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FRDU:PrincipalIdToFriendCode (edit)
Revision as of 18:49, 14 December 2024
, 18:49, 14 December 2024no edit summary
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! Index Word+! Description+|-
−| 1
−| principalId
−|}
−This function takes the principalId given and applies SHA-1 over it (byte order: little endian). The first byte of the SHA-1 digest is then shifted right by 1, which forms the checksum byte.+It returns an u64. The lower word is the principalId, the upper word is the checksum byte.+=Response=+{| class="wikitable" border="1"+|-+
−! Index Word+! Description+|-
−| 0
−| Header code
−|-
−| 1
−| Result code
−| 2-3
−| (u64)the shareable friend code
−|}
=Request=
=Request=
−{| class="wikitable" border="1"
+{{IPC/Request}}
−|-
+{{IPC/RequestHeader|0x0024|1|0}}
−{{IPC/RequestEntry|Principal ID}}
−{{IPC/RequestEnd}}
−|-
−| 0
−| Header code [0x00240040]
−=Response=
+{{IPC/Request}}
+{{#vardefine:ipc_offset|0}}
+{{IPC/RequestHeader|0x0024|3|0}}
+{{IPC/RequestEntry|Result code}}
+{{IPC/RequestEntryRange|2|u64, Friend code}}
+{{IPC/RequestEnd}}
−=Description=
+Converts the given Principal ID to a Friend Code. The following algorithm is used (note: everything is in little endian):
−<code>
−principal_id_buf = principal_id as LE bytes
−friend_code = ((sha1(principal_id_buf)[0] >> 1) << 32) | principal_id
−</code>
−|-
−