org.sonar.runner.impl.SaltedAesCryptor.java Source code

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Here is the source code for org.sonar.runner.impl.SaltedAesCryptor.java

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/*
 * SonarQube Runner - Implementation
 * Copyright (C) 2011 SonarSource
 * dev@sonar.codehaus.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.runner.impl;

import org.apache.commons.codec.binary.Base64;

import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.security.MessageDigest;
import java.security.spec.AlgorithmParameterSpec;
import java.util.UUID;

//import com.jinvis.cherry.common.SaltedAesCryptor;
//import com.jinvis.cherry.common.SaltedAesCryptorFactory;

public class SaltedAesCryptor {
    private int keySize = 16;
    byte[] keyBytes = new byte[keySize];
    private String algorithm = "AES/CBC/PKCS5Padding";

    private SecretKeySpec secretKeySpec;
    private AlgorithmParameterSpec algorithmParameterSpec;

    public SaltedAesCryptor(String encKey) throws Exception {
        MessageDigest digest = MessageDigest.getInstance("MD5");
        digest.update(encKey.getBytes("UTF-8"));
        System.arraycopy(digest.digest(), 0, keyBytes, 0, keyBytes.length);

        this.secretKeySpec = new SecretKeySpec(keyBytes, "AES");
        byte[] iv = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
        algorithmParameterSpec = new IvParameterSpec(iv);
    }

    public String encrypt(String plainText) throws Exception {
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, algorithmParameterSpec);
        String salt = UUID.randomUUID().toString().substring(0, 8);
        byte[] bytes = (salt + plainText).getBytes("UTF-8");
        byte[] encrypted = cipher.doFinal(bytes);
        return new String(Base64.encodeBase64(encrypted));
    }

    public String decrpyt(String encText) throws Exception {
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, algorithmParameterSpec);
        byte[] bytes = Base64.decodeBase64(encText);
        byte[] nBytes;

        String decText = "";
        String secretText = "";
        String parsedText = "";

        try {
            nBytes = cipher.doFinal(bytes);
            secretText = new String(nBytes, "UTF-8");
            try {
                parsedText = secretText.substring(8);
                decText = parsedText;
            } catch (StringIndexOutOfBoundsException e) {
                decText = secretText;
            } catch (Exception e) {
                e.addSuppressed(new Exception("Error"));
                throw e;
            }
        } catch (IllegalBlockSizeException e) {
            Logs.info("Not encrypted security phrase");
            decText = encText;
        }

        return decText;
    }
}