # Then add the dev key via the fdt_add_pubkey tool
> > > > > + util.run_and_log(cons, [fdt_add_pubkey, '-a',
> > > > > '%s,rsa2048'
> > > > > % sha_algo,
> > > > > + '-k', tmpdir, '-n', 'dev', '-
> > > > > r',
> > > > > 'conf', dtb])
> > > > > + util.run_and_log(cons, [fit_check_sign, '-f', fit, '-
> > > > > k',
> > > > > dtb])
> > > > > +
> > > > > if full_test:
> > > > > # Make sure that U-Boot checks that the config is
> > > > > in
> > > > > the list of
> > > > > # hashed nodes. If it isn't, a security bypass is
> > > > > possible.
> > > > > @@ -500,6 +507,7 @@ def test_vboot(u_boot_console, name,
> > > > > sha_algo,
> > > > > padding, sign_options, required,
> > > > > mkimage = cons.config.build_dir + '/tools/mkimage'
> > > > > binman = cons.config.source_dir + '/tools/binman/binman'
> > > > > fit_check_sign = cons.config.build_dir +
> > > > > '/tools/fit_check_sign'
> > > > > + fdt_add_pubkey = cons.config.build_dir +
> > > > > '/tools/fdt_add_pubkey'
> > > > > dtc_args = '-I dts -O dtb -i %s' % tmpdir
> > > > > dtb = '%ssandbox-u-boot.dtb' % tmpdir
> > > > > sig_node = '/configurations/conf-1/signature'
> > > > > --
> > > > > 2.39.1
> > > > >
> > > >
> > > > Unfortunately this test fails on sandbox:
> > > >
> > > > https://source.denx.de/u-boot/custodians/u-boot-dm/-/jobs/591975
> > > >
> > > > I think it would be better to put it in its own test (perhaps in
> > > > the
> > > > same file) so we are not doing it on every test run. Also you
> > > > could
> > > > check (in a very basic way) that it adds the key correctly since
> > > > we
> > > > don't really need another test of the logic of doing that. We are
> > > > just
> > > > checking that your tool calls that logic correctly.
> > > >
> > > > I'll drop this one when applying, for now. Please take a look.
> > > >
> > > > Regards,
> > > > Simon
> > >
> > > Simon, does it look ok? Test for test_vboot is passed fine.
> >
> > Please see my message before:
> >
> > > Unfortunately this test fails on sandbox:
> > >
> > > https://source.denx.de/u-boot/custodians/u-boot-dm/-/jobs/591975
> > >
> > > I think it would be better to put it in its own test (perhaps in
> > > the
> > > same file) so we are not doing it on every test run. Also you could
> > > check (in a very basic way) that it adds the key correctly since we
> > > don't really need another test of the logic of doing that. We are
> > > just
> > > checking that your tool calls that logic correctly.
> > >
> > > I'll drop this one when applying, for now. Please take a look.
> >
> > I have not applied this patch due to the problem.
> >
> > Regards,
> > Simon
> >
>
> Simon, but I've changed the test and put it in previous note, maybe you
> didn't notice, I did what you asked:
> - made own test "test_fdt_add_pubkey"
> - simple check that with clear dtb you can add keys with fdt_add_pubkey
> and check with fit_check_sign with signed fit.
>
> I've checked that change with sandbox and it passes test_vboot well.
>
> Need I re-submit that patch or whole series?
OK, great. Yes please send that patch by itself (rebased to
u-boot-dm/next) so it is picked up by patchwork. You'll find the rest
of your patches in dm/next but they have not made it upstream yet.
Regards,
Simon
>
> Thanks.
>
> >
> >
> > >
> > > Thanks.
> > >
> > > From 5484d525d4950b064adf1204f5bf055229c942ac Mon Sep 17 00:00:00
> > > 2001
> > > From: Roman Kopytin <Roman.Kopytin at kaspersky.com>
> > > Date: Thu, 11 Nov 2021 11:15:12 +0300
> > > Subject: [PATCH v3] test_vboot.py: include test of fdt_add_pubkey
> > > tool
> > >
> > > Signed-off-by: Roman Kopytin <Roman.Kopytin at kaspersky.com>
> > > Signed-off-by: Ivan Mikhaylov <fr0st61te at gmail.com>
> > > Cc: Rasmus Villemoes <rasmus.villemoes at prevas.dk>
> > > ---
> > > test/py/tests/test_vboot.py | 33 +++++++++++++++++++++++++++++++++
> > > 1 file changed, 33 insertions(+)
> > >
> > > diff --git a/test/py/tests/test_vboot.py
> > > b/test/py/tests/test_vboot.py
> > > index e3e7ca4b21..5ae622fe21 100644
> > > --- a/test/py/tests/test_vboot.py
> > > +++ b/test/py/tests/test_vboot.py
> > > @@ -491,6 +491,37 @@ def test_vboot(u_boot_console, name, sha_algo,
> > > padding, sign_options, required,
> > > # Check that the boot fails if the global signature is not
> > > provided
> > > run_bootm(sha_algo, 'global image signature', 'signature
> > > is
> > > mandatory', False)
> > >
> > > + def test_fdt_add_pubkey(sha_algo, padding, sign_options):
> > > + """Test fdt_add_pubkey utility with given hash algorithm
> > > and
> > > padding.
> > > +
> > > + This function tests if fdt_add_pubkey utility may add
> > > public
> > > keys into dtb.
> > > +
> > > + Args:
> > > + sha_algo: Either 'sha1' or 'sha256', to select the
> > > algorithm to use
> > > + padding: Either '' or '-pss', to select the padding to
> > > use
> > > for the
> > > + rsa signature algorithm.
> > > + sign_options: Options to mkimage when signing a fit
> > > image.
> > > + """
> > > +
> > > + # Create a fresh .dtb without the public keys
> > > + dtc('sandbox-u-boot.dts')
> > > + make_fit('sign-configs-%s%s.its' % (sha_algo, padding))
> > > +
> > > + # Sign images with our dev keys
> > > + sign_fit(sha_algo, sign_options)
> > > +
> > > + # Create a fresh .dtb without the public keys
> > > + dtc('sandbox-u-boot.dts')
> > > +
> > > + cons.log.action('%s: Test fdt_add_pubkey with signed
> > > configuration' % sha_algo)
> > > + # Then add the dev key via the fdt_add_pubkey tool
> > > + util.run_and_log(cons, [fdt_add_pubkey, '-a', '%s,%s' %
> > > ('sha256' if algo_arg else sha_algo, \
> > > + 'rsa3072' if sha_algo == 'sha384'
> > > else
> > > 'rsa2048'),
> > > + '-k', tmpdir, '-n', 'dev', '-r',
> > > 'conf', dtb])
> > > +
> > > + # Check with fit_check_sign that FIT is signed with key
> > > + util.run_and_log(cons, [fit_check_sign, '-f', fit, '-k',
> > > dtb])
> > > +
> > > cons = u_boot_console
> > > tmpdir = os.path.join(cons.config.result_dir, name) + '/'
> > > if not os.path.exists(tmpdir):
> > > @@ -500,6 +531,7 @@ def test_vboot(u_boot_console, name, sha_algo,
> > > padding, sign_options, required,
> > > mkimage = cons.config.build_dir + '/tools/mkimage'
> > > binman = cons.config.source_dir + '/tools/binman/binman'
> > > fit_check_sign = cons.config.build_dir +
> > > '/tools/fit_check_sign'
> > > + fdt_add_pubkey = cons.config.build_dir +
> > > '/tools/fdt_add_pubkey'
> > > dtc_args = '-I dts -O dtb -i %s' % tmpdir
> > > dtb = '%ssandbox-u-boot.dtb' % tmpdir
> > > sig_node = '/configurations/conf-1/signature'
> > > @@ -516,6 +548,7 @@ def test_vboot(u_boot_console, name, sha_algo,
> > > padding, sign_options, required,
> > > with open(evil_kernel, 'wb') as fd:
> > > fd.write(500 * b'\x01')
> > >
> > > + test_fdt_add_pubkey(sha_algo, padding, sign_options)
> > > try:
> > > # We need to use our own device tree file. Remember to
> > > restore
> > > it
> > > # afterwards.
> > > --
> > > 2.39.1
> > >
> > >
>
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