<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="urn:oasis:names:tc:SAML:2.0:ac:classes:SPKI" targetNamespace="urn:oasis:names:tc:SAML:2.0:ac:classes:SPKI" finalDefault="extension" blockDefault="substitution" version="2.0">

    <xs:redefine schemaLocation="classpath:/schema/saml-schema-authn-context-types-2.0.xsd">

        <xs:annotation>
            <xs:documentation>
                Class identifier: urn:oasis:names:tc:SAML:2.0:ac:classes:SPKI Document identifier:
                saml-schema-authn-context-spki-2.0 Location: http://docs.oasis-open.org/security/saml/v2.0/ Revision
                history: V2.0 (March, 2005): New authentication context class schema for SAML V2.0.
            </xs:documentation>
        </xs:annotation>

        <xs:complexType name="AuthnContextDeclarationBaseType">
            <xs:complexContent>
                <xs:restriction base="AuthnContextDeclarationBaseType">
                    <xs:sequence>
                        <xs:element ref="Identification" minOccurs="0"/>
                        <xs:element ref="TechnicalProtection" minOccurs="0"/>
                        <xs:element ref="OperationalProtection" minOccurs="0"/>
                        <xs:element ref="AuthnMethod"/>
                        <xs:element ref="GoverningAgreements" minOccurs="0"/>
                        <xs:element ref="Extension" minOccurs="0" maxOccurs="unbounded"/>
                    </xs:sequence>
                    <xs:attribute name="ID" type="xs:ID" use="optional"/>
                </xs:restriction>
            </xs:complexContent>
        </xs:complexType>

        <xs:complexType name="AuthnMethodBaseType">
            <xs:complexContent>
                <xs:restriction base="AuthnMethodBaseType">
                    <xs:sequence>
                        <xs:element ref="PrincipalAuthenticationMechanism"/>
                        <xs:element ref="Authenticator"/>
                        <xs:element ref="AuthenticatorTransportProtocol" minOccurs="0"/>
                        <xs:element ref="Extension" minOccurs="0" maxOccurs="unbounded"/>
                    </xs:sequence>
                </xs:restriction>
            </xs:complexContent>
        </xs:complexType>

        <xs:complexType name="PrincipalAuthenticationMechanismType">
            <xs:complexContent>
                <xs:restriction base="PrincipalAuthenticationMechanismType">
                    <xs:sequence>
                        <xs:element ref="RestrictedPassword"/>
                    </xs:sequence>
                    <xs:attribute name="preauth" type="xs:integer" use="optional"/>
                </xs:restriction>
            </xs:complexContent>
        </xs:complexType>

        <xs:complexType name="AuthenticatorBaseType">
            <xs:complexContent>
                <xs:restriction base="AuthenticatorBaseType">
                    <xs:sequence>
                        <xs:element ref="DigSig"/>
                    </xs:sequence>
                </xs:restriction>
            </xs:complexContent>
        </xs:complexType>

        <xs:complexType name="PublicKeyType">
            <xs:complexContent>
                <xs:restriction base="PublicKeyType">
                    <xs:attribute name="keyValidation" fixed="urn:oasis:names:tc:SAML:2.0:ac:classes:SPKI"/>
                </xs:restriction>
            </xs:complexContent>
        </xs:complexType>

    </xs:redefine>

</xs:schema>
