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:club.jmint.crossing.specs.Security.java

public static String desEncrypt(String data, String key) throws CrossException {
    String ret = null;//from   w  w w .j a v a2  s.  c  om
    try {
        DESKeySpec desKey = new DESKeySpec(key.getBytes("UTF-8"));
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey securekey = keyFactory.generateSecret(desKey);

        Cipher cipher = Cipher.getInstance(CIPHER_DES_ALGORITHM);
        SecureRandom random = new SecureRandom();
        cipher.init(Cipher.ENCRYPT_MODE, securekey, random);
        byte[] results = cipher.doFinal(data.getBytes("UTF-8"));
        ret = Base64.encodeBase64String(results);
    } catch (Exception e) {
        CrossLog.printStackTrace(e);
        throw new CrossException(ErrorCode.COMMON_ERR_ENCRYPTION.getCode(),
                ErrorCode.COMMON_ERR_ENCRYPTION.getInfo());
    }
    return ret;
}

From source file:com.hhi.bigdata.platform.push.client.RegisterUtil.java

/**
 * <pre>// w  w w  .j  a va2 s .co  m
 * private key ? app name? ? ? return
 * </pre>
 * @return
 * @throws Exception
 */
private static String getAppNameEnc(PrivateKey privKey, String appName) throws Exception {
    Cipher cipher = Cipher.getInstance("RSA");
    cipher.init(Cipher.ENCRYPT_MODE, privKey);

    return Base64.encodeBase64String(cipher.doFinal(appName.getBytes()));
}

From source file:com.app.utils.StringEncrypt.java

/**
 * Funcin de tipo String que recibe una llave (key), un vector de inicializacin (iv)
 * y el texto que se desea cifrar/*from  www.ja v a 2s .  c  o  m*/
 * @param key la llave en tipo String a utilizar
 * @param iv el vector de inicializacin a utilizar
 * @param cleartext el texto sin cifrar a encriptar
 * @return el texto cifrado en modo String
 * @throws Exception puede devolver excepciones de los siguientes tipos: NoSuchAlgorithmException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException, NoSuchPaddingException
 */
public static String encrypt(String key, String iv, 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.servoy.j2db.util.SecuritySupport.java

@SuppressWarnings("nls")
public static String encrypt(Settings settings, String value) throws Exception {
    if (value == null)
        return value;
    Cipher cipher = Cipher.getInstance("DESede");
    cipher.init(Cipher.ENCRYPT_MODE, SecuritySupport.getCryptKey(settings));
    return Utils.encodeBASE64(cipher.doFinal(value.getBytes()));
}

From source file:io.stallion.utils.Encrypter.java

private static String doDecryptString(String password, String encryptedBase32) throws Exception {
    encryptedBase32 = StringUtils.strip(encryptedBase32, "=");
    String salt = encryptedBase32.substring(0, 16);
    String ivString = encryptedBase32.substring(16, 48);
    byte[] iv = new byte[0];
    try {/*w ww.  ja  v  a2  s. c o m*/
        iv = Hex.decodeHex(ivString.toCharArray());
    } catch (DecoderException e) {
        throw new RuntimeException(e);
    }
    encryptedBase32 = encryptedBase32.substring(48);
    Base32 decoder = new Base32();
    byte[] encrypted = decoder.decode(encryptedBase32.toUpperCase());
    SecretKeySpec skeySpec = makeKeySpec(password, salt);

    /*
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    cipher.init(Cipher.DECRYPT_MODE, skeySpec,
            new IvParameterSpec(iv));
      */
    Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
    cipher.init(Cipher.DECRYPT_MODE, skeySpec, new GCMParameterSpec(128, iv));

    byte[] original = cipher.doFinal(encrypted);
    return new String(original, Charset.forName("UTF-8"));

}

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

public static Object decrypt(String encryptedObject, byte[] aesKey) {
    Object object = null;//from   w w w  .  j ava 2s .  com
    SecretKeySpec secretKey = new SecretKeySpec(aesKey, ALGORITHM_SYM);
    try {
        byte[] cipherText = new BASE64Decoder().decodeBuffer(encryptedObject);
        Cipher cipher = Cipher.getInstance(ALGORITHM_SYM);
        cipher.init(Cipher.DECRYPT_MODE, secretKey);
        byte[] serialized_obj = cipher.doFinal(cipherText);
        object = (Object) SerializationUtils.deserialize(serialized_obj);
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return object;
}

From source file:com.imaginary.home.cloud.Configuration.java

static public @Nonnull String encrypt(@Nonnull String keySalt, @Nonnull String value) {
    try {/*from  w ww  .j a va2  s  . co  m*/
        SecretKeySpec spec = new SecretKeySpec(getConfiguration().getCustomSalt(keySalt), "AES");
        Cipher cipher = Cipher.getInstance("AES");

        cipher.init(Cipher.ENCRYPT_MODE, spec);

        byte[] raw = value.getBytes("utf-8");
        byte[] encrypted = cipher.doFinal(raw);
        byte[] b64 = Base64.encodeBase64(encrypted);
        return new String(b64, "utf-8");
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

From source file:com.netcrest.pado.internal.security.AESCipher.java

private static byte[] encryptBinaryToBinary(byte[] privateKeyEncrypted, byte[] clearBinary) throws Exception {
    SecretKeySpec skeySpec = new SecretKeySpec(privateKeyEncrypted, "AES");

    // Instantiate the cipher
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
    byte[] encrypted = cipher.doFinal(clearBinary);
    return encrypted;
}

From source file:com._64bitlabs.util.Encryptors.java

/**
 * Given AES encryption algorithm, decrypts the string value.
 * @param encryptedData/*from w w  w  .j  a v a 2 s  .c  o  m*/
 * @return decrypted String
 */
public static String decrypt(String encryptedData) {
    Key key = generateKey();
    try {
        Cipher c = Cipher.getInstance(ALGORITHM);
        c.init(Cipher.DECRYPT_MODE, key);

        Base64 dec = new Base64();
        byte[] decodedValue = dec.decode(encryptedData.getBytes());
        byte[] decValue = c.doFinal(decodedValue);

        return new String(decValue);
    } catch (Exception e) {
        return null;
    }
}

From source file:ec.edu.uce.medicina.seguimiento.util.EncryptionUtility.java

/**
 *Mtodo que permite la encriptacin de la contrasea.
 * @param cleartext/*  w w w  .  j  ava2 s. co m*/
 * @return
 * @throws java.lang.Exception
 */
public static String encrypt(String cleartext) throws Exception {
    String key = "02AE31B79CCCB2A3"; //llave
    String iv = "0123456789ABCDEF";
    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));
}