View source for AMPXI:ValidateDSiWareSectionMAC

=Request=
{| class="wikitable" border="1"
|-
!  Index Word
!  Description
|-
| 0
| Header code [0x005500C4]
|-
| 1
| Buf0 size (must be 0x10)
|-
| 2
| Buf1 size (must be 0x20)
|-
| 3
| u8, [[DSiWare_Exports|DSiWare]] section index
|-
| 4
| (Buf0Size << 8) <nowiki>|</nowiki> 0x4
|-
| 5
| Buf0 pointer
|-
| 6
| (Buf1Size << 8) <nowiki>|</nowiki> 0x14
|-
| 7
| Buf1 pointer
|}

=Response=
{| class="wikitable" border="1"
|-
!  Index Word
!  Description
|-
| 0
| Header code [0x00550040]
|-
| 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:ImportDSiWare|AM]] module to verify the DSiWare section's [[DSiWare_Exports|metadata]] MAC after decrypting the payload data.