关于某APP注册机破解遇到FormatFaApplocks的疑问

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de代码

[Java] 纯文本查看 复制代码

public static String de(String paramString)
    throws Exception
  {
    if ("FormatFaApplocks" == null) {}
    try
    {
      return (String)null;
    }
    catch (Exception paramString)
    {
      SecretKeySpec localSecretKeySpec;
      Cipher localCipher;
      System.out.println(paramString.toString());
    }
    if ("FormatFaApplocks".length() != 16) {
      return (String)null;
    }
    localSecretKeySpec = new SecretKeySpec("FormatFaApplocks".getBytes("ASCII"), "AES");
    localCipher = Cipher.getInstance("AES");
    localCipher.init(2, localSecretKeySpec);
    paramString = hex2byte(paramString);
    try
    {
      paramString = new String(localCipher.doFinal(paramString));
      return paramString;
    }
    catch (Exception paramString)
    {
      System.out.println(paramString.toString());
      paramString = (String)null;
      return paramString;
    }
    return (String)null;
  }

en代码

[Java] 纯文本查看 复制代码

  public static String en(String paramString)
    throws Exception
  {
    if ("FormatFaApplocks" == null) {
      return (String)null;
    }
    if ("FormatFaApplocks".length() != 16) {
      return (String)null;
    }
    SecretKeySpec localSecretKeySpec = new SecretKeySpec("FormatFaApplocks".getBytes("ASCII"), "AES");
    Cipher localCipher = Cipher.getInstance("AES");
    localCipher.init(1, localSecretKeySpec);
    return byte2hex(localCipher.doFinal(paramString.getBytes())).toLowerCase();
  }

FormatFaApplocks
Format后边不应该是串数字么，FaApplocks又代表啥

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没人知道，还是问题太小白了。求告知