# Phase 5

For phase 5, implement the `open` command. This will provide an implementation for the `perform_open` method, and will
also need another couple error variants, unless they already exist:

- The given key might not open the given drawer file
- The drawer file might not decrypt to a valid tarball

The code for the open command is pretty much the same as the close command, in reverse order:

- Read the drawer file into an array
- Decrypt it with the key (failing if it won't decrypt, or if it's not a valid tarball)
- Expand it with the `tar` crate into the target path