Support for random UIDs - amiibo.

[kalimaz0]

Per this issue here - DanTheMan827#33

Could a random UID be generated for each use of the amiibo?

[DanTheMan827]

@Swordstone86 yes, but you’d need to include amiitool code in the firmware.

not sure how much space is going to be left once you include the crypto libraries and whatnot.

[Swordstone86]

@DanTheMan827 Thankfully, someone else seems to have already ported that code to Javascript, so all I'll have to do is trim it down :)

From the preliminary investigation I've done, it's honestly not that much code, and including it not only will allow us to emulate random UIDs, but also allow us to emulate specific amiibo on the fly without needing to store a tag at all, unless we were using the amiibo with a read/write game (like Smash Bros.)

[DanTheMan827]

A pure JavaScript implementation might work, but I think the size will be considerable, and performance questionable.

looking at the firmware, they already seem to have mbedtls, so it would just be adding the amiitool library as a module.

Not that difficult… probably…