<?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="{0}xsd=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="{0}xsd=oasis-200401-wss-wssecurity-utility-1.0.xsd" />
  <xs:import namespace="http://schemas.xmlsoap.org/ws/2004/09/policy" 
			 schemaLocation="{0}xsd=ws-policy.xsd" />
  <xs:import namespace="http://www.w3.org/2005/08/addressing" 
			 schemaLocation="{0}xsd=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>
