CECDU:WriteMessageWithHMAC

Request

Index Word	Description
0	Header code [0x00070106]
1	NCCH Program ID
2	bool is_out_box?
3	message ID size (unused, always 8)
4	buffer size (unused)
5	Buffer Mapping Descriptor(R) = (buffer_size << 4) | 0xA
6	buffer address
7	Buffer Mapping Descriptor(R) = (HMAC_key_size << 4) | 0xA
8	HMAC key address
9	Buffer Mapping Descriptor(RW) = (message_ID_size << 4) | 0xE
10	message ID address

Response

Index Word	Description
0	Header code [0x00070046]
1	Result code
2	Buffer Unmapping Descriptor(R) = (buffer_size << 4) | 0xA
3	buffer address
4	Buffer Unmapping Descriptor(R) = (HMAC_key_size << 4) | 0xA
5	HMAC key address
6	Buffer Unmapping Descriptor(RW) = (message_ID_size << 4) | 0xE
7	message ID address