These files, specific to the Yuzu emulator on the Android platform, are cryptographic keys extracted from a Nintendo Switch console. Their function is to decrypt game files, enabling the emulator to run commercial Nintendo Switch software. Without these, the software remains encrypted and unplayable on the Android version of the emulator.
The acquisition and use of these keys are a critical component for those seeking to experience Nintendo Switch games on their Android devices through emulation. However, the legality of obtaining these keys is a complex issue, as they are copyrighted intellectual property. Historically, their presence has been necessary for emulators to bypass Nintendo’s encryption, allowing for unauthorized access to and execution of game code. The widespread availability of these keys has significantly impacted the feasibility of mobile Switch emulation.