Android examples for java.security:DES
des Encrypt byte array key and byte array data
//package com.java2s; import javax.crypto.*; import javax.crypto.spec.DESKeySpec; import java.security.*; import java.security.spec.InvalidKeySpecException; public class Main { public static byte[] desEncrypt(byte[] data, byte[] keyData) { return des(Cipher.ENCRYPT_MODE, data, keyData); }/*ww w . jav a 2s. c o m*/ private static byte[] des(int mode, byte[] data, byte[] keyData) { byte[] ret = null; if (data != null && data.length > 0 && keyData != null && keyData.length == 8) { try { Cipher cipher = Cipher.getInstance("DES"); DESKeySpec keySpec = new DESKeySpec(keyData); SecretKeyFactory keyFactory = SecretKeyFactory .getInstance("DES"); SecretKey key = keyFactory.generateSecret(keySpec); cipher.init(mode, key); ret = cipher.doFinal(data); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (NoSuchPaddingException e) { e.printStackTrace(); } catch (IllegalBlockSizeException e) { e.printStackTrace(); } catch (BadPaddingException e) { e.printStackTrace(); } catch (InvalidKeySpecException e) { e.printStackTrace(); } catch (InvalidKeyException e) { e.printStackTrace(); } } return ret; } }