Ich habe meine XML-Datei als

 <?xml version="1.0" encoding="ISO-8859-1"?>
 <Info>
 <Pan>123</Pan>
 <Name>qwe</Name>
 <Email>qwe</Email>
 <City>qwe</City>
 <State>qwe</State>
 <AssessmentYear>2012</AssessmentYear>
 <MobileNo>1234</MobileNo>
 <Income-Salary>1234</Income-Salary>
 <Income-Other>1234</Income-Other>
 <TotalAmount>122</TotalAmount>
<Signature> 
<SignedInfo>
 <CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
 <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>
 <Reference URI=""><Transforms><Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><Transform Algorithm="http://www.w3.org/TR/1999/REC-xslt-19991116"><xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="text"/>
<xsl:template match="/">
Pan : <xsl:copy-of select="//Pan"/>

MobileNo : <xsl:copy-of select="//MobileNo"/>

TotalAmount : <xsl:copy-of select="//TotalAmount"/>
</xsl:template>
</xsl:stylesheet></Transform></Transforms><DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><DigestValue>FgbIIimTLIbd0Zpvq1zDrZse6aJg5bAE1/Q58cEkEvk=</DigestValue></Reference>
 </SignedInfo>
<SignatureValue>dy4QDco5NhXResncu0tUG5ylujDn9siIQSHjuX5HxH2gs70LpsO3KDWNvDXjpgkIySYfzJ/FdC6C
trkSySWRjhObqI8cbcP5VU/nL8pP21+3CO+gF1k884aeX3felpRy0FBBMTYBknQTunWCHvpHk927
ZHGvm6Hiej7iBKr3e1k=</SignatureValue>
</Signature>
</Info>

Meine Schemadateien für diese XML-Datei lauten wie folgt:c1.xsd)

<?xml version="1.0" encoding="ISO-8859-1" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
<xs:import namespace="http://www.w3.org/2000/09/xmldsig#" schemaLocation="C:\\xml\\c2.xsd"/>
<xs:element name="Info">
  <xs:complexType>

  <xs:sequence>
      <xs:element name="Pan" type="xs:string"/>
      <xs:element name="Name" type="xs:string"/>
      <xs:element name="Email" type="xs:string"/>
      <xs:element name="City" type="xs:string"/>
      <xs:element name="State" type="xs:string"/>
      <xs:element name="AssessmentYear" type="xs:gYear"/>
      <xs:element name="MobileNo" type="xs:unsignedLong"/>
      <xs:element name="Income-Salary" type="xs:unsignedLong"/>
      <xs:element name="Income-Other" type="xs:unsignedLong"/>
      <xs:element name="TotalAmount" type="xs:unsignedLong"/>
      <xs:element ref="ds:Signature"/>
 </xs:sequence>
  </xs:complexType>
</xs:element>
</xs:schema>

c2.xsd (bearbeitet)

 <?xml version="1.0" encoding="ISO-8859-1" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.w3.org/2000/09/xmldsig#">
<xs:element name="Signature">
     <xs:complexType>
      <xs:sequence>
        <xs:element name="SignedInfo">
         <xs:complexType>
          <xs:sequence>
             <xs:element name="CanonicalizationMethod">
              <xs:complexType>
               <xs:attribute name="Algorithm" type="xs:string" use="required"/>
              </xs:complexType>
             </xs:element>
             <xs:element name="SignatureMethod">
               <xs:complexType>
                 <xs:attribute name="Algorithm" type="xs:string" use="required"/>
               </xs:complexType>
             </xs:element>                
            <xs:element name="Reference">
             <xs:complexType>
               <xs:attribute name="URI" type="xs:string"/>
               <xs:all>
               <xs:element name="Transforms">
                 <xs:complexType>
                   <xs:sequence>
                     <xs:element name="Transform" type="xs:string">
                       <xs:complexType>
                         <xs:attribute name="Algorithm" type="xs:string" use="required"/>
                       </xs:complexType>
                      </xs:element>
                   </xs:sequence>
                 </xs:complexType>
               </xs:element>
               <xs:element name="DigestMethod">
                 <xs:complexType>
                   <xs:attribute name="Algorithm" type="xs:string" use="required"/>
                 </xs:complexType>
               </xs:element>
               <xs:element name="DigestValue" type="xs:hexBinary"/>
               </xs:all>
             </xs:complexType>
            </xs:element>
            </xs:sequence>
         </xs:complexType> 
        </xs:element> 
       <xs:element name="SignatureValue" type="xs:string"/>
      </xs:sequence>
     </xs:complexType>
</xs:element>
</xs:schema>

Wenn ich meine XML-Datei validiere, erhalte ich die folgende Ausnahme

org.xml.sax.SAXParseException; systemId: file:/C://xml//c2.xsd; lineNumber: 22;
columnNumber: 37; s4s-elt-invalid-content.1: The content of '#AnonType_Reference
SignedInfoSignature' is invalid.  Element 'element' is invalid, misplaced, or oc
curs too often.

Ich kann nicht herausfinden, wo ich falsch liege? Kann jemand sagen, wo genau der Fehler in meinem Code ist?
Fehler nach Edit 1

org.xml.sax.SAXParseException; systemId: file:/C://xml//c2.xsd; lineNumber: 22;
columnNumber: 15; s4s-elt-invalid-content.1: The content of '#AnonType_Reference
SignedInfoSignature' is invalid.  Element 'all' is invalid, misplaced, or occurs
 too often.