Unity中对Apk签名验证

public class SignaVerify
{
	public static bool IsCorrect ()
	{   
		#if UNITY_EDITOR
		return true;
		#endif

		// 获取Android的PackageManager    
		AndroidJavaClass Player = new AndroidJavaClass ("com.unity3d.player.UnityPlayer");          
		AndroidJavaObject Activity = Player.GetStatic<AndroidJavaObject> ("currentActivity");        
		AndroidJavaObject PackageManager = Activity.Call<AndroidJavaObject> ("getPackageManager");  

		// 获取当前Android应用的包名
		string packageName = Activity.Call<string> ("getPackageName");

		// 调用PackageManager的getPackageInfo方法来获取签名信息数组    
		int GET_SIGNATURES = PackageManager.GetStatic<int> ("GET_SIGNATURES");         
		AndroidJavaObject PackageInfo = PackageManager.Call<AndroidJavaObject> ("getPackageInfo", packageName, GET_SIGNATURES);           
		AndroidJavaObject[] Signatures = PackageInfo.Get<AndroidJavaObject[]> ("signatures");           

		// 获取当前的签名的哈希值，判断其与我们签名的哈希值是否一致
		if (Signatures != null && Signatures.Length > 0)
		{
			int hashCode = Signatures [0].Call<int> ("hashCode");
			return hashCode == 8888888888;//我们签名的哈希值

		}
		return false;
	}    
}