Request
| Index Word
|
Description
|
| 0
|
Header code [0x005500C4]
|
| 1
|
Buf0 size, must be 0x10-bytes.
|
| 2
|
Buf1 size, must be 0x20-bytes.
|
| 3
|
u8 DSiWare section index
|
| 4
|
(Buf0Size<<8) | 0x4
|
| 5
|
Buf0 ptr
|
| 6
|
(Buf1Size<<8) | 0x14
|
| 7
|
Buf1 ptr
|
Response
| Index Word
|
Description
|
| 0
|
Header code
|
| 1
|
Result code
|
Description
This calculates an AES MAC over the 0x20-byte buf1 SHA-256 hash. When this MAC matches the MAC stored in buf0, result-code 0 is returned, otherwise an error is returned. This is used by AM module to verify the DSiWare section's metadata MAC after decrypting the payload data.