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:com.sds.acube.ndisc.mts.xserver.util.XNDiscCipher.java

/**
 * /* ww  w  .  j  a  va  2 s . c om*/
 * 
 * @param data ? ?
 * @return ? ?
 */
public static String decode(String data) {
    try {
        Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
        cipher.init(Cipher.DECRYPT_MODE, key);
        byte d[] = cipher.doFinal(Base64.decodeBase64(data.getBytes("UTF-8")));
        return replaceChar(new String(d));
    } catch (NoSuchAlgorithmException e) {
        System.err.print(XNDiscUtils.printStackTrace(e));
    } catch (NoSuchPaddingException e) {
        System.err.print(XNDiscUtils.printStackTrace(e));
    } catch (IOException e) {
        System.err.print(XNDiscUtils.printStackTrace(e));
    } catch (InvalidKeyException e) {
        System.err.print(XNDiscUtils.printStackTrace(e));
    } catch (IllegalBlockSizeException e) {
        System.err.print(XNDiscUtils.printStackTrace(e));
    } catch (BadPaddingException e) {
        System.err.print(XNDiscUtils.printStackTrace(e));
    }
    return null;
}

From source file:de.fhdo.helper.DES.java

public static String encrypt(String Text) {
    try {//from   w  w  w. j  av  a 2  s  .c o m
        DESKeySpec keySpec = new DESKeySpec("schluessel_stdrepository15".getBytes("UTF8"));
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey key = keyFactory.generateSecret(keySpec);

        // ENCODE plainTextPassword String
        byte[] cleartext = Text.getBytes("UTF8");
        Cipher cipher = Cipher.getInstance("DES");
        // cipher is not thread safe
        cipher.init(Cipher.ENCRYPT_MODE, key);
        return Base64.encodeBase64URLSafeString(cipher.doFinal(cleartext));

    } catch (Exception e) {
        e.printStackTrace();
    }

    return "";
}

From source file:encryptdecrypt.util.Security.java

public static String decrypt(String strToDecrypt) {
    try {//from ww  w  .j  a v a2s . c om
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5PADDING");
        final SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
        cipher.init(Cipher.DECRYPT_MODE, secretKey);
        return new String(cipher.doFinal(Base64.decodeBase64(strToDecrypt.getBytes())));
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:BD.Encriptador.java

public static String Encriptar(String texto) {

    String secretKey = "qualityinfosolutions"; //llave para encriptar datos
    String base64EncryptedString = "";

    try {//from ww w  . j  av  a  2 s.c  om

        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] digestOfPassword = md.digest(secretKey.getBytes("utf-8"));
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);

        SecretKey key = new SecretKeySpec(keyBytes, "DESede");
        Cipher cipher = Cipher.getInstance("DESede");
        cipher.init(Cipher.ENCRYPT_MODE, key);

        byte[] plainTextBytes = texto.getBytes("utf-8");
        byte[] buf = cipher.doFinal(plainTextBytes);
        byte[] base64Bytes = Base64.encodeBase64(buf);
        base64EncryptedString = new String(base64Bytes);

    } catch (Exception ex) {
    }
    return base64EncryptedString;
}

From source file:Main.java

public static byte[] DESTemplet(byte[] data, byte[] key, String algorithm, String transformation,
        boolean isEncrypt) {
    try {//  w w w .  j a va  2s .co m
        SecretKeySpec keySpec = new SecretKeySpec(key, algorithm);
        Cipher cipher = Cipher.getInstance(transformation);
        SecureRandom random = new SecureRandom();
        cipher.init(isEncrypt ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, keySpec, random);
        return cipher.doFinal(data);
    } catch (Throwable e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static byte[] desTemplate(byte[] data, byte[] key, String algorithm, String transformation,
        boolean isEncrypt) {
    if (data == null || data.length == 0 || key == null || key.length == 0)
        return null;
    try {// w w  w  .  j a va 2  s  .  co m
        SecretKeySpec keySpec = new SecretKeySpec(key, algorithm);
        Cipher cipher = Cipher.getInstance(transformation);
        SecureRandom random = new SecureRandom();
        cipher.init(isEncrypt ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, keySpec, random);
        return cipher.doFinal(data);
    } catch (Throwable e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

private static byte[] Des(byte[] byteData, byte[] byteKey, int opmode)
        throws InvalidKeyException, NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException,
        IllegalBlockSizeException, BadPaddingException {
    Cipher cipher = null;
    try {//from w w  w.j  a v  a 2 s.  c o  m
        SecretKeySpec desKey = new SecretKeySpec(byteKey, "DES");

        cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
        cipher.init(opmode, desKey);

        return cipher.doFinal(byteData);
    } finally {
        cipher = null;
    }
}

From source file:ar.gob.ambiente.servicios.gestionpersonas.entidades.util.CriptPass.java

/**
 * Mtodo para desencriptar una contrasea encriptada
 * @param textoEncriptado//w  ww.j  a v  a  2s.  c  o  m
 * @return
 * @throws Exception 
 */
public static String desencriptar(String textoEncriptado) throws Exception {

    String secretKey = "zorbazorbas"; //llave para encriptar datos
    String base64EncryptedString = "";

    try {
        byte[] message = Base64.decodeBase64(textoEncriptado.getBytes("utf-8"));
        MessageDigest md = MessageDigest.getInstance("MD5");
        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);

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

    } catch (UnsupportedEncodingException | NoSuchAlgorithmException | NoSuchPaddingException
            | InvalidKeyException | IllegalBlockSizeException | BadPaddingException ex) {
        System.out.println(ex.getMessage());
    }
    return base64EncryptedString;
}

From source file:com.example.license.RSAUtil.java

public static String decrypt(String data, PublicKey pub_key) throws Exception {
    Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
    // ?Cipher?/*w  w w . j a  v a  2  s.  c om*/
    cipher.init(Cipher.DECRYPT_MODE, pub_key);
    // ?
    return new String(cipher.doFinal(Base64.decodeBase64(data)));
}

From source file:com.aerohive.nms.engine.admin.task.licensemgr.license.processor2.PacketUtil.java

private static byte[] decryptData(byte[] bInput) {
    byte[] outBytes = null;
    try {//from   w w w . j a v a2  s. c  om
        Key key = new SecretKeySpec(secret_key, "DESede");

        Cipher cipher = Cipher.getInstance("DESede", "SunJCE");

        cipher.init(Cipher.DECRYPT_MODE, key, cipher.getParameters());

        outBytes = cipher.doFinal(bInput);

    } catch (Exception ex) {
        //log.error("PacketUtil",ex.getMessage(), ex);
        return outBytes;
    }

    return outBytes;
}