Example usage for javax.crypto Cipher doFinal

Introduction

In this page you can find the example usage for javax.crypto Cipher doFinal.

Prototype

public final byte[] doFinal(byte[] input) throws IllegalBlockSizeException, BadPaddingException

Source Link

Document

Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation.

Usage

From source file:com.jaspersoft.jasperserver.jaxrs.client.core.EncryptionUtils.java

private static String getEncryptedPassword(PublicKey publicKey, String pwd) throws Exception {
    byte[] encryptedUtfPass;
    Cipher enc = Cipher.getInstance("RSA/NONE/NoPadding", new BouncyCastleProvider());
    enc.init(Cipher.ENCRYPT_MODE, publicKey);
    String utfPass = URLEncoder.encode(pwd, CharEncoding.UTF_8);
    encryptedUtfPass = enc.doFinal(utfPass.getBytes());

    return byteArrayToHexString(encryptedUtfPass);
}

From source file:com.tremolosecurity.unison.u2f.util.U2fUtil.java

public static String encode(List<SecurityKeyData> devices, String encyrptionKeyName) throws Exception {
    ArrayList<KeyHolder> keys = new ArrayList<KeyHolder>();
    for (SecurityKeyData dr : devices) {
        KeyHolder kh = new KeyHolder();
        kh.setCounter(dr.getCounter());//from   www  .j  a  va2 s .  c o m
        kh.setEnrollmentTime(dr.getEnrollmentTime());
        kh.setKeyHandle(dr.getKeyHandle());
        kh.setPublicKey(dr.getPublicKey());
        kh.setTransports(dr.getTransports());
        keys.add(kh);
    }

    String json = gson.toJson(keys);
    EncryptedMessage msg = new EncryptedMessage();

    SecretKey key = GlobalEntries.getGlobalEntries().getConfigManager().getSecretKey(encyrptionKeyName);
    if (key == null) {
        throw new Exception("Queue message encryption key not found");
    }

    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, key);
    msg.setMsg(cipher.doFinal(json.getBytes("UTF-8")));
    msg.setIv(cipher.getIV());

    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    DeflaterOutputStream compressor = new DeflaterOutputStream(baos,
            new Deflater(Deflater.BEST_COMPRESSION, true));

    compressor.write(gson.toJson(msg).getBytes("UTF-8"));
    compressor.flush();
    compressor.close();

    String b64 = new String(Base64.encodeBase64(baos.toByteArray()));

    return b64;

}

From source file:Main.java

static String encryptRsaB64(byte[] bytes, Key pubRsaKey) {
    try {//  ww  w  .j  a  va2s . c  om
        Cipher cipher = Cipher.getInstance("RSA/None/PKCS1Padding", "SC");
        // cipher.init(Cipher.ENCRYPT_MODE, pubRsaKey, new SecureRandom());
        SecureRandom sc = null;
        cipher.init(Cipher.ENCRYPT_MODE, pubRsaKey, sc);
        byte[] cipherText = cipher.doFinal(bytes);
        return encodeB64(cipherText);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:com.alliander.osgp.oslp.OslpUtils.java

private static byte[] createEncryptedHash(final byte[] message, final PrivateKey privateKey)
        throws GeneralSecurityException {

    final byte[] hash = createHash(message);

    // Encrypt the hash
    final Cipher cipher = Cipher.getInstance(FALLBACK_CIPHER);
    cipher.init(Cipher.ENCRYPT_MODE, privateKey);
    return cipher.doFinal(hash);
}

From source file:com.avbravo.avbravoutils.crypto.Encriptador.java

public static String encrypt(String key, String cleartext) throws Exception {

    Cipher cipher = Cipher.getInstance(cI);
    SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes(), alg);
    IvParameterSpec ivParameterSpec = new IvParameterSpec(iv.getBytes());
    cipher.init(Cipher.ENCRYPT_MODE, skeySpec, ivParameterSpec);
    byte[] encrypted = cipher.doFinal(cleartext.getBytes());
    return new String(encodeBase64(encrypted));
}

From source file:com.sshutils.utils.CryptHelper.java

public static String decrypt(String strToDecrypt) {
    try {/*from   w w w  . j ava2s  .  com*/

        //                for (Provider provider: Security.getProviders()) {
        //  log.info(provider.getName());
        //  for (String key: provider.stringPropertyNames())
        //   log.info("\t" + key + "\t" + provider.getProperty(key));
        //}

        Cipher cipher = Cipher.getInstance(ENCRYPT_TYPE, "BC");
        final SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
        cipher.init(Cipher.DECRYPT_MODE, secretKey);
        final String decryptedString = new String(cipher.doFinal(Base64.decodeBase64(strToDecrypt)));
        return decryptedString;
    } catch (Exception e) {
        log.error("Error while decrypting", e);

    }
    return null;
}

From source file:br.com.ufjf.labredes.crypto.Cryptography.java

public static byte[] decrypt(byte[] aesKeyEncrypted, PrivateKey privKey) {
    byte[] aesKey = null;
    try {/*  ww  w .j  a  v  a 2  s .  c  o  m*/
        Cipher cipher = Cipher.getInstance(ALGORITHM_ASYM);
        cipher.init(Cipher.DECRYPT_MODE, privKey);
        aesKey = cipher.doFinal(aesKeyEncrypted);

    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return aesKey;
}

From source file:com.amazonaws.cognito.sync.devauth.client.AESEncryption.java

/**
 * Decrypt a cipher in bytes using the specified key
 * // w w w .  j  av  a  2s  .c  om
 * @param cipherBytes encrypted bytes
 * @param key the key used in decryption
 * @param iv
 * @return
 * @throws Exception
 */
public static byte[] decrypt(byte[] cipherBytes, String key, byte[] iv) throws Exception {
    Cipher cipher = Cipher.getInstance(ENCRYPTION_ALGORITHM);
    AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
    params.init(new IvParameterSpec(iv));
    cipher.init(Cipher.DECRYPT_MODE, getKey(key), params);
    return cipher.doFinal(cipherBytes);
}

From source file:com.greenline.hrs.admin.util.encrypt.DESUtil.java

/**
 * Description ?/*from   ww w  .ja v  a  2 s . c om*/
 *
 * @param data
 * @param key  byte
 * @return
 * @throws Exception
 */
private static byte[] decrypt(byte[] data, byte[] key) throws GeneralSecurityException {
    // ????
    SecureRandom sr = new SecureRandom();

    // ?DESKeySpec
    DESKeySpec dks = new DESKeySpec(key);

    // ?DESKeySpec??SecretKey
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);

    // Cipher??
    Cipher cipher = Cipher.getInstance(DES);

    // ?Cipher
    cipher.init(Cipher.DECRYPT_MODE, securekey, sr);

    return cipher.doFinal(data);
}

From source file:com.os.util.PasswordDecoderEncoder.java

public static String decrypt(String encryptPassword) throws Exception {
    Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
    key = convertHexToBytes(keyst);//from   w w w  . jav  a2  s .  co m
    final SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
    cipher.init(Cipher.DECRYPT_MODE, secretKey);
    String encryptedString = new String(cipher.doFinal(Base64.decodeBase64(encryptPassword.getBytes())),
            "UTF-8");
    System.out.println(encryptedString);
    String passwordDecrypted = encryptedString.trim();

    return passwordDecrypted;

}