Amiibo Encryption Key Fixed Online

On writing: console re-encrypts with updated counters + salt, updates HMAC.

If you’re building a tool that reads/writes amiibo data: amiibo encryption key

For a while, the fortress held. The modding community, desperate to back up their expensive rare figures or create custom characters, hit a wall. They could read the data, but they couldn't write it back in a way the console would accept. They needed the key. On writing: console re-encrypts with updated counters +