A method to verify asset bundle integrity using a hash check before loading

I'm fully aware that in the realm of game security no solution is 100% hack proof. After doing some time googling I couldn't find a concrete answer to question so I decided to post here.

I'm looking into ways to make it more difficult for users to mod a game by directly modifying asset bundles and/or the assets there within.

I was wondering if is there is already a feature provided by Unity, or implementable in a custom manner, whereby hash values for each asset bundle (CRC/SHA256, what have you) could be stored on the server and sent to the client in the form of encrypted API request. Then before an asset bundle is allowed to be loaded, its integrity must first be verified.

 

https://docs.unity3d.com/ScriptReference/Networking.UnityWebRequestAssetBundle.GetAssetBundle.html

GetAssetBundle(string uri, uint version, uint crc);

if crc != 0 it will check the integrity of the bundle when loading

(crc is easily crackable though)
if you need more, you can write a custom provider that handles encription

 

Thank you!