Creates an encrypted payload containing information that can be used to add this console as a friend locally. (See Approach Contexts for details)

First, the 0x1E0-sized ApproachContext structure is created and user’s personal Mii is encrypted using APT:Wrap. If the user doesn’t have a personal Mii yet, the 0x70-sized field in the approach context is set to all zeros.

The populated structure is then encrypted with AES-CCM using PS:EncryptSignDecryptVerifyAesCcm and keytype 8 ( Keyslot 0x36), the nonce being the concatenated little-endian Principal ID and Friend Code of the console (total nonce size 12). The nonce is returned in plaintext at offset 0x4-0x10. Note that the ApproachContext is located at 0x10 and that is where the actually encrypted section begins. In other words, the AES-CCM encrypted section is located at offset 0x10 thru 0x1F0.