The DMCA takedown seems to be specifically about Ryujinx’s ability to decode ROMs. Circumventing DRM is in fact illegal according to the DMCA so they appear to have a valid argument. However, in their takedown notice they assume that the decryption keys are obtained illegally. I’m wondering if the DMCA forbids extracting the decryption keys (without distribution) from your own legitimately owned Nintendo hardware for personal backup. If so, then the Ryujinx feature might also be defensible.
This also raises the question of whether an emulator could be made to work on already decrypted media and let you figure out how to do that yourself. Nintendo could argue that its main use is still to play illegally decrypted ROMs but the emulator would have a decent defense imo.
Stovetop@lemmy.world 5 days ago
In theory it depends on if the emulator is using any proprietary Nintendo-owned code. In practice, it doesn’t matter at all because Nintendo can just out-spend any emulation group in legal battles until they give up.