https://www.3dbrew.org/w/index.php?action=history&feed=atom&title=FRDU%3AGetMyApproachContext 2026-05-13T02:54:46Z Revision history for this page on the wiki MediaWiki 1.43.1 https://www.3dbrew.org/w/index.php?title=FRDU:GetMyApproachContext&diff=22930&oldid=prev 2024-12-16T20:01:04Z

<p>Created page with &quot;=Request= {{IPC/Request}} {{IPC/RequestHeader|0x0033|0|0}} {{IPC/RequestEnd}} =Request Static Buffers= {{IPC/RequestStaticBuffers}} {{#vardefine:ipc_offset|0}} {{IPC/Translat...&quot;</p> <p><b>New page</b></p><div>=Request=<br /> {{IPC/Request}}<br /> {{IPC/RequestHeader|0x0033|0|0}}<br /> {{IPC/RequestEnd}}<br /> <br /> =Request Static Buffers=<br /> {{IPC/RequestStaticBuffers}}<br /> {{#vardefine:ipc_offset|0}}<br /> {{IPC/TranslateStaticBuffer|Output [[Friend_Services#Encrypted_ApproachContext_Payload|encrypted ApproachContext payload]] buffer|0}}<br /> {{IPC/RequestEnd}}<br /> <br /> =Response=<br /> {{IPC/Request}}<br /> {{#vardefine:ipc_offset|0}}<br /> {{IPC/RequestHeader|0x0033|1|2}}<br /> {{IPC/RequestEntry|Result code}}<br /> {{IPC/TranslateStaticBuffer|Output [[Friend_Services#Encrypted_ApproachContext_Payload|encrypted ApproachContext payload]] buffer|0}}<br /> {{IPC/RequestEnd}}<br /> <br /> =Description=<br /> Creates an encrypted payload containing information that can be used to add this console as a friend locally. (See [[Friend_Services#Approach_Contexts|Approach Contexts]] for details)<br /> <br /> First, the 0x1E0-sized [[Friend_Services#ApproachContext|ApproachContext]] structure is created and user&#039;s personal Mii is encrypted using [[APT:Wrap]]. If the user doesn&#039;t have a personal Mii yet, the 0x70-sized field in the approach context is set to all zeros.<br /> <br /> The populated structure is then encrypted with AES-CCM using [[PS:EncryptSignDecryptVerifyAesCcm]] and keytype 8 ([[AES_Registers#Keyslots|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.</div>

TimmSkiller