static void EncryptVideo(MenuCommand cmd)
{
//获取选择文件夹的路径
string[] str = Selection.assetGUIDs;
string path = AssetDatabase.GUIDToAssetPath(str[0]);
string newPath = Application.dataPath + "/StreamingAssets/videoNew";
FileTools.CreateDirectory(newPath);
//获取指定路径下的指定类型资源
DirectoryInfo root = new DirectoryInfo(path);
FileInfo[] files = root.GetFiles("*.mp4");
Rijndael rij = new Rijndael();
RijndaelKey rijKey = rij.CreateKeyAndIV(newPath);
for (int i = 0; i < files.Length; i++)
{
byte[] enBytes = rij.Encrypt(FileTools.ReadFile(files[i].FullName), rijKey.key, rijKey.IV);
string strWriteFile = newPath + "/" + files[i].Name;
FileTools.CreateFile(strWriteFile, enBytes);
EditorUtility.DisplayProgressBar("进度", i + "/" + files.Length + "完成修改值", (float)i / files.Length);
}
EditorUtility.ClearProgressBar();
AssetDatabase.Refresh();
}