org.opencb.commons.utils.CryptoUtils.java Source code

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Here is the source code for org.opencb.commons.utils.CryptoUtils.java

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/*
 * Copyright 2015-2017 OpenCB
 *
 * 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.opencb.commons.utils;

//import org.apache.commons.codec.binary.Base64;
//import org.apache.commons.codec.digest.DigestUtils;

import java.security.InvalidKeyException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Base64;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;

/**
 * @author Cristina Yenyxe Gonzalez Garcia <cyenyxe@ebi.ac.uk>
 */
public final class CryptoUtils {

    private CryptoUtils() {
    }

    public static byte[] encryptAES(String strToEncrypt, byte[] key) throws InvalidKeyException,
            NoSuchAlgorithmException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException {
        try {
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
            cipher.init(Cipher.ENCRYPT_MODE, secretKey);
            return Base64.getEncoder().encode(cipher.doFinal(strToEncrypt.getBytes()));
        } catch (NoSuchAlgorithmException | NoSuchPaddingException | IllegalBlockSizeException
                | BadPaddingException ex) {
            Logger.getLogger(CryptoUtils.class.getName()).log(Level.SEVERE, "This should not happen", ex);
            throw ex;
        }
    }

    public static String decryptAES(String strToDecrypt, byte[] key)
            throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException {
        try {
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5PADDING");
            SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
            cipher.init(Cipher.DECRYPT_MODE, secretKey);
            return new String(Base64.getDecoder().decode(strToDecrypt));
        } catch (NoSuchAlgorithmException | NoSuchPaddingException ex) {
            Logger.getLogger(CryptoUtils.class.getName()).log(Level.SEVERE, null, ex);
            throw ex;
        }
    }

    public static byte[] encryptSha1(String strToEncrypt) {
        byte[] digest = null;
        try {
            MessageDigest instance = MessageDigest.getInstance("SHA-256");
            digest = instance.digest(strToEncrypt.getBytes());
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return digest;
    }
}