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diff --git a/spec/Channel_Interface_Securable.xml b/spec/Channel_Interface_Securable.xml
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+<?xml version="1.0" ?>
+<node name="/Channel_Interface_Securable"
+  xmlns:tp="http://telepathy.freedesktop.org/wiki/DbusSpec#extensions-v0">
+  <tp:copyright>Copyright (C) 2010 Collabora Ltd.</tp:copyright>
+
+  <tp:license xmlns="http://www.w3.org/1999/xhtml">
+    <p>This library is free software; you can redistribute it and/or
+      modify it under the terms of the GNU Lesser General Public
+      License as published by the Free Software Foundation; either
+      version 2.1 of the License, or (at your option) any later version.</p>
+
+    <p>This library is distributed in the hope that it will be useful,
+      but WITHOUT ANY WARRANTY; without even the implied warranty of
+      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+      Lesser General Public License for more details.</p>
+
+    <p>You should have received a copy of the GNU Lesser General Public
+      License along with this library; if not, write to the Free Software
+      Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+      USA.</p>
+  </tp:license>
+
+  <interface name="org.freedesktop.Telepathy.Channel.Interface.Securable">
+    <tp:added version="0.21.5">as stable API</tp:added>
+    <tp:requires interface="org.freedesktop.Telepathy.Channel"/>
+
+    <tp:docstring xmlns="http://www.w3.org/1999/xhtml">
+      <p>This interface exists to expose security information about
+        <tp:dbus-ref namespace="ofdT">Channel</tp:dbus-ref>s. The two
+        properties are sometimes immutable and can be used to make
+        decisions on how cautious to be about transferring sensitive
+        data. The special case of <tp:dbus-ref
+        namespace="ofdT.Channel.Type">ServerAuthentication</tp:dbus-ref>
+        channels is one example of where the two properties are
+        immutable.</p>
+
+      <p>For example, clients MAY use these properties to decide
+        whether the <code>PLAIN</code> mechanism is acceptable for a
+        <tp:dbus-ref
+        namespace="ofdT.Channel.Interface">SASLAuthentication</tp:dbus-ref>
+        channel.</p>
+    </tp:docstring>
+
+    <property name="Encrypted"
+      tp:name-for-bindings="Encrypted" type="b"
+      access="read" tp:immutable="sometimes">
+      <tp:docstring xmlns="http://www.w3.org/1999/xhtml">
+        <p>True if this channel occurs over an encrypted
+          connection. This <strong>does not</strong> imply that steps
+          have been taken to avoid man-in-the-middle attacks.</p>
+
+        <tp:rationale>
+          <p>For future support for <a
+              href="http://tools.ietf.org/html/rfc5056">RFC 5056 Channel
+              Binding</a> it is desirable to be able to use some SASL
+            mechanisms over an encrypted connection to an unverified peer,
+            which can prove that it is the desired destination during
+            the SASL negotiation.</p>
+        </tp:rationale>
+      </tp:docstring>
+    </property>
+
+    <property name="Verified"
+      tp:name-for-bindings="Verified" type="b"
+      access="read" tp:immutable="sometimes">
+      <tp:docstring xmlns="http://www.w3.org/1999/xhtml">
+        <p>True if this channel occurs over a connection that is
+          protected against tampering, and has been verified to be with
+          the desired destination: for instance, one where TLS was
+          previously negotiated, and the TLS certificate has been
+          verified against a configured certificate authority or
+          accepted by the user.</p>
+      </tp:docstring>
+    </property>
+
+  </interface>
+</node>
+<!-- vim:set sw=2 sts=2 et ft=xml: -->