UnityPicoXRSDK获取设备SN号，加密，读取文本功能（PicoVRSDK弃用）(使用PICO Unity Integration SDK))，Pvr升级XR注意事项_pico neo3获取不到sn

由于Pico老版本VRSDK不支持新设备(其实是支持到了Neo3/Neo3Pro，虽然Pvr_UnitySDKAPI仍然可以用，但对于获取设备SN号，加密和读取文本等使用Pvr_UnitySDKAPI的功能已经失效)，全面更新为UnityXR，故重新写了一套Android端的设备加密读取SN号解密功能。

请注意，由于Unity2021.2已经不允许直接把res文件放在Plugins/Android目录下，有一种说法是全面使用aar，故对于老版本PvrAPI开发的项目升级XRSDK来说最好还是使用Unity2020.3.21-2021.2之间的版本。另外，Pico官方给的SDK需要外部加载。

获取SN号(本项目使用的版本为Unity2020.3.32)

与以前的Pvr不同的是目前需要绑定设备

        PXR_Enterprise.InitEnterpriseService();
        PXR_Enterprise.BindEnterpriseService(toBServiceBind);
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获取代码：

		return PXR_Enterprise.StateGetDeviceInfo(SystemInfoEnum.EQUIPMENT_SN);
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adb.devices可以PC获取设备SN，但是下面这种方式不行了：
源生安卓代码调用设备SN号无法获取！(Neo3之后的设备，G2和Neo2仍然可以)

            AndroidJavaObject jo = new AndroidJavaObject("android.os.Build");
            string serial = jo.GetStatic<string>("SERIAL");
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加密解密

public static class EncryptDecrypt
{
    //加解密密钥,字符串长度必须为8（自定义）
    public static string key = "11111111";
    //加密
    public static string DESEnCode(string pToEncrypt)
    {
        DESCryptoServiceProvider des = new DESCryptoServiceProvider();
        byte[] inputByteArray = Encoding.GetEncoding("UTF-8").GetBytes(pToEncrypt);
        try
        {
            des.Key = ASCIIEncoding.ASCII.GetBytes(key);
            des.IV = ASCIIEncoding.ASCII.GetBytes(key);
        }
        catch (Exception)
        {
            UnityEngine.Debug.Log("加密时密钥格式错误！");
            return null;
        }
        MemoryStream ms = new MemoryStream();
        CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
        try
        {
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
        }
        catch (Exception)
        {
            UnityEngine.Debug.Log("加密错误！");
            return null;
        }
        StringBuilder ret = new StringBuilder();
        foreach (byte b in ms.ToArray())
        {
            ret.AppendFormat("{0:X2}", b);
        }
        ret.ToString();
        return ret.ToString();
    }
    //解密
    public static string DESDeCode(string pToDecrypt)
    {
        DESCryptoServiceProvider des = new DESCryptoServiceProvider();
        byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
        for (int x = 0; x < pToDecrypt.Length / 2; x++)
        {
            int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
            inputByteArray[x] = (byte)i;
        }
        try
        {
            des.Key = ASCIIEncoding.ASCII.GetBytes(key);
            des.IV = ASCIIEncoding.ASCII.GetBytes(key);
        }
        catch (Exception)
        {
            UnityEngine.Debug.Log("解密时密钥格式错误！");
            return null;
        }
        MemoryStream ms = new MemoryStream();
        CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
        try
        {
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
        }
        catch (Exception)
        {
            UnityEngine.Debug.Log("解密错误");
            return null;
        }
        StringBuilder ret = new StringBuilder();
        return Encoding.Default.GetString(ms.ToArray());
    }
    private static int getNewSeed()
    {
        byte[] rndBytes = new byte[4];
        System.Security.Cryptography.RNGCryptoServiceProvider rng = new System.Security.Cryptography.RNGCryptoServiceProvider();
        rng.GetBytes(rndBytes);
        return BitConverter.ToInt32(rndBytes, 0);
    }
    public static string GetRandomString(int len)
    {
        string s = "123456789abcdefghijklmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ";
        string reValue = string.Empty;
        Random rnd = new Random(getNewSeed());
        while (reValue.Length < len)
        {
            string s1 = s[rnd.Next(0, s.Length)].ToString();
            if (reValue.IndexOf(s1) == -1) reValue += s1;
        }
        return reValue;
    }
}
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	string setAName = "A";
    string setBName = "B";
    string setKey = "11111111";//加密秘钥
    private string 内部存储文件内容="";
    private string 设备SN号 = "";
    
    //获取激活码
    string GetCode(string AName , string BName , string key)
    {
        EncryptDecrypt.key = key;
        return EncryptDecrypt.DESEnCode(AName + "/" + BName + "/" + 设备SN号);
    }
    //判断
   	
	if (内部存储文件内容.Contains(GetCode(setAName , setBName , setKey)))
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读取设备里的文件

两种方式:
1.安装后安卓自动安装的源生文件夹内部的文件

    /// <summary>
    /// 获取Pico下的文件（安装后的Android源生文件夹）
    /// </summary>
    void GetTxt_Fun1()     //目标路径:"/storage/emulated/0/Android/data/com.XX(包名)/files";
    {
        Debug.Log(Application.persistentDataPath);
        string filePath = Application.persistentDataPath + "/k.txt";
        if (File.Exists(filePath))
        {
            string[] fileData = File.ReadAllLines(filePath);
            text.text = fileData[0];
        }
    }
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2.外部指定文件夹内的文件

    /// <summary>
    /// 获取Pico下的文件，指定文件夹
    /// </summary>
    void GetTxt_Fun2() //目标路径:"/storage/emulated/0/XXX/k2.txt";
    {
        string filePath = "/storage/emulated/0/XXX" + "/k2.txt";
        if (File.Exists(filePath))
        {
            string[] fileData = File.ReadAllLines(filePath);
            text.text = fileData[0];
        }
    }
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需要请求安卓权限

  <!--payment-->
  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  <!--falcon VIBRATE-->
  <uses-permission android:name="android.permission.VIBRATE" />
  <!--Miracast -->
  <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
  <!--read config-->
  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.WRITE_MEDIA_STORAGE" />
  <!--set bright -->
  <uses-permission android:name="android.permission.WRITE_SETTINGS" />
  <!--AvrAPI -->
  <uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS" />
  <!--change language -->
  <uses-permission android:name="android.permission.CHANGE_CONFIGURATION" />
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github地址：https://github.com/007HaHaXiaoZi/PicoXRSDK