Android

Activity activity = com.unity3d.player.UnityPlayer.currentActivity;

PackageManager pm = activity.getPackageManager();

String packagename = activity.getPackageName();

PackageInfo packageinfo = pm.getPackageInfo(packagename, PackageManager.GET_SIGNATURES);

Signature[] signature = packageinfo.signatures;

int signaturehash = Integer.toHexString(signature.hashCode());

return signaturehash;

Unity

var unity = new AndroidJavaClass(“com.unity3d.player.UnityPlayer”);

var activity = unity.GetStatic.<AndroidJavaObject>(“currentActivity”);

var manager = activity.Call.<AndroidJavaObject>(“getPackageManager”);

var name = activity.Call.<String>(“getPackageName”);

var GET_SIGNATURES = 64;

var packageInfo = manager.Call.<AndroidJavaObject>(“getPackageInfo”, name, GET_SIGNATURES);

var signatures = packageInfo.Get.<AndroidJavaObject>(“signatures”);

var signatureshash = signatures[0].Call.<int>(“hashCode”).ToString(“X”);

return signatureshash;