Example usage for javax.crypto Cipher ENCRYPT_MODE

Introduction

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

Prototype

int ENCRYPT_MODE

To view the source code for javax.crypto Cipher ENCRYPT_MODE.

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Document

Constant used to initialize cipher to encryption mode.

Usage

From source file:com.cherong.mock.common.base.util.EncryptionUtil.java

/**
 * deskey/*from   w w  w.j a va 2  s .  c om*/
 * 
 * @param content
 * @param key
 * @return
 * @throws Exception
 */
public static byte[] encryptByDES(String content, String key) {
    try {
        DESKeySpec dks = new DESKeySpec(key.getBytes());
        SecretKeyFactory skf = SecretKeyFactory.getInstance("DES");
        SecretKey sk = skf.generateSecret(dks);
        Cipher cip = Cipher.getInstance(DES_CIPHER_ALGORITHM);
        cip.init(Cipher.ENCRYPT_MODE, sk);
        return cip.doFinal(content.getBytes());
    } catch (Exception e) {
        LOGGER.error("{}", e);
        return null;
    }

}

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From source file:br.com.vectorx.BlowfishCryptox.java

/**
 * Construtor private. Define o tamanho mximo da palavra salt de acordo com
 * o SecurityPolice instalado/*from  w w  w  .  j  av  a2 s  . c o  m*/
 * 
 * @param palavraChave
 *            Palavra chave
 * @param algoritmo
 *            Algoritmo a ser utilizado (no caso o Blowfish)
 * @param cifraCesar
 *            em quantos numeros os caracteres sero trocados
 * @param charset
 * @throws IllegalArgumentException
 */
private BlowfishCryptox(String palavraChave, String algoritmo, int cifraCesar, Charset charset)
        throws IllegalArgumentException {
    try {
        int maxSalt = LIMITEDSALTLENGTH;
        // Checagem para ver se tem JCE Unlimited Strength Policy instalado
        if (Cipher.getMaxAllowedKeyLength(algoritmo) > BlowfishCryptox.CIFRAMAX) {
            maxSalt = BlowfishCryptox.UNLIMITEDJCESALT;
        }
        validateInput(palavraChave, cifraCesar, maxSalt);
        this.charset = charset;
        SecretKey chave = new SecretKeySpec(palavraChave.getBytes(charset), algoritmo);
        this.encrypt = Cipher.getInstance(algoritmo);
        this.decrypt = Cipher.getInstance(algoritmo);
        this.encrypt.init(Cipher.ENCRYPT_MODE, chave);
        this.decrypt.init(Cipher.DECRYPT_MODE, chave);
        this.cifraCesar = cifraCesar;
    } catch (Exception e) {
        throw new IllegalArgumentException(e);
    }
}

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From source file:com.springcryptoutils.core.cipher.symmetric.CiphererWithStaticKeyImpl.java

/**
 * Encrypts/decrypts a message based on the underlying mode of operation.
 *
 * @param message if in encryption mode, the clear-text message, otherwise
 *        the message to decrypt// w  w  w.j a  v  a2 s.c o m
 * @return if in encryption mode, the encrypted message, otherwise the
 *         decrypted message
 * @throws SymmetricEncryptionException on runtime errors
 * @see #setMode(Mode)
 */
public byte[] encrypt(byte[] message) {
    try {
        final Cipher cipher = (((provider == null) || (provider.length() == 0))
                ? Cipher.getInstance(cipherAlgorithm)
                : Cipher.getInstance(cipherAlgorithm, provider));
        switch (mode) {
        case ENCRYPT:
            cipher.init(Cipher.ENCRYPT_MODE, keySpec, initializationVectorSpec);
            break;
        case DECRYPT:
            cipher.init(Cipher.DECRYPT_MODE, keySpec, initializationVectorSpec);
            break;
        default:
            throw new SymmetricEncryptionException(
                    "error encrypting/decrypting message: invalid mode; mode=" + mode);
        }
        return cipher.doFinal(message);
    } catch (Exception e) {
        throw new SymmetricEncryptionException("error encrypting/decrypting message; mode=" + mode, e);
    }
}

---

From source file:com.bamboocloud.im.provisioner.json.crypto.simple.SimpleEncryptor.java

/**
 * Encrypts using an asymmetric cipher.//from   www . ja va 2  s  .  com
 *
 * @param value the value to be encrypted.
 * @return the encrypted value.
 * @throws GeneralSecurityException if a cryptographic operation failed.
 * @throws IOException if an I/O exception occurred.
 */
private Object asymmetric(Object object) throws GeneralSecurityException, IOException {
    String symmetricCipher = "AES/ECB/PKCS5Padding"; // no IV required for randomly-generated session key
    KeyGenerator generator = KeyGenerator.getInstance("AES");
    generator.init(128);
    SecretKey sessionKey = generator.generateKey();
    Cipher symmetric = Cipher.getInstance(symmetricCipher);
    symmetric.init(Cipher.ENCRYPT_MODE, sessionKey);
    String data = Base64.encodeBase64String(symmetric.doFinal(mapper.writeValueAsBytes(object)));
    Cipher asymmetric = Cipher.getInstance(cipher);
    asymmetric.init(Cipher.ENCRYPT_MODE, key);
    HashMap<String, Object> keyObject = new HashMap<String, Object>();
    keyObject.put("cipher", this.cipher);
    keyObject.put("key", this.alias);
    keyObject.put("data", Base64.encodeBase64String(asymmetric.doFinal(sessionKey.getEncoded())));
    HashMap<String, Object> result = new HashMap<String, Object>();
    result.put("cipher", symmetricCipher);
    result.put("key", keyObject);
    result.put("data", data);
    return result;
}

---

From source file:org.jasig.cas.web.flow.CasFlowExecutionKeyFactory.java

protected String encrypt(final String value) {
    if (value == null) {
        return null;
    }//  www. j a  v a 2  s  .c o m

    try {
        final Cipher cipher = Cipher.getInstance(this.cipherAlgorithm);
        cipher.init(Cipher.ENCRYPT_MODE, this.key, this.ivs);
        return byteArrayToHexString(cipher.doFinal(value.getBytes()));
    } catch (final Exception e) {
        throw new RuntimeException(e);
    }
}

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From source file:com.diona.fileReader.CipherUtil.java

/**
 * Encrypts the given string (plaintext).
 * /*from w  w w  .  ja  v a 2s .c o m*/
 * @param bytes
 *          byte array to be encrypted.
 * @param context
 *          context to fetch preferences.
 * @return encrypted byte array.
 */
@SuppressLint("TrulyRandom")
public byte[] encryptBytes(final byte[] bytes, final Context context) {

    // Transaction.checkLongRunningProcessing("encryptBytes");

    if (!ENCRYPTION_ENABLED) {
        return bytes;
    }

    byte[] encryptedTextBytes = null;
    try {
        // Derive the secret key
        final SecretKeySpec secretKey = getSecretKey(context);

        // encrypt the message
        final Cipher cipher = Cipher.getInstance(ENCRYPTION_ALGORITHM);
        final IvParameterSpec ivspec = new IvParameterSpec(getIV(context));
        cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivspec);
        encryptedTextBytes = cipher.doFinal(bytes);
    } catch (final Exception e) {
        Log.e(TAG, "" + e);
    }
    return encryptedTextBytes;
}

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From source file:com.aqnote.shared.encrypt.symmetric.Blowfish.java

/**
 * ?CipherdoFinal?reset ???/*from   ww w  . j a va 2  s. c  o  m*/
 * 
 * @param b
 *            ?
 * @return ?
 * @throws IllegalBlockSizeException
 * @throws BadPaddingException
 */
public synchronized static byte[] encrypt(byte[] b) throws IllegalBlockSizeException, BadPaddingException {
    byte[] buffer = null;
    initCipher(encryptCipher, Cipher.ENCRYPT_MODE, key, iv);
    buffer = encryptCipher.doFinal(b);
    return buffer;
}

---

From source file:models.logic.CipherDecipher.java

public static void encryptOrDecrypt(SecretKey key, int mode, InputStream is, OutputStream os) throws Throwable {
    Cipher cipher = Cipher.getInstance("AES");
    if (mode == Cipher.ENCRYPT_MODE) {
        cipher.init(Cipher.ENCRYPT_MODE, key);
        CipherInputStream cis = new CipherInputStream(is, cipher);
        doCopy(cis, os);/* w  w w  . j a v a 2 s  .  c  om*/
    } else if (mode == Cipher.DECRYPT_MODE) {
        cipher.init(Cipher.DECRYPT_MODE, key);
        CipherOutputStream cos = new CipherOutputStream(os, cipher);
        doCopy(is, cos);
    }
}

---

From source file:JavaTron.JTP.java

/**
 * Encrypts a string//from w  ww  .  ja  v a2  s  . co m
 * @param property
 * @return An encrypted string
 */
public static String encrypt(String property) {
    String p = new String();
    try {
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
        SecretKey key = keyFactory.generateSecret(new PBEKeySpec(PASSWORD));
        Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
        pbeCipher.init(Cipher.ENCRYPT_MODE, key, new PBEParameterSpec(SALT, 20));
        p = base64Encode(pbeCipher.doFinal(property.getBytes()));
    } catch (Exception e) {
        e.printStackTrace();
    }
    return p;
}

---

From source file:ai.serotonin.backup.Backup.java

private File encryptFile(final File file) throws Exception {
    final SecureRandom random = new SecureRandom();
    final byte[] salt = random.generateSeed(8);
    final String saltStr = Hex.encodeHexString(salt);

    final SecretKey secret = createSecretKey(salt);

    final Cipher cipher = createCipher();
    cipher.init(Cipher.ENCRYPT_MODE, secret);
    final AlgorithmParameters params = cipher.getParameters();
    final byte[] iv = params.getParameterSpec(IvParameterSpec.class).getIV();
    final String ivStr = Hex.encodeHexString(iv);

    final File encryptedFile = new File(file.getParent(), saltStr + "_" + ivStr + "_" + file.getName());

    cipherizeFile(file, encryptedFile, cipher);

    file.delete();/*from  ww  w.j  a v  a  2s.c o m*/

    LOG.info("Encrypted backup file to " + encryptedFile.getPath() + ", "
            + FileUtils.byteCountToDisplaySize(encryptedFile.length()));
    return encryptedFile;
}

---

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