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/*
* Copyright 2006-2009 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
*/
package javax.xml.crypto.test.dsig;
import javax.xml.crypto.dsig.*;
import javax.xml.crypto.dsig.dom.DOMSignContext;
import javax.xml.crypto.dsig.dom.DOMValidateContext;
import javax.xml.crypto.dsig.keyinfo.*;
import javax.xml.crypto.dsig.spec.C14NMethodParameterSpec;
import java.security.*;
import java.util.*;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import junit.framework.*;
/**
* This is a simple example of generating and validating a Detached XML
* Signature using the JSR 105 API. The resulting signature will look
* like (key and signature values will be different):
*
* <pre><code>
* <Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
* <SignedInfo>
* <CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/>
* <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#dsa-sha1"/>
* <Reference URI="http://www.w3.org/TR/xml-stylesheet">
* <DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
* <DigestValue>60NvZvtdTB+7UnlLp/H24p7h4bs=</DigestValue>
* </Reference>
* </SignedInfo>
* <SignatureValue>
* DpEylhQoiUKBoKWmYfajXO7LZxiDYgVtUtCNyTgwZgoChzorA2nhkQ==
* </SignatureValue>
* <KeyInfo>
* <KeyValue>
* <DSAKeyValue>
* <P>
* rFto8uPQM6y34FLPmDh40BLJ1rVrC8VeRquuhPZ6jYNFkQuwxnu/wCvIAMhukPBL
* FET8bJf/b2ef+oqxZajEb+88zlZoyG8g/wMfDBHTxz+CnowLahnCCTYBp5kt7G8q
* UobJuvjylwj1st7V9Lsu03iXMXtbiriUjFa5gURasN8=
* </P>
* <Q>
* kEjAFpCe4lcUOdwphpzf+tBaUds=
* </Q>
* <G>
* oe14R2OtyKx+s+60O5BRNMOYpIg2TU/f15N3bsDErKOWtKXeNK9FS7dWStreDxo2
* SSgOonqAd4FuJ/4uva7GgNL4ULIqY7E+mW5iwJ7n/WTELh98mEocsLXkNh24HcH4
* BZfSCTruuzmCyjdV1KSqX/Eux04HfCWYmdxN3SQ/qqw=
* </G>
* <Y>
* pA5NnZvcd574WRXuOA7ZfC/7Lqt4cB0MRLWtHubtJoVOao9ib5ry4rTk0r6ddnOv
* AIGKktutzK3ymvKleS3DOrwZQgJ+/BDWDW8kO9R66o6rdjiSobBi/0c2V1+dkqOg
* jFmKz395mvCOZGhC7fqAVhHat2EjGPMfgSZyABa7+1k=
* </Y>
* </KeyValue>
* </DSAKeyValue>
* </KeyInfo>
* </Signature>
*
* @author Sean Mullan
*/
public class DetachedTest extends TestCase {
static {
Security.insertProviderAt
(new org.jcp.xml.dsig.internal.dom.XMLDSigRI(), 1);
}
public DetachedTest(String name) {
super(name);
}
public void test() {
try {
//
// PART 1 : Creating the detached signature
//
// Create a factory that will be used to generate the signature
// structures
XMLSignatureFactory fac = XMLSignatureFactory.getInstance
("DOM", new org.jcp.xml.dsig.internal.dom.XMLDSigRI());
// Create a Reference to an external URI that will be digested
Reference ref = fac.newReference
("http://www.w3.org/TR/xml-stylesheet",
fac.newDigestMethod(DigestMethod.SHA1, null));
// Create a DSA KeyPair
KeyPairGenerator kpg = KeyPairGenerator.getInstance("DSA");
kpg.initialize(1024,
new SecureRandom("not so random bytes".getBytes()));
KeyPair kp = kpg.generateKeyPair();
// Create a KeyValue containing the generated DSA PublicKey
KeyInfoFactory kif = fac.getKeyInfoFactory();
KeyValue kv = kif.newKeyValue(kp.getPublic());
// Create a KeyInfo and add the KeyValue to it
KeyInfo ki = kif.newKeyInfo(Collections.singletonList(kv));
// Create SignedInfo
SignedInfo si = fac.newSignedInfo(fac.newCanonicalizationMethod(
CanonicalizationMethod.INCLUSIVE_WITH_COMMENTS,
(C14NMethodParameterSpec) null),
fac.newSignatureMethod(SignatureMethod.DSA_SHA1, null),
Collections.singletonList(ref));
// Create XMLSignature
XMLSignature signature = fac.newXMLSignature(si,ki,null,null,null);
// Create an XMLSignContext and set the
// DSA PrivateKey for signing
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
dbf.setValidating(false);
Document doc = dbf.newDocumentBuilder().newDocument();
DOMSignContext signContext = new DOMSignContext(kp.getPrivate(), doc);
signContext.putNamespacePrefix(XMLSignature.XMLNS, "ds");
// Generate (and sign) the XMLSignature
signature.sign(signContext);
//
// PART 2 : Validating the detached signature
//
// Create a XMLValidateContext & set the DSAPublicKey for validating
XMLValidateContext vc = new DOMValidateContext(kp.getPublic(),
doc.getDocumentElement());
// Validate the Signature (generated above)
boolean coreValidity = signature.validate(vc);
// Check core validation status
if (coreValidity == false) {
// check the validation status of each Reference
Iterator i = signature.getSignedInfo().getReferences().iterator();
for (int j=0; i.hasNext(); j++) {
Reference reference = (Reference) i.next();
reference.validate(vc);
}
fail("Signature failed core validation");
}
// You can also validate an XML Signature which is in XML format.
// Unmarshal and validate an XMLSignature from a DOMValidateContext
signature = fac.unmarshalXMLSignature(vc);
coreValidity = signature.validate(vc);
assertTrue("Core validity of unmarshalled XMLSignature is false",
coreValidity);
} catch(Exception ex) {
fail("Exception: " + ex);
}
}
public static void main(String[] args) throws Exception {
DetachedTest dt = new DetachedTest("");
dt.test();
}
}
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