pointerguard

Pointer encryption library in rust.

/// Example player struct.
struct Player {
  health: u32,
}

// turn box into encrypted pointer.
let player: EncryptedPtr<_> = Box::new(Player { health: 100 }).into();

assert_eq!(player.health, 100);

You can replace Box<T> with EncryptedPtr<T>, for example, to encrypt the reference to T.

Features

• Random encryption method determined on EncryptedPtr instantiation, making it harder to reverse engineer.
• Automatically drops and deallocates pointed object when EncryptedPtr goes out of scope.

Motivation

As you can see in this image, we can pointer scan (manually or automatically) to find the 'link' to the player's health: World -> people -> Person. To fix this just change Box<Person> to EncryptedPtr<Person>.

Now, just like that, the chain is "broken".