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 contain 112 byte of binary data. 3DS seems to have 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, presumably AES-CTR since some xorpads can be determined from known plaintext here. The CTR might be based on data stored here?

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. It's unknown what is used for the nonce. The Mii Maker application uses the [[NS]] APT Wrap/Unwrap commands to encrypt/decrypt this Mii data.

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* Codes made from the same 3DS for the same Mii are encrypted with the same xorpad (you can recreate it by xoring with known values from this table).

* QR codes made from the same 3DS for the same Mii are encrypted with the same xorpad (you can recreate it by xoring with known values from this table).