/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.canonicalization;
import java.io.ByteArrayInputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathFactory;
import org.apache.xml.security.c14n.Canonicalizer;
import org.apache.xml.security.samples.DSNamespaceContext;
import org.apache.xml.security.samples.SampleUtils;
import org.apache.xml.security.utils.Constants;
import org.apache.xml.security.utils.XMLUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
*
* @author Christian Geuer-Pollmann
*/
public class CanonSubTree {
static String input = ""
+ "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+ "<Signature xmlns=\"http://www.w3.org/2000/09/xmldsig#\">\n"
+ " <SignedInfo><!-- comment inside -->\n"
+ " <CanonicalizationMethod Algorithm=\"http://www.w3.org/TR/2001/REC-xml-c14n-20010315\" />\n"
+ " <SignatureMethod Algorithm=\"http://www.w3.org/2000/09/xmldsig#rsa-sha1\" />\n"
+ " <Reference URI=\"http://www.w3.org/TR/xml-stylesheet\">\n"
+ " <DigestMethod Algorithm=\"http://www.w3.org/2000/09/xmldsig#sha1\" />\n"
+ " <DigestValue>60NvZvtdTB+7UnlLp/H24p7h4bs=</DigestValue>\n"
+ " </Reference>\n"
+ " </SignedInfo>\n"
+ " <SignatureValue>\n"
+ " fKMmy9GYF2s8rLFrZdVugTOFuWx19ccX7jh5HqFd4vMOY7LWAj52ykjSdvtW3fNY\n"
+ " PPYGC4MFL19oPSId5GEsMtFMpGXB3XaCtoKjMCHQsN3+kom8YnGf7Ge1JNRcGty5\n"
+ " 0UsoP6Asj47+QR7QECT64uoziha4WRDVyXjDrg24W+U=\n"
+ " </SignatureValue>\n"
+ " <KeyInfo>\n"
+ " <KeyName>Lugh</KeyName>\n"
+ " </KeyInfo>\n"
+ "</Signature>\n"
;
/**
* Method main
*
* @param args
* @throws Exception
*/
public static void main(String args[]) throws Exception {
org.apache.xml.security.Init.init();
DocumentBuilderFactory dfactory = DocumentBuilderFactory.newInstance();
dfactory.setNamespaceAware(true);
dfactory.setValidating(true);
DocumentBuilder documentBuilder = dfactory.newDocumentBuilder();
// this is to throw away all validation warnings
documentBuilder.setErrorHandler(new org.apache.xml.security.utils.IgnoreAllErrorHandler());
byte inputBytes[] = input.getBytes();
Document doc =
documentBuilder.parse(new ByteArrayInputStream(inputBytes));
Canonicalizer c14n =
Canonicalizer
.getInstance("http://www.w3.org/TR/2001/REC-xml-c14n-20010315");
XPathFactory xpf = XPathFactory.newInstance();
XPath xpath = xpf.newXPath();
xpath.setNamespaceContext(new DSNamespaceContext());
String expression = "//ds:SignedInfo[1]";
Element signedInfo =
(Element) xpath.evaluate(expression, doc, XPathConstants.NODE);
byte outputBytes[] = c14n.canonicalizeSubtree(signedInfo);
if (outputBytes != null) {
System.out.println(new String(outputBytes));
}
}
}