Encrypt native plugins/protect IP

We want to release a unity package for asset store. The package contains a native library and the library contains our IP. It is important for us that users cannot easily grab our library and use it in another context.

First we want to prevent unity users from extracting our library from the unity package. Is there anyway we can encrypt the library in the unity package (.unitypackage)?

Secondly, if a game uses our unity package, how can we ensure that it is not possible to extract our native library from the game app? For instance by encrypting the library and only decrypt into memory at runtime.

We know that a skilled person would be able to extract the library no matter what we do but we want to make it as hard as possible to extract it.