<?xml version="1.0" encoding="utf-8"?>

<!--
#
# Copyright ©[2011] World Wide Web Consortium 
# (Massachusetts Institute of Technology,  
#  European Research Consortium for Informatics and Mathematics, 
#  Keio University). All Rights Reserved.  
# This work is distributed under the W3C® Software License [1] in the
# hope that it will be useful, but WITHOUT ANY WARRANTY; without even
# the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
# PURPOSE. 
# [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
#
-->

<schema xmlns='http://www.w3.org/2001/XMLSchema' version='1.0'
        xmlns:xenc='http://www.w3.org/2001/04/xmlenc#'
        xmlns:xenc11='http://www.w3.org/2009/xmlenc11#'
        xmlns:ds='http://www.w3.org/2000/09/xmldsig#'
        targetNamespace='http://www.w3.org/2009/xmlenc11#'
        elementFormDefault='qualified'>

	<import namespace='http://www.w3.org/2000/09/xmldsig#'
			schemaLocation='./xmldsig-core-schema.xsd'/>

	<import namespace='http://www.w3.org/2001/04/xmlenc#'
			schemaLocation='./xenc-schema.xsd'/>

	<element name="ConcatKDFParams" type="xenc11:ConcatKDFParamsType"/>
	<complexType name="ConcatKDFParamsType">
		<sequence>
			<element ref="ds:DigestMethod"/>
		</sequence>
		<attribute name="AlgorithmID" type="hexBinary"/>
		<attribute name="PartyUInfo" type="hexBinary"/>
		<attribute name="PartyVInfo" type="hexBinary"/>
		<attribute name="SuppPubInfo" type="hexBinary"/>
		<attribute name="SuppPrivInfo" type="hexBinary"/>
	</complexType>

	<element name="DerivedKey" type="xenc11:DerivedKeyType"/>
	<complexType name="DerivedKeyType">
		<sequence>
			<element ref="xenc11:KeyDerivationMethod" minOccurs="0"/>
			<element ref="xenc:ReferenceList" minOccurs="0"/>
			<element name="DerivedKeyName" type="string" minOccurs="0"/>
			<element name="MasterKeyName" type="string" minOccurs="0"/>
		</sequence>
		<attribute name="Recipient" type="string" use="optional"/>
		<attribute name="Id" type="ID" use="optional"/>
		<attribute name="Type" type="anyURI" use="optional"/>
	</complexType>

	<element name="KeyDerivationMethod" type="xenc11:KeyDerivationMethodType"/>
	<complexType name="KeyDerivationMethodType">
		<sequence>
			<any namespace="##any" minOccurs="0" maxOccurs="unbounded"/>
		</sequence>
		<attribute name="Algorithm" type="anyURI" use="required"/>
	</complexType>

	<element name="PBKDF2-params" type="xenc11:PBKDF2ParameterType"/>

	<complexType name="AlgorithmIdentifierType">
		<sequence>
			<element name="Parameters" minOccurs="0"/>
		</sequence>
        <attribute name="Algorithm" type="anyURI" use="required" />
	</complexType>

	<complexType name="PRFAlgorithmIdentifierType">
		<complexContent>
          <restriction base="xenc11:AlgorithmIdentifierType">
            <attribute name="Algorithm" type="anyURI" use="required" />
          </restriction>
        </complexContent>
	</complexType>

	<complexType name="PBKDF2ParameterType">
		<sequence>
			<element name="Salt">
				<complexType>
					<choice>
						<element name="Specified" type="base64Binary"/>
						<element name="OtherSource" type="xenc11:AlgorithmIdentifierType"/>
					</choice>
				</complexType>
			</element>
			<element name="IterationCount" type="positiveInteger"/>
			<element name="KeyLength" type="positiveInteger"/>
			<element name="PRF" type="xenc11:PRFAlgorithmIdentifierType"/>
		</sequence>
	</complexType>

    <element name="MGF" type="xenc11:MGFType"/>
    <complexType name="MGFType">
      <complexContent>
        <restriction base="xenc11:AlgorithmIdentifierType">
          <attribute name="Algorithm" type="anyURI" use="required" />
        </restriction>
      </complexContent>
    </complexType>

</schema>


