<?xml version=“1.0” encoding=“utf-8”?> <schema xmlns=“www.w3.org/2001/XMLSchema

      xmlns:ds="http://www.w3.org/2000/09/xmldsig#"
      xmlns:dsig11="http://www.w3.org/2009/xmldsig11#"
      targetNamespace="http://www.w3.org/2009/xmldsig11#"
      version="0.1" elementFormDefault="qualified">

<import namespace="http://www.w3.org/2000/09/xmldsig#"/>

<element name="ECKeyValue" type="dsig11:ECKeyValueType"/>
<complexType name="ECKeyValueType">
  <sequence>
    <choice>
      <element name="ECParameters" type="dsig11:ECParametersType"/>
      <element name="NamedCurve" type="dsig11:NamedCurveType"/>
    </choice>
    <element name="PublicKey" type="dsig11:ECPointType"/>
  </sequence>
  <attribute name="Id" type="ID" use="optional"/>
</complexType>

<complexType name="NamedCurveType">
  <attribute name="URI" type="anyURI" use="required"/>
</complexType>

<simpleType name="ECPointType">
  <restriction base="ds:CryptoBinary"/>
</simpleType>

<complexType name="ECParametersType">
  <sequence>
    <element name="FieldID" type="dsig11:FieldIDType"/>
    <element name="Curve" type="dsig11:CurveType"/>
    <element name="Base" type="dsig11:ECPointType"/>
    <element name="Order" type="ds:CryptoBinary"/>
    <element name="CoFactor" type="integer" minOccurs="0"/>
    <element name="ValidationData"
             type="dsig11:ECValidationDataType" minOccurs="0"/>
  </sequence>
</complexType>

<complexType name="FieldIDType">
  <choice>
    <element ref="dsig11:Prime"/>
    <element ref="dsig11:TnB"/>
    <element ref="dsig11:PnB"/>
    <element ref="dsig11:GnB"/>
    <any namespace="##other" processContents="lax"/>
  </choice>
</complexType>

<complexType name="CurveType">
  <sequence>
    <element name="A" type="ds:CryptoBinary"/>
    <element name="B" type="ds:CryptoBinary"/>
  </sequence>
</complexType>

<complexType name="ECValidationDataType">
  <sequence>
    <element name="seed" type="ds:CryptoBinary"/>
  </sequence>
  <attribute name="hashAlgorithm" type="anyURI" use="required"/>
</complexType>

<element name="Prime" type="dsig11:PrimeFieldParamsType"/>
<complexType name="PrimeFieldParamsType">
  <sequence>
    <element name="P" type="ds:CryptoBinary"/>
  </sequence>
</complexType>

<element name="GnB" type="dsig11:CharTwoFieldParamsType"/>
<complexType name="CharTwoFieldParamsType">
  <sequence>
    <element name="M" type="positiveInteger"/>
  </sequence>
</complexType>

<element name="TnB" type="dsig11:TnBFieldParamsType"/>
<complexType name="TnBFieldParamsType">
  <complexContent>
    <extension base="dsig11:CharTwoFieldParamsType">
      <sequence>
        <element name="K" type="positiveInteger"/>
      </sequence>
    </extension>
  </complexContent>
</complexType>

<element name="PnB" type="dsig11:PnBFieldParamsType"/>
<complexType name="PnBFieldParamsType">
  <complexContent>
    <extension base="dsig11:CharTwoFieldParamsType">
      <sequence>
        <element name="K1" type="positiveInteger"/>
        <element name="K2" type="positiveInteger"/>
        <element name="K3" type="positiveInteger"/>
      </sequence>
    </extension>
  </complexContent>
</complexType>

<element name="OCSPResponse" type="base64Binary"/>

<element name="DEREncodedKeyValue" type="dsig11:DEREncodedKeyValueType"/>
<complexType name="DEREncodedKeyValueType">
  <simpleContent>
    <extension base="base64Binary">
      <attribute name="Id" type="ID" use="optional"/>
    </extension>
  </simpleContent>
</complexType>

<element name="KeyInfoReference" type="dsig11:KeyInfoReferenceType"/>
<complexType name="KeyInfoReferenceType">
  <attribute name="URI" type="anyURI" use="required"/>
  <attribute name="Id" type="ID" use="optional"/>
</complexType>

<element name="X509Digest" type="dsig11:X509DigestType"/>
<complexType name="X509DigestType">
  <simpleContent>
    <extension base="base64Binary">
      <attribute name="Algorithm" type="anyURI" use="required"/>
    </extension>
  </simpleContent>
</complexType>

</schema>