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/*
* Copyright 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.
*
*/
package org.apache.xml.security.test.signature;
import java.io.File;
import javax.crypto.SecretKey;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.apache.xml.security.Init;
import org.apache.xml.security.c14n.Canonicalizer;
import org.apache.xml.security.signature.XMLSignature;
import org.apache.xml.security.signature.XMLSignatureException;
import org.apache.xml.security.utils.Constants;
public class HMACOutputLengthTest extends TestCase {
private static DocumentBuilderFactory dbf = null;
protected void setUp() throws Exception {
Init.init();
dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
dbf.setValidating(false);
}
/** {@link org.apache.commons.logging} logging facility */
static org.apache.commons.logging.Log log =
org.apache.commons.logging.LogFactory.getLog
(HMACOutputLengthTest.class.getName());
private static final String BASEDIR = System.getProperty("basedir");
private static final String SEP = System.getProperty("file.separator");
public static Test suite() {
return new TestSuite(HMACOutputLengthTest.class);
}
public HMACOutputLengthTest(String name) {
super(name);
}
public static void main(String[] args) {
String[] testCaseName = { "-noloading",
HMACOutputLengthTest.class.getName() };
junit.textui.TestRunner.main(testCaseName);
}
public void test_signature_enveloping_hmac_sha1_trunclen_0() throws Exception {
try {
validate("signature-enveloping-hmac-sha1-trunclen-0-attack.xml");
fail("Expected HMACOutputLength exception");
} catch (XMLSignatureException xse) {
System.out.println(xse.getMessage());
if (xse.getMsgID().equals("algorithms.HMACOutputLengthMin")) {
// pass
} else {
fail(xse.getMessage());
}
}
}
public void test_signature_enveloping_hmac_sha1_trunclen_8() throws Exception {
try {
validate("signature-enveloping-hmac-sha1-trunclen-8-attack.xml");
} catch (XMLSignatureException xse) {
System.out.println(xse.getMessage());
if (xse.getMsgID().equals("algorithms.HMACOutputLengthMin")) {
// pass
} else {
fail(xse.getMessage());
}
}
}
private static void validate(String data) throws Exception {
System.out.println("Validating " + data);
File file = new File(BASEDIR + SEP + "data" + SEP + "javax" + SEP + "xml" + SEP + "crypto" + SEP + "dsig" + SEP, data);
Document doc = dbf.newDocumentBuilder().parse(file);
NodeList nl =
doc.getElementsByTagNameNS(Constants.SignatureSpecNS, "Signature");
if (nl.getLength() == 0) {
throw new Exception("Couldn't find signature Element");
}
Element sigElement = (Element) nl.item(0);
XMLSignature signature = new XMLSignature
(sigElement, file.toURI().toString());
SecretKey sk = signature.createSecretKey("secret".getBytes("ASCII"));
System.out.println
("Validation status: " + signature.checkSignatureValue(sk));
}
public void test_generate_hmac_sha1_40() throws Exception {
System.out.println("Generating ");
Document doc = dbf.newDocumentBuilder().newDocument();
XMLSignature sig = new XMLSignature
(doc, null, XMLSignature.ALGO_ID_MAC_HMAC_SHA1, 40,
Canonicalizer.ALGO_ID_C14N_OMIT_COMMENTS);
try {
sig.sign(getSecretKey("secret".getBytes("ASCII")));
fail("Expected HMACOutputLength Exception");
} catch (XMLSignatureException xse) {
System.out.println(xse.getMessage());
if (xse.getMsgID().equals("algorithms.HMACOutputLengthMin")) {
// pass
} else {
fail(xse.getMessage());
}
}
}
private static SecretKey getSecretKey(final byte[] secret) {
return new SecretKey() {
public String getFormat() { return "RAW"; }
public byte[] getEncoded() { return secret; }
public String getAlgorithm(){ return "SECRET"; }
};
}
}
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