2.2.1.3.7 SIGNATURE_VALUE

The SIGNATURE_VALUE complex type contains a signature, as specified in section 2.2.1.6. The MSDRM signature is computed using the methods specified in section 2.2.1.6. The string is base64 encoded as specified in [MS-DRM] section 2.2.1.1.

 <xs:complexType name="SIGNATURE_VALUE">
   <xs:simpleContent>
     <xs:extension base="xs:string">
       <xs:attribute name ="private" type="xs:int" use="optional"/>
     </xs:extension>
   </xs:simpleContent>
 </xs:complexType>

private: An optional attribute that provides metadata about the signature value. When present, MUST be set to "1", indicating that the value is kept private.