Here are some key points about the amiibo retail encryption key:
Users typically find a hex string on Pastebin, save it as a binary file, and import it into an app. This "unlocks" the ability to write amiibo data to blank
: Load an amiibo .bin file and press "Write Tag" using an NTAG215.
To process Amiibo data, you generally need two specific cryptographic master keys: unfixed-info.bin : Contains data related to the Amiibo's identification. locked-secret.bin
Understanding Amiibo Retail Encryption Keys: Usage and Access