Changes

== Mii QR Code format ==

== Mii QR Code format ==

3DS Mii QR is a standard 57x57 pixel Level 10 High ECC QR code with 'Mii' logo in center (refer to [http://www.denso-wave.com/qrcode Denso-Wave Inc] web site for QR Code format specifications). It contains 0x70-bytes of binary data. 3DS seems to have a fully implemented QR-code decoder, as it can interpret such Mii binary data being encoded even in the smallest possible for that data size Level 6 Low ECC QR code. The data itself is encrypted with AES-CCM, xorpads can be determined from known plaintext here. The Mii Maker application uses the [[NS]] APT Wrap/Unwrap commands to encrypt/decrypt this Mii data. For the NS [[APT:Unwrap|Unwrap]] command, the Mii Maker application uses blocksize=12, noncesize=10, and inputbuffer-size=0x60.

3DS Mii QR is a standard 57x57 pixel Level 10 High ECC QR code with 'Mii' logo in center (refer to [http://www.denso-wave.com/qrcode Denso-Wave Inc] web site for QR Code format specifications). It contains 0x70-bytes of binary data. 3DS seems to have a fully implemented QR-code decoder, as it can interpret such Mii binary data being encoded even in the smallest possible for that data size Level 6 Low ECC QR code.

 

The data itself is encrypted with AES-CCM, xorpads can be determined from known plaintext here. The Mii Maker application uses the [[NS]] APT Wrap/Unwrap commands to encrypt/decrypt this Mii data. For the NS [[APT:Unwrap|Unwrap]] command, the Mii Maker application uses blocksize=12, noncesize=10, and inputbuffer-size=0x60. The first 8-bytes(cleartext MiiID+MAC address) in the below Mii data is the nonce used with the NS Unwrap/Wrap commands, the rest of the data at 0x8-0x5F is encrypted.

{| class="wikitable"

{| class="wikitable"

| 0x8

| 0x8

| 0x1

| 0x1

| unknown

| Unknown, the encrypted data begins here.

|-

|-

| 0x9

| 0x9

| 0x5E

| 0x5E

| 0x2

| 0x2

| unknown (seems like the start of the checksum)

| unknown

|-

|-

| 0x60

| 0x60