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| Line 44: |
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| | =Description= | | =Description= |
| − | These input buffers are the same buffers used with [[AMPXI:ValidateDSiWareMovableSedHash]]. This calculates an AES MAC over the 0x20-byte buf1 SHA-256 hash using the same keyslot used for DSiWare exports' MACs. When this MAC matches the MAC stored in buf0, result-code 0 is returned, otherwise an error is returned.
| + | 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 for verify the DSiWare section's metadata MAC after decrypting the payload data. |
Revision as of 03:34, 25 April 2013
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 for verify the DSiWare section's metadata MAC after decrypting the payload data.