3ds Keys !!top!! Official

3DS keys are not a “crack” or a “hack” in the malicious sense—they are a technical requirement for emulation due to hardware encryption. If you own a 3DS and wish to back up your games for personal use on a PC, you can legally dump your own keys. However, sharing those keys or downloading them from others crosses into legally murky (and often explicitly illegal) territory.

Here's a simplified overview of how 3DS keys work: 3ds keys