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/*
* JBoss, Home of Professional Open Source
*
* Copyright 2013 Red Hat, Inc. and/or its affiliates.
*
* 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.picketlink.common.util;
import java.io.UnsupportedEncodingException;
import java.security.GeneralSecurityException;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;
/**
* Utility dealing with Password Based Encryption (Code is ripped off of the PBEUtils class in JBossSecurity/PicketBox)
*
* @author [email protected]
* @author [email protected]
* @since May 25, 2010
*/
public class PBEUtils {
public static byte[] encode(byte[] secret, String cipherAlgorithm, SecretKey cipherKey, PBEParameterSpec cipherSpec)
throws Exception {
Cipher cipher = Cipher.getInstance(cipherAlgorithm);
cipher.init(Cipher.ENCRYPT_MODE, cipherKey, cipherSpec);
byte[] encoding = cipher.doFinal(secret);
return encoding;
}
public static String encode64(byte[] secret, String cipherAlgorithm, SecretKey cipherKey, PBEParameterSpec cipherSpec)
throws Exception {
byte[] encoding = encode(secret, cipherAlgorithm, cipherKey, cipherSpec);
String b64 = Base64.encodeBytes(encoding);
return b64;
}
public static byte[] decode(byte[] secret, String cipherAlgorithm, SecretKey cipherKey, PBEParameterSpec cipherSpec)
throws GeneralSecurityException {
Cipher cipher = Cipher.getInstance(cipherAlgorithm);
cipher.init(Cipher.DECRYPT_MODE, cipherKey, cipherSpec);
byte[] decode = cipher.doFinal(secret);
return decode;
}
public static String decode64(String secret, String cipherAlgorithm, SecretKey cipherKey, PBEParameterSpec cipherSpec)
throws GeneralSecurityException, UnsupportedEncodingException {
byte[] encoding = Base64.decode(secret);
byte[] decode = decode(encoding, cipherAlgorithm, cipherKey, cipherSpec);
return new String(decode, "UTF-8");
}
public static void main(String[] args) throws Exception {
if (args.length != 3) {
System.err.println("Encrypt a password" + "Usage: PBEUtils salt count domain-password password"
+ " salt : the Salt " + " count : the IterationCount "
+ " password : the plaintext password that should be encrypted");
throw new RuntimeException(" ERROR: please see format above");
}
byte[] salt = args[0].substring(0, 8).getBytes();
int count = Integer.parseInt(args[1]);
char[] password = "somearbitrarycrazystringthatdoesnotmatter".toCharArray();
byte[] passwordToEncode = args[2].getBytes("UTF-8");
PBEParameterSpec cipherSpec = new PBEParameterSpec(salt, count);
PBEKeySpec keySpec = new PBEKeySpec(password);
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBEwithMD5andDES");
SecretKey cipherKey = factory.generateSecret(keySpec);
String encodedPassword = encode64(passwordToEncode, "PBEwithMD5andDES", cipherKey, cipherSpec);
System.err.println("Encoded password: MASK-" + encodedPassword);
}
}
