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/*
* Copyright 1999-2004 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.
*
*/
package org.apache.xml.security.samples.signature;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.cert.X509Certificate;
import org.apache.xml.security.signature.XMLSignature;
import org.apache.xml.security.transforms.Transforms;
import org.apache.xml.security.utils.Constants;
import org.apache.xml.security.utils.XMLUtils;
import org.w3c.dom.Element;
/**
*
*
* @author $Author: mullan $
*/
public class CreateSignature {
/** {@link org.apache.commons.logging} logging facility */
static org.apache.commons.logging.Log log =
org.apache.commons.logging.LogFactory.getLog(CreateSignature.class.getName());
/**
* Method main
*
* @param unused
* @throws Exception
*/
public static void main(String unused[]) throws Exception {
Constants.setSignatureSpecNSprefix("ds");
//J-
//All the parameters for the keystore
String keystoreType = "JKS";
String keystoreFile = "data/org/apache/xml/security/samples/input/keystore.jks";
String keystorePass = "xmlsecurity";
String privateKeyAlias = "test";
String privateKeyPass = "xmlsecurity";
String certificateAlias = "test";
File signatureFile = new File("signature.xml");
//J+
KeyStore ks = KeyStore.getInstance(keystoreType);
FileInputStream fis = new FileInputStream(keystoreFile);
//load the keystore
ks.load(fis, keystorePass.toCharArray());
//get the private key for signing.
PrivateKey privateKey = (PrivateKey) ks.getKey(privateKeyAlias,
privateKeyPass.toCharArray());
javax.xml.parsers.DocumentBuilderFactory dbf =
javax.xml.parsers.DocumentBuilderFactory.newInstance();
//XML Signature needs to be namespace aware
dbf.setNamespaceAware(true);
javax.xml.parsers.DocumentBuilder db = dbf.newDocumentBuilder();
org.w3c.dom.Document doc = db.newDocument();
//Build a sample document. It will look something like:
//<!-- Comment before -->
//<apache:RootElement xmlns:apache="http://www.apache.org/ns/#app1">Some simple text
//</apache:RootElement>
//<!-- Comment after -->
doc.appendChild(doc.createComment(" Comment before "));
Element root = doc.createElementNS("http://www.apache.org/ns/#app1",
"apache:RootElement");
root.setAttributeNS(null, "attr1", "test1");
root.setAttributeNS(null, "attr2", "test2");
root.setAttributeNS(Constants.NamespaceSpecNS, "xmlns:foo", "http://example.org/#foo");
root.setAttributeNS("http://example.org/#foo", "foo:attr1", "foo's test");
root.setAttributeNS(Constants.NamespaceSpecNS, "xmlns:apache", "http://www.apache.org/ns/#app1");
doc.appendChild(root);
root.appendChild(doc.createTextNode("Some simple text\n"));
//The BaseURI is the URI that's used to prepend to relative URIs
String BaseURI = signatureFile.toURL().toString();
//Create an XML Signature object from the document, BaseURI and
//signature algorithm (in this case DSA)
XMLSignature sig = new XMLSignature(doc, BaseURI,
XMLSignature.ALGO_ID_SIGNATURE_DSA);
//Append the signature element to the root element before signing because
//this is going to be an enveloped signature.
//This means the signature is going to be enveloped by the document.
//Two other possible forms are enveloping where the document is inside the
//signature and detached where they are seperate.
//Note that they can be mixed in 1 signature with seperate references as
//shown below.
root.appendChild(sig.getElement());
doc.appendChild(doc.createComment(" Comment after "));
sig.getSignedInfo()
.addResourceResolver(new org.apache.xml.security.samples.utils.resolver
.OfflineResolver());
{
//create the transforms object for the Document/Reference
Transforms transforms = new Transforms(doc);
//First we have to strip away the signature element (it's not part of the
//signature calculations). The enveloped transform can be used for this.
transforms.addTransform(Transforms.TRANSFORM_ENVELOPED_SIGNATURE);
//Part of the signature element needs to be canonicalized. It is a kind
//of normalizing algorithm for XML. For more information please take a
//look at the W3C XML Digital Signature webpage.
transforms.addTransform(Transforms.TRANSFORM_C14N_WITH_COMMENTS);
//Add the above Document/Reference
sig.addDocument("", transforms, Constants.ALGO_ID_DIGEST_SHA1);
}
{
//Add in 2 external URIs. This is a detached Reference.
//
// When sign() is called, two network connections are made. -- well,
// not really, as we use the OfflineResolver which acts as a proxy for
// these two resouces ;-))
//
sig.addDocument("http://www.w3.org/TR/xml-stylesheet");
sig.addDocument("http://www.nue.et-inf.uni-siegen.de/index.html");
}
{
//Add in the KeyInfo for the certificate that we used the private key of
X509Certificate cert =
(X509Certificate) ks.getCertificate(certificateAlias);
sig.addKeyInfo(cert);
sig.addKeyInfo(cert.getPublicKey());
System.out.println("Start signing");
sig.sign(privateKey);
System.out.println("Finished signing");
}
FileOutputStream f = new FileOutputStream(signatureFile);
XMLUtils.outputDOMc14nWithComments(doc, f);
f.close();
System.out.println("Wrote signature to " + BaseURI);
}
static {
org.apache.xml.security.Init.init();
}
}
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