diff --git a/aif.xsd b/aif.xsd
index a42639a..18cce0e 100644
--- a/aif.xsd
+++ b/aif.xsd
@@ -472,14 +472,6 @@
                                                 <xs:attribute name="id" type="xs:ID" use="required"/>
                                                 <xs:attribute name="name" type="aif:t_nonempty" use="required"/>
                                                 <xs:attribute name="source" type="xs:IDREF" use="required"/>
-                                                <!-- It's too much of a PITA to validate the next three.
-                                                     We do it in runtime. -->
-                                                <xs:attribute name="cipher" type="aif:t_nonempty"
-                                                              use="optional" default="aes-xtc-plain64"/>
-                                                <xs:attribute name="keySize" type="xs:positiveInteger"
-                                                              use="optional" default="512"/>
-                                                <xs:attribute name="hash" type="aif:t_nonempty"
-                                                              use="optional" default="sha512"/>
                                             </xs:complexType>
                                         </xs:element>
                                     </xs:sequence>