diff -Nru landscape-client-16.03/debian/changelog landscape-client-16.03/debian/changelog
--- landscape-client-16.03/debian/changelog	2018-01-23 16:21:35.000000000 +0000
+++ landscape-client-16.03/debian/changelog	2018-02-07 19:04:24.000000000 +0000
@@ -1,3 +1,9 @@
+landscape-client (16.03-0ubuntu3.17.10.3) artful; urgency=medium
+
+  * Implicitly trust file-local sources managed by landscape (LP: #1736576)
+
+ -- Simon Poirier <simon.poirier@canonical.com>  Wed, 07 Feb 2018 19:04:24 +0000
+
 landscape-client (16.03-0ubuntu3.17.10.2) artful; urgency=medium
 
   * d/p/set-vm-info-to-kvm-for-aws-C5-instances.patch:
diff -Nru landscape-client-16.03/debian/landscape-client.postinst landscape-client-16.03/debian/landscape-client.postinst
--- landscape-client-16.03/debian/landscape-client.postinst	2017-11-10 17:44:17.000000000 +0000
+++ landscape-client-16.03/debian/landscape-client.postinst	2018-02-07 19:04:24.000000000 +0000
@@ -127,8 +127,16 @@
         USER_UPDATE_FLAG_FILE="$DATA_PATH/user-update-flag"
         install --owner=landscape /dev/null $USER_UPDATE_FLAG_FILE
         echo "This file indicates that the Landscape client needs to send updated user information to the server." >> $USER_UPDATE_FLAG_FILE
-    ;;
 
+        # To work around bug #1736576 we rewrite file-local landscape sources
+        # with the trusted flag, as they have no release file, thus are
+        # unsigned repositories. It exists while package profile is applying.
+        LANDSCAPE_INTERNAL_SOURCES=/etc/apt/sources.list.d/_landscape-internal-facade.list
+        if grep -q -e "^deb file:" $LANDSCAPE_INTERNAL_SOURCES; then
+            sed -i 's/^deb file:/deb [ trusted=yes ] file:/' $LANDSCAPE_INTERNAL_SOURCES
+        fi
+     ;;
+ 
     abort-upgrade|abort-remove|abort-deconfigure)
     ;;
 
diff -Nru landscape-client-16.03/debian/patches/series landscape-client-16.03/debian/patches/series
--- landscape-client-16.03/debian/patches/series	2018-01-23 15:49:18.000000000 +0000
+++ landscape-client-16.03/debian/patches/series	2018-02-07 18:47:28.000000000 +0000
@@ -6,3 +6,4 @@
 config-no-reregister-1618483.diff
 set-vm-info-to-kvm-for-aws-C5-instances.patch
 set-vm-info-to-kvm-for-digitalocean-instances.patch
+trusted-package-profiles-1736576.diff
diff -Nru landscape-client-16.03/debian/patches/trusted-package-profiles-1736576.diff landscape-client-16.03/debian/patches/trusted-package-profiles-1736576.diff
--- landscape-client-16.03/debian/patches/trusted-package-profiles-1736576.diff	1970-01-01 00:00:00.000000000 +0000
+++ landscape-client-16.03/debian/patches/trusted-package-profiles-1736576.diff	2018-02-07 19:04:24.000000000 +0000
@@ -0,0 +1,727 @@
+Description: Trust file-local repositories explicitely.
+ Behaviour of apt is now to verify all repository signatures.
+ Ephemeral "file://" repositories are created by landscape during
+ application of package profiles policies. Those local apt sources are now to
+ be flagged as trusted to avoid regression with new apt default.
+Author: Simon Poirier <simon.poirier@canonical.com>
+Origin: upstream, https://github.com/CanonicalLtd/landscape-client/commit/d640643a15414b0d8e4330179e11d5a6036a6e42
+Bug: https://bugs.launchpad.net/bugs/1736576
+Bug-Ubuntu: https://bugs.launchpad.net/bugs/1736576
+--- a/landscape/package/facade.py
++++ b/landscape/package/facade.py
+@@ -264,15 +264,21 @@
+         sources_dir = apt_pkg.config.find_dir("Dir::Etc::sourceparts")
+         return os.path.join(sources_dir, "_landscape-internal-facade.list")
+ 
+-    def add_channel_apt_deb(self, url, codename, components=None):
++    def add_channel_apt_deb(self, url, codename, components=None,
++                            trusted=None):
+         """Add a deb URL which points to a repository.
+ 
+         @param url: The base URL of the repository.
+         @param codename: The dist in the repository.
+         @param components: The components to be included.
++        @param trusted: Whether validation should be skipped (if local).
+         """
+         sources_file_path = self._get_internal_sources_list()
+-        sources_line = "deb %s %s" % (url, codename)
++        source_options = ""
++        if trusted is not None and url.startswith("file:"):
++            trusted_val = "yes" if trusted else "no"
++            source_options = "[ trusted={} ] ".format(trusted_val)
++        sources_line = "deb {}{} {}".format(source_options, url, codename)
+         if components:
+             sources_line += " %s" % " ".join(components)
+         if os.path.exists(sources_file_path):
+@@ -291,7 +297,9 @@
+         about the deb files.
+         """
+         self._create_packages_file(path)
+-        self.add_channel_apt_deb("file://%s" % path, "./", None)
++        # yakkety+ validate even file repository by default. deb dirs don't
++        # have a signed Release file but are local so they should be trusted.
++        self.add_channel_apt_deb("file://%s" % path, "./", None, trusted=True)
+ 
+     def clear_channels(self):
+         """Clear the channels that have been added through the facade.
+--- a/landscape/package/tests/test_facade.py
++++ b/landscape/package/tests/test_facade.py
+@@ -145,7 +145,8 @@
+         deb_dir = self.makeDir()
+         self._add_system_package("foo", version="1.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.5")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         self.assertEqual(
+             [("foo", "1.0"), ("foo", "1.5")],
+@@ -219,6 +220,38 @@
+             "deb http://example.com/ubuntu lucid main restricted\n",
+             sources_contents)
+ 
++    def test_add_channel_apt_deb_trusted(self):
++        """add_channel_apt_deb sets trusted option if trusted and local."""
++        # Don't override trust on unsigned/signed remotes.
++        self.facade.add_channel_apt_deb(
++            "http://example.com/ubuntu", "unsigned", ["main"], trusted=True)
++        self.facade.add_channel_apt_deb(
++            "http://example.com/ubuntu", "signed", ["main"], trusted=False)
++
++        # We explicitly trust local
++        self.facade.add_channel_apt_deb(
++            "file://opt/spam", "unsigned", ["main"], trusted=True)
++        # We explicitly distrust local (thus check gpg signatures)
++        self.facade.add_channel_apt_deb(
++            "file://opt/spam", "signed", ["main"], trusted=False)
++        # apt defaults (which is to check signatures on >xenial)
++        self.facade.add_channel_apt_deb(
++            "file://opt/spam", "default", ["main"])
++
++        list_filename = (
++            self.apt_root +
++            "/etc/apt/sources.list.d/_landscape-internal-facade.list")
++        sources_contents = read_file(list_filename)
++        self.assertEqual(
++            textwrap.dedent("""\
++            deb http://example.com/ubuntu unsigned main
++            deb http://example.com/ubuntu signed main
++            deb [ trusted=yes ] file://opt/spam unsigned main
++            deb [ trusted=no ] file://opt/spam signed main
++            deb file://opt/spam default main
++            """),
++            sources_contents)
++
+     def test_add_channel_deb_dir_adds_deb_channel(self):
+         """
+         C{add_channel_deb_dir()} adds a deb channel pointing to the
+@@ -397,7 +430,8 @@
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+         self._add_package_to_deb_dir(deb_dir, "bar")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         self.assertEqual(
+             ["bar", "foo"],
+@@ -412,7 +446,8 @@
+         """
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         new_facade = AptFacade(root=self.apt_root)
+         self._add_package_to_deb_dir(deb_dir, "bar")
+@@ -432,7 +467,8 @@
+         """
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         new_facade = AptFacade(root=self.apt_root)
+         self._add_package_to_deb_dir(deb_dir, "foo", version="2.0")
+@@ -450,7 +486,8 @@
+         """
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         self._add_package_to_deb_dir(deb_dir, "bar")
+         self._touch_packages_file(deb_dir)
+@@ -504,7 +541,8 @@
+ 
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.refetch_package_index = True
+         self.facade._cache.update = new_apt_update
+         self.facade.reload_channels(force_reload_binaries=True)
+@@ -525,7 +563,8 @@
+ 
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.refetch_package_index = False
+         self.facade._cache.update = new_apt_update
+         self.facade.reload_channels(force_reload_binaries=True)
+@@ -546,7 +585,8 @@
+ 
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.refetch_package_index = False
+         self.facade._cache.update = old_apt_update
+         self.facade.reload_channels(force_reload_binaries=True)
+@@ -885,7 +925,8 @@
+         """
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [package] = self.facade.get_packages()
+         self.assertFalse(self.facade.is_package_upgrade(package))
+@@ -898,7 +939,8 @@
+         deb_dir = self.makeDir()
+         self._add_system_package("foo", version="0.5")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [version_05, version_10] = sorted(self.facade.get_packages())
+         self.assertTrue(self.facade.is_package_upgrade(version_10))
+@@ -912,7 +954,8 @@
+         deb_dir = self.makeDir()
+         self._add_system_package("foo", version="1.5")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [version_10, version_15] = sorted(self.facade.get_packages())
+         self.assertFalse(self.facade.is_package_upgrade(version_10))
+@@ -927,7 +970,8 @@
+         deb_dir = self.makeDir()
+         self._add_system_package("foo", version="1.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [package] = self.facade.get_packages()
+         self.assertFalse(self.facade.is_package_upgrade(package))
+@@ -956,7 +1000,8 @@
+         self._add_system_package("foo", version="0.5")
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [version_05, version_10] = sorted(self.facade.get_packages())
+         self.assertFalse(self.facade.is_package_upgrade(version_10))
+@@ -978,7 +1023,8 @@
+         deb_dir = self.makeDir()
+         self._add_system_package("foo", version="1.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.5")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         self.assertEqual(
+             [("foo", "1.0"), ("foo", "1.5")],
+@@ -1012,7 +1058,8 @@
+         """
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1045,7 +1092,8 @@
+         """
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1070,7 +1118,8 @@
+         """
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1099,7 +1148,8 @@
+         self.facade.max_dpkg_retries = 1
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1128,7 +1178,8 @@
+         self.facade.max_dpkg_retries = 1
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1233,7 +1284,8 @@
+         """
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         foo = self.facade.get_packages_by_name("foo")[0]
+         self.facade.mark_install(foo)
+@@ -1268,7 +1320,8 @@
+             deb_dir, "bar",
+             control_fields={"Depends": "also-missing | also-lost (>= 1.0)",
+                             "Pre-Depends": "also-pre-missing | also-pre-lost"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [bar] = self.facade.get_packages_by_name("bar")
+@@ -1309,7 +1362,8 @@
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Depends": "bar"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         self.assertEqual(set(), self.facade._get_broken_packages())
+         self.assertEqual("", self.facade._get_unmet_dependency_info())
+@@ -1323,7 +1377,8 @@
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Depends": "bar"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1345,7 +1400,8 @@
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Pre-Depends": "bar"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1367,7 +1423,8 @@
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Depends": "bar (>= 1.0)"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1391,7 +1448,8 @@
+         self._add_package_to_deb_dir(deb_dir, "bar", version="0.5")
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Depends": "bar (>= 1.0)"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [bar] = self.facade.get_packages_by_name("bar")
+@@ -1418,7 +1476,8 @@
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Depends": "bar (>= 3.0)"})
+         self._add_package_to_deb_dir(deb_dir, "bar", version="2.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [bar1, bar2] = sorted(self.facade.get_packages_by_name("bar"))
+@@ -1445,7 +1504,8 @@
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Depends": "bar (>= 3.0)"})
+         self._add_package_to_deb_dir(deb_dir, "bar", version="2.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [bar1, bar2] = sorted(self.facade.get_packages_by_name("bar"))
+@@ -1474,7 +1534,8 @@
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Depends": "bar (>= 3.0)"})
+         self._add_package_to_deb_dir(deb_dir, "bar", version="1.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [bar1, bar2] = sorted(self.facade.get_packages_by_name("bar"))
+@@ -1500,7 +1561,8 @@
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Depends": "bar | baz (>= 1.0)"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1524,7 +1586,8 @@
+         self._add_system_package("foo")
+         self._add_package_to_deb_dir(
+             deb_dir, "bar", control_fields={"Conflicts": "foo"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [bar] = self.facade.get_packages_by_name("bar")
+@@ -1551,7 +1614,8 @@
+             deb_dir, "foo", control_fields={"Depends": "bar"})
+         self._add_package_to_deb_dir(
+             deb_dir, "bar", control_fields={"Breaks": "foo"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [bar] = self.facade.get_packages_by_name("bar")
+@@ -1577,7 +1641,8 @@
+             deb_dir, "bar",
+             control_fields={"Conflicts": "foo, baz", "Breaks": "foo, baz"})
+         self._add_package_to_deb_dir(deb_dir, "baz")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [bar] = self.facade.get_packages_by_name("bar")
+@@ -1606,7 +1671,8 @@
+             deb_dir, "bar",
+             control_fields={"Conflicts": "foo, baz", "Breaks": "foo, baz"})
+         self._add_system_package("baz")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [bar] = self.facade.get_packages_by_name("bar")
+@@ -1637,7 +1703,8 @@
+         self._add_package_to_deb_dir(
+             deb_dir, "foo",
+             control_fields={"Depends": "there1, missing1, there2 | missing2"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1660,7 +1727,8 @@
+             deb_dir, "foo", control_fields={"Depends": "bar"})
+         self._add_package_to_deb_dir(
+             deb_dir, "another-foo", control_fields={"Depends": "another-bar"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [another_foo] = self.facade.get_packages_by_name("another-foo")
+@@ -1724,7 +1792,8 @@
+         """
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1743,7 +1812,8 @@
+         """
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1769,7 +1839,8 @@
+         self._add_system_package("bar", version="1.0")
+         self._add_package_to_deb_dir(deb_dir, "bar", version="1.5")
+         self._add_system_package("baz")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self._add_system_package("quux", version="1.0")
+         self._add_system_package("wibble", version="1.0")
+         self.facade.reload_channels()
+@@ -1799,7 +1870,8 @@
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Depends": "bar"})
+         self._add_package_to_deb_dir(deb_dir, "bar")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -1831,7 +1903,8 @@
+         deb_dir = self.makeDir()
+         self._add_system_package("foo", version="1.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.5")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         foo_10 = sorted(self.facade.get_packages_by_name("foo"))[0]
+         self.facade.mark_global_upgrade()
+@@ -1858,7 +1931,8 @@
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="2.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         foo1, foo2 = sorted(self.facade.get_packages_by_name("foo"))
+         self.assertEqual(foo2, foo1.package.candidate)
+@@ -1896,7 +1970,8 @@
+             deb_dir, "single-arch", architecture="amd64", version="2.0")
+         self._add_package_to_deb_dir(
+             deb_dir, "single-arch", architecture="i386", version="2.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+ 
+         multi_arch1, multi_arch2 = sorted(
+@@ -1941,7 +2016,8 @@
+         self._add_package_to_deb_dir(
+             deb_dir, "multi-arch", architecture="i386", version="2.0",
+             control_fields={"Multi-Arch": "same"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+ 
+         multi_arch1, multi_arch2 = sorted(
+@@ -1971,7 +2047,8 @@
+         self._add_system_package("bar")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="2.0")
+         self._add_package_to_deb_dir(deb_dir, "baz")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         foo1, foo2 = sorted(self.facade.get_packages_by_name("foo"))
+         self.facade.mark_global_upgrade()
+@@ -1991,7 +2068,8 @@
+         self._add_system_package("foo", version="1.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="2.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="3.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         foo1, foo2, foo3 = sorted(self.facade.get_packages_by_name("foo"))
+         self.assertEqual(foo3, foo1.package.candidate)
+@@ -2010,7 +2088,8 @@
+         self._add_system_package("foo", version="3.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="2.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         foo3 = sorted(self.facade.get_packages_by_name("foo"))[-1]
+         self.assertEqual(foo3, foo3.package.candidate)
+@@ -2026,7 +2105,8 @@
+         self._add_package_to_deb_dir(deb_dir, "auto", version="2.0")
+         self._add_system_package("noauto", version="1.0")
+         self._add_package_to_deb_dir(deb_dir, "noauto", version="2.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         auto1, auto2 = sorted(self.facade.get_packages_by_name("auto"))
+         noauto1, noauto2 = sorted(self.facade.get_packages_by_name("noauto"))
+@@ -2085,7 +2165,8 @@
+             "broken", control_fields={"Depends": "missing"})
+         self._add_package_to_deb_dir(deb_dir, "foo")
+         self._add_package_to_deb_dir(deb_dir, "missing")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_install(foo)
+@@ -2107,7 +2188,8 @@
+             deb_dir, "foo", control_fields={"Depends": "bar"})
+         self._add_package_to_deb_dir(deb_dir, "bar")
+         self._add_package_to_deb_dir(deb_dir, "missing")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [bar] = self.facade.get_packages_by_name("bar")
+@@ -2126,7 +2208,8 @@
+             "broken", control_fields={"Depends": "missing"})
+         self._add_system_package("foo")
+         self._add_package_to_deb_dir(deb_dir, "missing")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         self.facade.mark_remove(foo)
+@@ -2151,7 +2234,8 @@
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Depends": "really-missing"})
+         self._add_package_to_deb_dir(deb_dir, "missing")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [broken] = self.facade.get_packages_by_name("broken")
+         [foo] = self.facade.get_packages_by_name("foo")
+@@ -2218,7 +2302,8 @@
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", control_fields={"Depends": "bar"})
+         self._add_package_to_deb_dir(deb_dir, "bar")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo] = self.facade.get_packages_by_name("foo")
+         [bar] = self.facade.get_packages_by_name("bar")
+@@ -2235,7 +2320,8 @@
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="2.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo1, foo2] = sorted(self.facade.get_packages_by_name("foo"))
+         self.assertEqual(foo1.package, foo2.package)
+@@ -2259,7 +2345,8 @@
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="2.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo1, foo2] = sorted(self.facade.get_packages_by_name("foo"))
+         self.assertEqual(foo1.package, foo2.package)
+@@ -2301,7 +2388,8 @@
+         self._add_system_package("foo", version="1.0")
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo", version="2.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo1, foo2] = sorted(self.facade.get_packages_by_name("foo"))
+         self.assertEqual(foo1.package, foo2.package)
+@@ -2324,7 +2412,8 @@
+         self._add_system_package("foo", version="1.0")
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo", version="2.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo1, foo2] = sorted(self.facade.get_packages_by_name("foo"))
+         self.assertEqual(foo1.package, foo2.package)
+@@ -2348,7 +2437,8 @@
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.0")
+         self._add_package_to_deb_dir(deb_dir, "foo", version="3.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo1, foo2] = sorted(self.facade.get_packages_by_name("foo"))[:2]
+         self.assertEqual(foo1.package, foo2.package)
+@@ -2374,7 +2464,8 @@
+         self._add_package_to_deb_dir(
+             deb_dir, "foo", version="1.5", control_fields={"Depends": "bar"})
+         self._add_package_to_deb_dir(deb_dir, "bar")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         foo_10, foo_15 = sorted(self.facade.get_packages_by_name("foo"))
+         [bar] = self.facade.get_packages_by_name("bar")
+@@ -2432,7 +2523,8 @@
+         self._add_system_package("bar", version="1.0")
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "bar", version="2.0")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         bar_1, bar_2 = sorted(self.facade.get_packages_by_name("bar"))
+         self.facade.mark_install(bar_2)
+@@ -2453,7 +2545,8 @@
+             control_fields={"Status": "hold ok installed"})
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.5")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo_10, foo_15] = sorted(self.facade.get_packages_by_name("foo"))
+         self.facade.mark_global_upgrade()
+@@ -2477,7 +2570,8 @@
+         self._add_package_to_deb_dir(
+             deb_dir, "bar", version="2.0",
+             control_fields={"Depends": "foo (>> 1.0)"})
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [foo_1, foo_2] = sorted(self.facade.get_packages_by_name("foo"))
+         [bar_1, bar_2] = sorted(self.facade.get_packages_by_name("bar"))
+@@ -2514,7 +2608,8 @@
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "foo", version="1.5")
+         self._add_package_to_deb_dir(deb_dir, "bar", version="1.5")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         foo_10 = sorted(self.facade.get_packages_by_name("foo"))[0]
+         self.assertEqual([foo_10], self.facade.get_locked_packages())
+@@ -2647,7 +2742,8 @@
+         self._add_system_package("foo")
+         deb_dir = self.makeDir()
+         self._add_package_to_deb_dir(deb_dir, "bar")
+-        self.facade.add_channel_apt_deb("file://%s" % deb_dir, "./")
++        self.facade.add_channel_apt_deb(
++            "file://%s" % deb_dir, "./", trusted=True)
+         self.facade.reload_channels()
+         [bar] = self.facade.get_packages_by_name("bar")
+         self.facade.mark_remove_hold(bar)