Unity3d Resource Packaging encryption

Resource packaging script, placed under the Assets\editor folder

Using Unityengine;

Using System.Collections;

Using Unityeditor;

Using System.IO;

public class Assetpack:editor

{

[MenuItem ("Custom editor/save Scene2")]

static void Exportresource ()

{

Bring up Save panel

String path = Editorutility.savefilepanel ("Save Resource", "", "New Resource", "Unity3d");

if (path. Length! = 0)

{

Build the resource file from the active selection.

object[] selection = selection.getfiltered (typeof (Object), selectionmode.deepassets);

Buildpipeline.buildassetbundle (Selection.activeobject, Selection, Path,

buildassetbundleoptions.collectdependencies | Buildassetbundleoptions.completeassets);

Selection.objects = Selection;

}

}

[MenuItem ("Custom editor/make unity3d file to bytes file")]

static void Exportresourcenotrackss ()

{

object[] selection = selection.getfiltered (typeof (Object), selectionmode.deepassets);

foreach (Object obj in selection)

{

String path1 = Assetdatabase.getassetpath (obj);

FileStream fs = new FileStream (path1, FileMode.Open, FileAccess.ReadWrite);

byte[] buff = new Byte[fs. Length];

Fs. Read (Buff, 0, (int) fs. Length);

string password = "LLH";

Packxor (buff, buff. Length, password);

Debug.Log ("filelength:" + buff. Length);

Fs. Close ();

String binpath = path1. Substring (0, path1. LastIndexOf ('. ')) + ". Bytes";

FileStream cfs = new FileStream (BinPath, FileMode.Create);

Cfs. Write (buff, 0, buff. Length);

Debug.Log ("filelength:" + buff. Length);

Buff = null;

Cfs. Close ();

}

}

static void Packxor (byte[] _data, int _len, string _pstr)

{

int length = _len;

int strcount = 0;

for (int i = 0; i < length; ++i)

{

if (Strcount >= _pstr. Length)

Strcount = 0;

_data[i] ^= (byte) _pstr[strcount++];

}

}

}

The menu will appear two sub-menus, the resources to be packaged into prefab, select the resources, then the menu custom Editor/save Scene2 Enter the name of the newly generated file, then select the newly generated file, click the menu custom Editor/make Unity3d File to bytes file input name

Another file is generated, then click on the file, the menu named Editor/save Scene2, so that the package encryption is OK

That is, after packaging Assetbundle encryption and repackaging Assetbundle(Can I encrypt the package directly?). Obviously not, Loadbundle will re-create the Assetbundle through the decrypted bytes when loading the resource, so the assetbundlemust be packaged first)

Load Packaged Resources

Using Unityengine;

Using System.Collections;

public class Loadnew:monobehaviour

{

public string filename = "My Resource";

private string Bundleurl;

private string Assetname;

void Start ()

{

Startcoroutine (Loadscenee ());

Startcoroutine (LoadResource ());

}

IEnumerator Loadscenee ()

{

string path;

Path = "file://" + Application.datapath + "/" + filename + ". Unity3d";

Debug.Log (path);

www www = new www (path);

yield return www;

Assetbundle bundle = Www.assetBundle;

Gameobject go = bundle. Load ("Gcube", typeof (Gameobject)) as Gameobject;

Gameobject Objscene = Instantiate (Www.assetBundle.mainAsset) as Gameobject;

Bundle. Unload (FALSE);

}

IEnumerator LoadResource ()

{

Bundleurl = "file://" + Application.datapath + "/" + filename + ". Unity3d";

Debug.Log ("Path:" + Bundleurl);

www m_download = new www (bundleurl);

Yield return m_download;

if (m_download.error! = null)

{

Debug.logerror (M_download.error);

Debug.logerror ("Warning errow:" + "Newscene");

Yield break;

}

Textasset txt = m_Download.assetBundle.Load (filename, typeof (Textasset)) as Textasset;

byte[] data = txt.bytes;

Byte[] Decrypteddata = decryption (data);

Debug.Log ("Decrypteddata Length:" + decrypteddata.length);

Startcoroutine (Loadbundle (decrypteddata));

}

IEnumerator Loadbundle (byte[] decrypteddata)

{

Assetbundlecreaterequest ACR = assetbundle.createfrommemory (Decrypteddata);

Yield return ACR;

Assetbundle bundle = Acr.assetbundle;

Gameobject obj = (gameobject) instantiate (Bundle.mainasset);

Obj. SetActive (TRUE);

}

Byte[] Decryption (byte[] data)

{

byte[] tmp = new byte[data. Length];

for (int i = 0; i < data. Length; i++)

{

Tmp[i] = Data[i];

}

Shanghaichaolan

string password = "LLH";

Packxor (tmp,tmp. Length,password);

return TMP;

}

static void Packxor (byte[] _data, int _len, string _pstr)

{

int length = _len;

int strcount = 0;

for (int i = 0; i < length; ++i)

{

if (Strcount >= _pstr. Length)

Strcount = 0;

_data[i] ^= (byte) _pstr[strcount++];

}

}

void Update ()

{

}

}

Unity3d Resource Packaging encryption