<?xml version="1.0" encoding="utf-8"?>
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<xs:schema xmlns:xs='http://www.w3.org/2001/XMLSchema'
xmlns:wsse='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd'
xmlns:wsu='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd'
xmlns:wsp='http://schemas.xmlsoap.org/ws/2004/09/policy' 
xmlns:wsa='http://www.w3.org/2005/08/addressing'
xmlns:wst='http://docs.oasis-open.org/ws-sx/ws-trust/200512/'
targetNamespace='http://docs.oasis-open.org/ws-sx/ws-trust/200512/'
elementFormDefault='qualified' >

  <xs:import namespace='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd' 
			 schemaLocation='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd' />
  <xs:import namespace='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd' 
			 schemaLocation='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd' />
  <xs:import namespace='http://schemas.xmlsoap.org/ws/2004/09/policy' 
			 schemaLocation='http://schemas.xmlsoap.org/ws/2004/09/policy/ws-policy.xsd' />
  <xs:import namespace='http://www.w3.org/2005/08/addressing' 
			 schemaLocation='http://www.w3.org/2006/03/addressing/ws-addr.xsd' />

  <!-- WS-Trust Section 3.1 -->
  <xs:element name='RequestSecurityToken' type='wst:RequestSecurityTokenType' />
  <xs:complexType name='RequestSecurityTokenType' >
    <xs:annotation>
      <xs:documentation>
        Actual content model is non-deterministic, hence wildcard. The following shows intended content model:

        &lt;xs:element ref='wst:TokenType' minOccurs='0' />
        &lt;xs:element ref='wst:RequestType' />
        &lt;xs:element ref='wsp:AppliesTo' minOccurs='0' />
        &lt;xs:element ref='wst:Claims' minOccurs='0' />
        &lt;xs:element ref='wst:Entropy' minOccurs='0' />
        &lt;xs:element ref='wst:Lifetime' minOccurs='0' />
        &lt;xs:element ref='wst:AllowPostdating' minOccurs='0' />
        &lt;xs:element ref='wst:Renewing' minOccurs='0' />
        &lt;xs:element ref='wst:OnBehalfOf' minOccurs='0' />
        &lt;xs:element ref='wst:Issuer' minOccurs='0' />
        &lt;xs:element ref='wst:AuthenticationType' minOccurs='0' />
        &lt;xs:element ref='wst:KeyType' minOccurs='0' />
        &lt;xs:element ref='wst:KeySize' minOccurs='0' />
        &lt;xs:element ref='wst:SignatureAlgorithm' minOccurs='0' />
        &lt;xs:element ref='wst:Encryption' minOccurs='0' />
        &lt;xs:element ref='wst:EncryptionAlgorithm' minOccurs='0' />
        &lt;xs:element ref='wst:CanonicalizationAlgorithm' minOccurs='0' />
        &lt;xs:element ref='wst:ProofEncryption' minOccurs='0' />
        &lt;xs:element ref='wst:UseKey' minOccurs='0' />
        &lt;xs:element ref='wst:SignWith' minOccurs='0' />
        &lt;xs:element ref='wst:EncryptWith' minOccurs='0' />
        &lt;xs:element ref='wst:DelegateTo' minOccurs='0' />
        &lt;xs:element ref='wst:Forwardable' minOccurs='0' />
        &lt;xs:element ref='wst:Delegatable' minOccurs='0' />
        &lt;xs:element ref='wsp:Policy' minOccurs='0' />
        &lt;xs:element ref='wsp:PolicyReference' minOccurs='0' />
        &lt;xs:any namespace='##other' processContents='lax' minOccurs='0' maxOccurs='unbounded' />

      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' minOccurs='0' maxOccurs='unbounded' />
    </xs:sequence>
    <xs:attribute name='Context' type='xs:anyURI' use='optional' />
    <xs:anyAttribute namespace='##other' processContents='lax' />
  </xs:complexType>

  <xs:element name='TokenType' type='xs:anyURI' />

  <xs:element name='RequestType' type='wst:RequestTypeOpenEnum' />

  <xs:simpleType name='RequestTypeOpenEnum' >
    <xs:union memberTypes='wst:RequestTypeEnum xs:anyURI' />
  </xs:simpleType>

  <xs:simpleType name='RequestTypeEnum' >
    <xs:restriction base='xs:anyURI' >
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/Issue' />
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/Renew' />
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/Cancel' />
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/STSCancel' />
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/Validate' />
    </xs:restriction>
  </xs:simpleType>

  <!-- WS-Trust Section 3.2 -->
  <xs:element name='RequestSecurityTokenResponse' type='wst:RequestSecurityTokenResponseType' />
  <xs:complexType name='RequestSecurityTokenResponseType' >
    <xs:annotation>
      <xs:documentation>
        Actual content model is non-deterministic, hence wildcard. The following shows intended content model:

        &lt;xs:element ref='wst:TokenType' minOccurs='0' />
        &lt;xs:element ref='wst:RequestType' />
        &lt;xs:element ref='wst:RequestedSecurityToken'  minOccurs='0' />
        &lt;xs:element ref='wsp:AppliesTo' minOccurs='0' />
        &lt;xs:element ref='wst:RequestedAttachedReference' minOccurs='0' />
        &lt;xs:element ref='wst:RequestedUnattachedReference' minOccurs='0' />
        &lt;xs:element ref='wst:RequestedProofToken' minOccurs='0' />
        &lt;xs:element ref='wst:Entropy' minOccurs='0' />
        &lt;xs:element ref='wst:Lifetime' minOccurs='0' />
        &lt;xs:element ref='wst:Status' minOccurs='0' />
        &lt;xs:element ref='wst:AllowPostdating' minOccurs='0' />
        &lt;xs:element ref='wst:Renewing' minOccurs='0' />
        &lt;xs:element ref='wst:OnBehalfOf' minOccurs='0' />
        &lt;xs:element ref='wst:Issuer' minOccurs='0' />
        &lt;xs:element ref='wst:AuthenticationType' minOccurs='0' />
        &lt;xs:element ref='wst:Authenticator' minOccurs='0' />
        &lt;xs:element ref='wst:KeyType' minOccurs='0' />
        &lt;xs:element ref='wst:KeySize' minOccurs='0' />
        &lt;xs:element ref='wst:SignatureAlgorithm' minOccurs='0' />
        &lt;xs:element ref='wst:Encryption' minOccurs='0' />
        &lt;xs:element ref='wst:EncryptionAlgorithm' minOccurs='0' />
        &lt;xs:element ref='wst:CanonicalizationAlgorithm' minOccurs='0' />
        &lt;xs:element ref='wst:ProofEncryption' minOccurs='0' />
        &lt;xs:element ref='wst:UseKey' minOccurs='0' />
        &lt;xs:element ref='wst:SignWith' minOccurs='0' />
        &lt;xs:element ref='wst:EncryptWith' minOccurs='0' />
        &lt;xs:element ref='wst:DelegateTo' minOccurs='0' />
        &lt;xs:element ref='wst:Forwardable' minOccurs='0' />
        &lt;xs:element ref='wst:Delegatable' minOccurs='0' />
        &lt;xs:element ref='wsp:Policy' minOccurs='0' />
        &lt;xs:element ref='wsp:PolicyReference' minOccurs='0' />
        &lt;xs:any namespace='##other' processContents='lax' minOccurs='0' maxOccurs='unbounded' />

      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' minOccurs='0' maxOccurs='unbounded' />
    </xs:sequence>
    <xs:attribute name='Context' type='xs:anyURI' use='optional' />
    <xs:anyAttribute namespace='##other' processContents='lax' />
  </xs:complexType>

  <xs:element name='RequestedSecurityToken' type='wst:RequestedSecurityTokenType' />
  <xs:complexType name='RequestedSecurityTokenType' >
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' />
    </xs:sequence>
  </xs:complexType>

  <!-- WS-Trust Section 3.3 -->
  <xs:element name='BinarySecret' type='wst:BinarySecretType' />
  <xs:complexType name='BinarySecretType' >
    <xs:simpleContent>
      <xs:extension base='xs:base64Binary' >
        <xs:attribute name='Type' type='wst:BinarySecretTypeOpenEnum' use='optional' />
        <xs:anyAttribute namespace='##other' processContents='lax' />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name='BinarySecretTypeEnum' >
    <xs:restriction base='xs:anyURI' >
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/AsymmetricKey' />
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/SymmetricKey' />
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/Nonce' />
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name='BinarySecretTypeOpenEnum' >
    <xs:union memberTypes='wst:BinarySecretTypeEnum xs:anyURI' />
  </xs:simpleType>


  <!-- WS-Trust Section 4.1 -->
  <xs:element name='Claims' type='wst:ClaimsType' />
  <xs:complexType name='ClaimsType' >
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' minOccurs='0' maxOccurs='unbounded' />
    </xs:sequence>
    <xs:attribute name='Dialect' type='xs:anyURI' use='optional' />
    <xs:anyAttribute namespace='##other' processContents='lax' />
  </xs:complexType>

  <xs:element name='Entropy' type='wst:EntropyType' />
  <xs:complexType name='EntropyType' >
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' minOccurs='0' maxOccurs='unbounded' />
    </xs:sequence>
    <xs:anyAttribute namespace='##other' processContents='lax' />
  </xs:complexType>

  <xs:element name='Lifetime' type='wst:LifetimeType' />
  <xs:complexType name='LifetimeType' >
    <xs:sequence>
      <xs:element ref='wsu:Created' minOccurs='0' />
      <xs:element ref='wsu:Expires' minOccurs='0' />
    </xs:sequence>
  </xs:complexType>

  <!-- WS-Trust Section 4.2 -->
  <xs:element name='RequestSecurityTokenCollection' type='wst:RequestSecurityTokenCollectionType' />
  <xs:complexType name='RequestSecurityTokenCollectionType' >
    <xs:annotation>
      <xs:documentation>
        The RequestSecurityTokenCollection (RSTC) element is used to provide multiple RST requests. 
        One or more RSTR elements in an RSTRC element are returned in the response to the RequestSecurityTokenCollection.
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='RequestSecurityToken' type='wst:RequestSecurityTokenType' minOccurs='2' maxOccurs='unbounded'/>
    </xs:sequence>
  </xs:complexType>

  <xs:element name='RequestSecurityTokenResponseCollection' type='wst:RequestSecurityTokenResponseCollectionType' />
  <xs:complexType name='RequestSecurityTokenResponseCollectionType' >
    <xs:annotation>
      <xs:documentation>
        The &lt;wst:RequestSecurityTokenResponseCollection> element (RSTRC) MUST be used to return a security token or 
        response to a security token request on the final response.
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element ref='wst:RequestSecurityTokenResponse' minOccurs='1' maxOccurs='unbounded' />
    </xs:sequence>
    <xs:anyAttribute namespace='##other' processContents='lax' />
  </xs:complexType>

  <!-- WS-Trust Section 4.3 -->
  <xs:element name='ComputedKey' type='wst:ComputedKeyOpenEnum' />
  <xs:simpleType name='ComputedKeyEnum' >
    <xs:restriction base='xs:anyURI' >
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/CK/PSHA1' />
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/CK/HASH' />
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name='ComputedKeyOpenEnum' >
    <xs:union memberTypes='wst:ComputedKeyEnum xs:anyURI' />
  </xs:simpleType>

  <xs:element name='RequestedAttachedReference' type='wst:RequestedReferenceType' />
  <xs:element name='RequestedUnattachedReference' type='wst:RequestedReferenceType' />
  <xs:complexType name='RequestedReferenceType' >
    <xs:sequence>
      <xs:element ref='wsse:SecurityTokenReference' />
    </xs:sequence>
  </xs:complexType>

  <xs:element name='RequestedProofToken' type='wst:RequestedProofTokenType' />
  <xs:complexType name='RequestedProofTokenType' >
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' />
    </xs:sequence>
  </xs:complexType>

  <!-- WS-Trust Section 6.4 -->
  <xs:element name='IssuedTokens' type='wst:RequestSecurityTokenResponseCollectionType' />

  <!-- WS-Trust Section 5 -->
  <xs:element name='RenewTarget' type='wst:RenewTargetType' />
  <xs:complexType name='RenewTargetType' >
    <xs:sequence>
      <xs:any namespace='##other' minOccurs='1' maxOccurs='1' />
    </xs:sequence>
  </xs:complexType>

  <xs:element name='AllowPostdating' type='wst:AllowPostdatingType' />
  <xs:complexType name='AllowPostdatingType' />

  <xs:element name='Renewing' type='wst:RenewingType' />
  <xs:complexType name='RenewingType' >
    <xs:attribute name='Allow' type='xs:boolean' use='optional' />
    <xs:attribute name='OK' type='xs:boolean' use='optional' />
  </xs:complexType>

  <!-- WS-Trust Section 6 -->
  <xs:element name='CancelTarget' type='wst:CancelTargetType' />
  <xs:complexType name='CancelTargetType' >
    <xs:sequence>
      <xs:any namespace='##other' minOccurs='1' maxOccurs='1' />
    </xs:sequence>
  </xs:complexType>

  <xs:element name='RequestedTokenCancelled' type='wst:RequestedTokenCancelledType' />
  <xs:complexType name='RequestedTokenCancelledType' />

  <!-- WS-Trust Section 7 -->
  <xs:element name='ValidateTarget' type='wst:ValidateTargetType' />
  <xs:complexType name='ValidateTargetType' >
    <xs:sequence>
      <xs:any namespace='##other' minOccurs='1' maxOccurs='1' />
    </xs:sequence>
  </xs:complexType>

  <xs:element name='Status' type='wst:StatusType' />
  <xs:complexType name='StatusType' >
    <xs:sequence>
      <xs:element name='Code' type='wst:StatusCodeOpenEnum' />
      <xs:element name='Reason' type='xs:string' minOccurs='0' />
    </xs:sequence>
  </xs:complexType>

  <xs:simpleType name='StatusCodeEnum' >
    <xs:restriction base='xs:anyURI' >
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/status/valid' />
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/status/invalid' />
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name='StatusCodeOpenEnum' >
    <xs:union memberTypes='wst:StatusCodeEnum xs:anyURI' />
  </xs:simpleType>

  <!-- WS-Trust Section 8.2 -->
  <xs:element name='SignChallenge' type='wst:SignChallengeType' />
  <xs:element name='SignChallengeResponse' type='wst:SignChallengeType' />
  <xs:complexType name='SignChallengeType' >
    <xs:sequence>
      <xs:element ref='wst:Challenge' />
      <xs:any namespace='##any' processContents='lax' minOccurs='0' maxOccurs='unbounded' />
    </xs:sequence>
    <xs:anyAttribute namespace='##any' processContents='lax' />
  </xs:complexType>

  <xs:element name='Challenge' type='xs:string'/>


  <!-- WS-Trust Section 8.3 -->
  <xs:element name='BinaryExchange' type='wst:BinaryExchangeType' />
  <xs:complexType name='BinaryExchangeType' >
    <xs:simpleContent>
      <xs:extension base='xs:string' >
        <xs:attribute name='ValueType' type='xs:anyURI' use='required' />
        <xs:attribute name='EncodingType' type='xs:anyURI' use='required' />
        <xs:anyAttribute namespace='##other' processContents='lax' />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <!-- WS-Trust Section 8.4 -->
  <xs:element name='RequestKET' type='wst:RequestKETType' />
  <xs:complexType name='RequestKETType' />

  <xs:element name='KeyExchangeToken' type='wst:KeyExchangeTokenType' />
  <xs:complexType name='KeyExchangeTokenType' >
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' minOccurs='0' maxOccurs='unbounded' />
    </xs:sequence>
  </xs:complexType>

  <!-- WS-Trust Section 8.9 -->
  <xs:element name='Authenticator' type='wst:AuthenticatorType' />
  <xs:complexType name='AuthenticatorType' >
    <xs:sequence>
      <xs:element ref='wst:CombinedHash' minOccurs='0' />
      <xs:any namespace='##other' processContents='lax' minOccurs='0' maxOccurs='unbounded' />
    </xs:sequence>
  </xs:complexType>

  <xs:element name='CombinedHash' type='xs:base64Binary' />

  <!-- WS-Trust Section 9.1 -->
  <xs:element name='OnBehalfOf' type='wst:OnBehalfOfType' />
  <xs:complexType name='OnBehalfOfType' >
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' />
    </xs:sequence>
  </xs:complexType>

  <xs:element name='Issuer' type='wsa:EndpointReferenceType' />

  <!-- WS-Trust Section 9.2 -->
  <xs:element name='AuthenticationType' type='xs:anyURI' />

  <xs:element name='KeyType' type='wst:KeyTypeOpenEnum' />
  <xs:simpleType name='KeyTypeEnum' >
    <xs:restriction base='xs:anyURI' >
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/PublicKey' />
      <xs:enumeration value='http://docs.oasis-open.org/ws-sx/ws-trust/200512/SymmetricKey' />
      <xs:enumeration value='http://docs.oasis-open.org/wssx/wstrust/200512/Bearer' />
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name='KeyTypeOpenEnum' >
    <xs:union memberTypes='wst:KeyTypeEnum xs:anyURI' />
  </xs:simpleType>

  <xs:element name='KeySize' type='xs:unsignedInt' />

  <xs:element name='SignatureAlgorithm' type='xs:anyURI' />
  <xs:element name='EncryptionAlgorithm' type='xs:anyURI' />
  <xs:element name='CanonicalizationAlgorithm' type='xs:anyURI' />
  <xs:element name='ComputedKeyAlgorithm' type='xs:anyURI' />

  <xs:element name='Encryption' type='wst:EncryptionType' />
  <xs:complexType name='EncryptionType' >
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' />
    </xs:sequence>
  </xs:complexType>

  <xs:element name='ProofEncryption' type='wst:ProofEncryptionType' />
  <xs:complexType name='ProofEncryptionType' >
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' />
    </xs:sequence>
  </xs:complexType>

  <xs:element name='UseKey' type='wst:UseKeyType' />
  <xs:complexType name='UseKeyType' >
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' minOccurs='0' />
    </xs:sequence>
    <xs:attribute name='Sig' type='xs:anyURI' use='optional' />
  </xs:complexType>

  <xs:element name='KeyWrapAlgorithm' type='xs:anyURI' />
  <xs:element name='SignWith' type='xs:anyURI' />
  <xs:element name='EncryptWith' type='xs:anyURI' />

  <!-- WS-Trust Section 9.3 -->
  <xs:element name='DelegateTo' type='wst:DelegateToType' />
  <xs:complexType name='DelegateToType' >
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' />
    </xs:sequence>
  </xs:complexType>

  <xs:element name='Forwardable' type='xs:boolean' />
  <xs:element name='Delegatable' type='xs:boolean' />

  <!-- WS-Trust Section 9.5 -->
  <xs:element name='Participants' type='wst:ParticipantsType' />
  <xs:complexType name='ParticipantsType' >
    <xs:sequence>
      <xs:element name='Primary' type='wst:ParticipantType' minOccurs='0' />
      <xs:element name='Participant' type='wst:ParticipantType' minOccurs='0' maxOccurs='unbounded' />
      <xs:any namespace='##other' processContents='lax' minOccurs='0' maxOccurs='unbounded' />
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name='ParticipantType' >
    <xs:sequence>
      <xs:any namespace='##any' processContents='lax' />
    </xs:sequence>
  </xs:complexType>

</xs:schema>
