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/*
* 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.catalina.realm;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.apache.tomcat.util.buf.HexUtils;
public class SecretKeyCredentialHandler extends DigestCredentialHandlerBase {
private static final Log log = LogFactory.getLog(SecretKeyCredentialHandler.class);
public static final String DEFAULT_ALGORITHM = "PBKDF2WithHmacSHA1";
public static final int DEFAULT_KEY_LENGTH = 160;
public static final int DEFAULT_ITERATIONS = 20000;
private SecretKeyFactory secretKeyFactory;
private int keyLength = DEFAULT_KEY_LENGTH;
public SecretKeyCredentialHandler() throws NoSuchAlgorithmException {
setAlgorithm(DEFAULT_ALGORITHM);
}
@Override
public String getAlgorithm() {
return secretKeyFactory.getAlgorithm();
}
@Override
public void setAlgorithm(String algorithm) throws NoSuchAlgorithmException {
this.secretKeyFactory = SecretKeyFactory.getInstance(algorithm);
}
public int getKeyLength() {
return keyLength;
}
public void setKeyLength(int keyLength) {
this.keyLength = keyLength;
}
@Override
public boolean matches(String inputCredentials, String storedCredentials) {
return matchesSaltIterationsEncoded(inputCredentials, storedCredentials);
}
@Override
protected String mutate(String inputCredentials, byte[] salt, int iterations) {
return mutate(inputCredentials, salt, iterations, getKeyLength());
}
@Override
protected String mutate(String inputCredentials, byte[] salt, int iterations, int keyLength) {
try {
KeySpec spec = new PBEKeySpec(inputCredentials.toCharArray(), salt, iterations, keyLength);
return HexUtils.toHexString(secretKeyFactory.generateSecret(spec).getEncoded());
} catch (InvalidKeySpecException | IllegalArgumentException e) {
log.warn(sm.getString("pbeCredentialHandler.invalidKeySpec"), e);
return null;
}
}
@Override
protected int getDefaultIterations() {
return DEFAULT_ITERATIONS;
}
@Override
protected Log getLog() {
return log;
}
}
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