J2ME? Personal Profileで暗号/複合処理

  /**
   * 暗号化
   */
  private static byte[] encrypt(String key, String text) throws Exception {
    SecretKeySpec sksSpec = new SecretKeySpec(key.getBytes(), "DES");
    Cipher cipher = Cipher.getInstance("DES");    
    cipher.init(javax.crypto.Cipher.ENCRYPT_MODE, sksSpec);
    byte[] encrypted = cipher.doFinal(text.getBytes());
    return encrypted;
  }

  /**
   * 復元化
   */
  private static String decrypt(String key, byte[] encrypted) throws Exception {
    SecretKeySpec sksSpec = new SecretKeySpec(key.getBytes(), "DES");
    Cipher cipher = javax.crypto.Cipher.getInstance("DES");
    cipher.init(javax.crypto.Cipher.DECRYPT_MODE, sksSpec);
    byte[] decrypted = cipher.doFinal(encrypted);
    return new String(decrypted);
  }