6) (10 Points) Tyrion is trying to download the latest version of the BraveShip web browser from its official website, mainotopia.edu. However, the download from mainotopia.edu is taking too long, so Jon logs onto SoTorrent, a file sharing service where anyone can upload files for others to download. He searches for BraveShip on SoTorrent and downloads the first file that is returned in the search results. Which of the following could mainotopia.edu publish on their website to help users like Jon efficiently verify that the file they downloaded from a file-sharing service really is the BraveShip browser, and not some malicious program? Efficiency means that if the browser is n bytes, the user does not have to download more than n+O(1) bytes. Assume that the mainotopia.edu website is secure. Mark ALL that apply. Explain your answers. (a) Publish a screenshot of BraveShip's user interface. (b) Publish a digital signature of the BraveShip binary. (C) Publish a version of the BraveShip binary encrypted using mainotopia.edu's public key. (d) Publish a secure hash (e.g., SHA-256) of the BraveShip binary. (e) Publish a MAC, along with an associated key, of the BraveShip binary. (f) Publish a version of the BraveShip binary encrypted using AES, along with an associated key