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Most of the NFC pages are [[Process_Services_PXI|encrypted]]. This includes the actual Mii data for the owner, an UTF-16 string for the Amiibo nickname, etc.
Most of the NFC pages are [[Process_Services_PXI|encrypted]]. This includes the actual Mii data for the owner, an UTF-16 string for the Amiibo nickname, etc.
The NFC tag for Amiibo is NTAG215.
Each page is 4-bytes, the following is the structure of the NFC page:
{| class="wikitable" border="1"
|-
! NFC page
! Total pages
! Raw byte offset in EEPROM
! Total byte size
! Description
|-
| 0
| 4
| 0x10
| 0x10
| Same as standard NTAG215: 9-byte serial-number, "internal" u8 value, two lock bytes then the "Capability Container (CC)" page.
|-
| 4
| 8
| 0x10
| 0x20
| SHA256-HMAC over 0x1DF-bytes: first 3-bytes are from the last 3-bytes of page[12], the rest is over the first 0x1DC-bytes of the plaintext data following this hash(see page[13]).
|-
| 12
| 1
| 0x30
| 0x4
| Unknown. Last 3-bytes here are used with the above HMAC.
|-
| 13
|
| 0x34
|
| The system crypts 0x1A0-bytes starting here.
|}