Example usage for javax.crypto Cipher doFinal

List of usage examples for javax.crypto Cipher doFinal

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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:license.rsa.WakeRSA.java

/**
 * rsa/* w  ww .  j  a v  a2 s .c  om*/
 * @param key
 * @return
 * @throws Exception
 */
private static byte[] rsa(byte[] key) throws Exception {
    PublicKey pubKey = readPublicKeyFromFile();
    Cipher cipher = Cipher.getInstance("RSA");
    cipher.init(Cipher.DECRYPT_MODE, pubKey);
    return cipher.doFinal(key);
}

From source file:com.juicioenlinea.application.secutiry.Security.java

public static String desencriptar(String textoEncriptado) {

    final String secretKey = "hunter"; //llave para encriptar datos
    String encryptedString = null;

    try {/* ww w .  j a  v a 2s.  co  m*/
        byte[] message = Base64.decodeBase64(textoEncriptado.getBytes("UTF-8"));
        MessageDigest md = MessageDigest.getInstance("SHA");
        byte[] digestOfPassword = md.digest(secretKey.getBytes("UTF-8"));
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
        SecretKey key = new SecretKeySpec(keyBytes, "DESede");

        Cipher decipher = Cipher.getInstance("DESede");
        decipher.init(Cipher.DECRYPT_MODE, key);

        byte[] plainText = decipher.doFinal(message);

        encryptedString = new String(plainText, "UTF-8");

    } catch (UnsupportedEncodingException | InvalidKeyException | NoSuchAlgorithmException
            | NoSuchPaddingException | IllegalBlockSizeException | BadPaddingException ex) {
        Logger.getLogger(Security.class.getName()).log(Level.SEVERE, null, ex);
    }

    return encryptedString;
}

From source file:com.liferay.sync.engine.lan.util.LanTokenUtil.java

public static String decryptLanToken(String lanTokenKey, String encryptedToken) throws Exception {

    byte[] bytes = DigestUtils.sha1(lanTokenKey);

    bytes = Arrays.copyOf(bytes, 16);

    Cipher cipher = Cipher.getInstance("AES");

    cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(bytes, "AES"));

    return new String(cipher.doFinal(Base64.decodeBase64(encryptedToken)), Charset.forName("UTF-8"));
}

From source file:Main.java

public static byte[] des3EncodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception {

    Key deskey = null;//from  w  w  w  .  jav a  2  s. c  o  m
    DESedeKeySpec spec = new DESedeKeySpec(key);
    SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");
    deskey = keyfactory.generateSecret(spec);

    Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");
    IvParameterSpec ips = new IvParameterSpec(keyiv);
    cipher.init(Cipher.ENCRYPT_MODE, deskey, ips);
    byte[] bOut = cipher.doFinal(data);

    return bOut;
}

From source file:com.formatAdmin.utils.UtilsSecurity.java

public static String decifrarMD5(String textoEncriptado) throws Exception {
    String base64EncryptedString = "";

    try {//from   ww  w  . j  av  a2s.  co m
        byte[] message = Base64.decodeBase64(textoEncriptado.getBytes("utf-8"));
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] digestOfPassword = md.digest(SECRET_MD5_KEY.getBytes("utf-8"));
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
        SecretKey key = new SecretKeySpec(keyBytes, ENCRYPT_ALGORITHM);

        Cipher decipher = Cipher.getInstance(ENCRYPT_ALGORITHM);
        decipher.init(Cipher.DECRYPT_MODE, key);

        byte[] plainText = decipher.doFinal(message);

        base64EncryptedString = new String(plainText, "UTF-8");

    } catch (UnsupportedEncodingException | InvalidKeyException | NoSuchAlgorithmException | BadPaddingException
            | IllegalBlockSizeException | NoSuchPaddingException ex) {
        throw ex;
    }
    return base64EncryptedString;
}

From source file:Main.java

public static String encrypt(String key, String str) throws java.io.UnsupportedEncodingException,
        NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException,
        InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
    String aesKey;// w  w  w.j av  a2 s.c o m
    aesKey = key.substring(0, 16);
    Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");
    c.init(Cipher.ENCRYPT_MODE, AESkey(key), new IvParameterSpec(aesKey.getBytes()));

    byte[] encrypted = c.doFinal(str.getBytes("UTF-8"));
    String enStr = new String(Base64.encodeToString(encrypted, 0));

    return enStr;
}

From source file:ch.helmchen.camlapse.user.control.Encryption.java

public static String decrypt(String aBase64String) throws GeneralSecurityException, IOException {
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
    SecretKey key = keyFactory.generateSecret(new PBEKeySpec(PASSWORD));
    Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
    pbeCipher.init(Cipher.DECRYPT_MODE, key, new PBEParameterSpec(SALT, 20));
    return new String(pbeCipher.doFinal(base64Decode(aBase64String)));
}

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

/**
 * Encrypts string value with the specified AES algorithm
 * @param Data string to be encrypted//from  w w  w  .ja v  a 2  s  .com
 * @return encrypted string
 */
public static String encrypt(String Data) {
    try {
        Key key = generateKey();
        Cipher c = Cipher.getInstance(ALGORITHM);
        c.init(Cipher.ENCRYPT_MODE, key);
        byte[] encVal = c.doFinal(Data.getBytes());
        Base64 encoder = new Base64();
        String encryptedValue = new String(encoder.encode(encVal)).trim();
        return encryptedValue;
    } catch (Exception e) {
        return null;
    }
}

From source file:com.doculibre.constellio.utils.aes.SimpleProtector.java

public static String decrypt(String encryptedValue) throws Exception {
    Key key = generateKey();/*  ww  w.j a v a  2s  .c o m*/
    Cipher c = Cipher.getInstance(ALGORITHM);
    c.init(Cipher.DECRYPT_MODE, key);
    byte[] decordedValue = Base64.decodeBase64(encryptedValue);
    byte[] decValue = c.doFinal(decordedValue);
    String decryptedValue = new String(decValue);
    return decryptedValue;
}

From source file:de.taimos.dvalin.interconnect.model.MessageCryptoUtil.java

/**
 *
 * @param data the BASE 64 data/*from   w  ww  . ja  v a  2 s.c o m*/
 * @return the decrypted data
 * @throws CryptoException on decryption error
 */
public static String decrypt(final String data) throws CryptoException {
    if (data == null) {
        return null;
    }

    try {
        final Cipher cipher = MessageCryptoUtil.getCipher(Cipher.DECRYPT_MODE);
        return new String(cipher.doFinal(Base64.decodeBase64(data)), Charset.forName("UTF-8"));
    } catch (final Exception e) {
        throw new CryptoException("Decryption of data failed!", e);
    }
}