To answer my own question, it's because the games are (symmetrical) encrypted. Skimming switchbrew it looks like there is public key crypto as well. https://sw

To answer my own question, it's because the games are (symmetrical) encrypted. Skimming switchbrew it looks like there is public key crypto as well. https://switchbrew.org/wiki/NRR https://switchbrew.org/wiki/NRR So this key leak doesn't mean homebrew can be signed for unmodified consoles.