<?xml version="1.0" encoding="UTF-8"?>
<!-- edited with XML Spy v4.2 U (http://www.xmlspy.com) by Phillip Hallam-Baker (Phillip Hallam-Baker) -->
<schema targetNamespace="urn:oasis:names:tc:SAML:1.0:protocol" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:saml="urn:oasis:names:tc:SAML:1.0:assertion" xmlns:samlp="urn:oasis:names:tc:SAML:1.0:protocol" xmlns="http://www.w3.org/2001/XMLSchema" elementFormDefault="unqualified">
        <import namespace="urn:oasis:names:tc:SAML:1.0:assertion" schemaLocation="cs-sstc-schema-assertion-01.xsd"/>
        <import namespace="http://www.w3.org/2000/09/xmldsig#" schemaLocation="http://www.w3.org/TR/xmldsig-core/xmldsig-core-schema.xsd"/>
        <annotation>
                <documentation>
                Document identifier: cs-sstc-schema-protocol-01
                Location: http://www.oasis-open.org/committees/security/docs/
                </documentation>
        </annotation>
        <complexType name="RequestAbstractType" abstract="true">
                <sequence>
                        <element ref="samlp:RespondWith" minOccurs="0" maxOccurs="unbounded"/>
                        <element ref="ds:Signature" minOccurs="0"/>
                </sequence>
                <attribute name="RequestID" type="saml:IDType" use="required"/>
                <attribute name="MajorVersion" type="integer" use="required"/>
                <attribute name="MinorVersion" type="integer" use="required"/>
                <attribute name="IssueInstant" type="dateTime" use="required"/>
        </complexType>
        <element name="RespondWith" type="QName"/>
        <element name="Request" type="samlp:RequestType"/>
        <complexType name="RequestType">
                <complexContent>
                        <extension base="samlp:RequestAbstractType">
                                <choice>
                                        <element ref="samlp:Query"/>
                                        <element ref="samlp:SubjectQuery"/>
                                        <element ref="samlp:AuthenticationQuery"/>
                                        <element ref="samlp:AttributeQuery"/>
                                        <element ref="samlp:AuthorizationDecisionQuery"/>
                                        <element ref="saml:AssertionIDReference" maxOccurs="unbounded"/>
                                        <element ref="samlp:AssertionArtifact" maxOccurs="unbounded"/>
                                </choice>
                        </extension>
                </complexContent>
        </complexType>
        <element name="AssertionArtifact" type="string"/>
        <element name="Query" type="samlp:QueryAbstractType"/>
        <complexType name="QueryAbstractType" abstract="true"/>
        <element name="SubjectQuery" type="samlp:SubjectQueryAbstractType"/>
        <complexType name="SubjectQueryAbstractType" abstract="true">
                <complexContent>
                        <extension base="samlp:QueryAbstractType">
                                <sequence>
                                        <element ref="saml:Subject"/>
                                </sequence>
                        </extension>
                </complexContent>
        </complexType>
        <element name="AuthenticationQuery" type="samlp:AuthenticationQueryType"/>
        <complexType name="AuthenticationQueryType">
                <complexContent>
                        <extension base="samlp:SubjectQueryAbstractType">
                                <attribute name="AuthenticationMethod" type="anyURI"/>
                        </extension>
                </complexContent>
        </complexType>
        <element name="AttributeQuery" type="samlp:AttributeQueryType"/>
        <complexType name="AttributeQueryType">
                <complexContent>
                        <extension base="samlp:SubjectQueryAbstractType">
                                <sequence>
                                        <element ref="saml:AttributeDesignator" minOccurs="0" maxOccurs="unbounded"/>
                                </sequence>
                                <attribute name="Resource" type="anyURI" use="optional"/>
                        </extension>
                </complexContent>
        </complexType>
        <element name="AuthorizationDecisionQuery" type="samlp:AuthorizationDecisionQueryType"/>
        <complexType name="AuthorizationDecisionQueryType">
                <complexContent>
                        <extension base="samlp:SubjectQueryAbstractType">
                                <sequence>
                                        <element ref="saml:Action" maxOccurs="unbounded"/>
                                        <element ref="saml:Evidence" minOccurs="0" maxOccurs="1"/>
                                </sequence>
                                <attribute name="Resource" type="anyURI" use="required"/>
                        </extension>
                </complexContent>
        </complexType>
        <complexType name="ResponseAbstractType" abstract="true">
                <sequence>
                        <element ref="ds:Signature" minOccurs="0"/>
                </sequence>
                <attribute name="ResponseID" type="saml:IDType" use="required"/>
                <attribute name="InResponseTo" type="saml:IDReferenceType" use="optional"/>
                <attribute name="MajorVersion" type="integer" use="required"/>
                <attribute name="MinorVersion" type="integer" use="required"/>
                <attribute name="IssueInstant" type="dateTime" use="required"/>
                <attribute name="Recipient" type="anyURI" use="optional"/>
        </complexType>
        <element name="Response" type="samlp:ResponseType"/>
        <complexType name="ResponseType">
                <complexContent>
                        <extension base="samlp:ResponseAbstractType">
                                <sequence>
                                        <element ref="samlp:Status"/>
                                        <element ref="saml:Assertion" minOccurs="0" maxOccurs="unbounded"/>
                                </sequence>
                        </extension>
                </complexContent>
        </complexType>
        <element name="Status" type="samlp:StatusType"/>
        <complexType name="StatusType">
                <sequence>
                        <element ref="samlp:StatusCode"/>
                        <element ref="samlp:StatusMessage" minOccurs="0" maxOccurs="1"/>
                        <element ref="samlp:StatusDetail" minOccurs="0"/>
                </sequence>
        </complexType>
        <element name="StatusCode" type="samlp:StatusCodeType"/>
        <complexType name="StatusCodeType">
                <sequence>
                        <element ref="samlp:StatusCode" minOccurs="0"/>
                </sequence>
                <attribute name="Value" type="QName" use="required"/>
        </complexType>
        <element name="StatusMessage" type="string"/>
        <element name="StatusDetail" type="samlp:StatusDetailType"/>
        <complexType name="StatusDetailType">
                <sequence>
                        <any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
                </sequence>
        </complexType>
</schema>
