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/*
* Copyright (c) 2009, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test %I% %E%
* @bug 6824440 6858484
* @summary Check that Apache XMLSec APIs will not accept HMAC truncation
* lengths less than minimum bound
* @modules java.xml.crypto/com.sun.org.apache.xml.internal.security
* java.xml.crypto/com.sun.org.apache.xml.internal.security.c14n
* java.xml.crypto/com.sun.org.apache.xml.internal.security.signature
* java.xml.crypto/com.sun.org.apache.xml.internal.security.utils
* @compile -XDignore.symbol.file TruncateHMAC.java
* @run main TruncateHMAC
*/
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 com.sun.org.apache.xml.internal.security.Init;
import com.sun.org.apache.xml.internal.security.c14n.Canonicalizer;
import com.sun.org.apache.xml.internal.security.signature.XMLSignature;
import com.sun.org.apache.xml.internal.security.signature.XMLSignatureException;
import com.sun.org.apache.xml.internal.security.utils.Constants;
import static java.nio.charset.StandardCharsets.US_ASCII;
public class TruncateHMAC {
private final static String DIR = System.getProperty("test.src", ".");
private static DocumentBuilderFactory dbf = null;
private static boolean atLeastOneFailed = false;
public static void main(String[] args) throws Exception {
Init.init();
dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
dbf.setValidating(false);
validate("signature-enveloping-hmac-sha1-trunclen-0-attack.xml", false);
validate("signature-enveloping-hmac-sha1-trunclen-8-attack.xml", false);
// this one should pass
validate("signature-enveloping-hmac-sha1.xml", true);
// There are multiple validations regarding hmac min output length, therefore
// checking different values will exercise multiple code blocks
generate_hmac_sha1(40);
generate_hmac_sha1(128);
if (atLeastOneFailed) {
throw new Exception
("At least one signature did not validate as expected");
}
}
private static void validate(String data, boolean pass) throws Exception {
System.out.println("Validating " + data);
File file = new File(DIR, 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);
try {
XMLSignature signature = new XMLSignature
(sigElement, file.toURI().toString());
SecretKey sk = signature.createSecretKey("secret".getBytes(US_ASCII));
System.out.println
("Validation status: " + signature.checkSignatureValue(sk));
if (!pass) {
System.out.println("FAILED");
atLeastOneFailed = true;
} else {
System.out.println("PASSED");
}
} catch (XMLSignatureException xse) {
System.out.println(xse.getMessage());
if (!pass) {
System.out.println("PASSED");
} else {
System.out.println("FAILED");
atLeastOneFailed = true;
}
}
}
private static void generate_hmac_sha1(int hmacOutputLength) throws Exception {
System.out.println("Generating " + hmacOutputLength);
Document doc = dbf.newDocumentBuilder().newDocument();
try {
XMLSignature sig = new XMLSignature
(doc, null, XMLSignature.ALGO_ID_MAC_HMAC_SHA1, hmacOutputLength,
Canonicalizer.ALGO_ID_C14N_OMIT_COMMENTS);
sig.sign(getSecretKey("secret".getBytes(US_ASCII)));
System.out.println("FAILED");
atLeastOneFailed = true;
} catch (XMLSignatureException xse) {
System.out.println(xse.getMessage());
System.out.println("PASSED");
}
}
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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