Yuzu — Prod Keys

That is the only method that stands up to legal scrutiny. You are extracting keys from a device you own, for the purpose of playing backups of games you also own.

While Yuzu itself was open-source software, it did not include these keys. Users were required to provide them independently. The only legal method to obtain these keys is to dump them from a Nintendo Switch console owned by the user using custom firmware (CFW) and specialized dumping tools. yuzu prod keys

In February 2024, Nintendo of America filed a lawsuit against Tropic Haze LLC (the developers of Yuzu). That is the only method that stands up to legal scrutiny

Theoretically, emulation has legitimate uses, such as: However, the requirement for decryption keys blurred the

However, the requirement for decryption keys blurred the line between backup and piracy, making it difficult for emulator developers to claim strict legality when their software could not function without circumventing encryption.