Nintendo DS Cart Whitelist: Difference between revisions
Hallowizer (talk | contribs) formatting fixes and mentioned RSA signatures |
Hallowizer (talk | contribs) →NDHT entry: hash1 is definitely something with the main binary |
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The '''Nintendo DS Cart Whitelist''' is a system title (HNHA / 0003000f484e4841) on DSi and 3DS TWL_MODE that contains a list of whitelisted DS carts. Other carts can be loaded if they have a valid RSA signature, which is how newer DS games load on DSi systems. | The '''Nintendo DS Cart Whitelist''' is a system title (HNHA / 0003000f484e4841) on DSi and 3DS TWL_MODE that contains a list of whitelisted DS carts. Other carts can be loaded if they have a valid RSA signature, which is how newer DS games load on DSi systems. | ||
== | == Format == | ||
Newer versions of the file contain 3 sections: NDHT, NDHX, and NDHI. Older versions only contain NDHT. | |||
=== Header | === Header === | ||
Each section starts with a 136 byte header. | |||
{| class="wikitable" | {| class="wikitable" | ||
|- style="background-color: #ddd;" | |- style="background-color: #ddd;" | ||
| Line 14: | Line 14: | ||
| 0x00 | | 0x00 | ||
| 4 | | 4 | ||
| | | Section type (NDHT, NDHX, NDHI) | ||
|- | |- | ||
| 0x04 | | 0x04 | ||
| 0x80 | | 0x80 | ||
| | | RSA signature of the entire section below this point. | ||
|- | |- | ||
| 0x84 | | 0x84 | ||
| 4 | | 4 | ||
| Number of | | Number of entries | ||
|} | |} | ||
=== | === NDHT entry === | ||
NDHT entries correspond to titles and are 48 bytes. The NDHT section is always first. | |||
{| class="wikitable" | {| class="wikitable" | ||
|- style="background-color: #ddd;" | |- style="background-color: #ddd;" | ||
| Line 43: | Line 44: | ||
| 0x08 | | 0x08 | ||
| 20 | | 20 | ||
| | | hash1 (HMAC covering parts of the main binary) | ||
|- | |- | ||
| 0x1C | | 0x1C | ||
| 20 | | 20 | ||
| | | hash2 (overlay?) | ||
|} | |} | ||
=== | === NDHT footer === | ||
The footer is 24 bytes. | The NDHT footer is 24 bytes. | ||
{| class="wikitable" | {| class="wikitable" | ||
|- style="background-color: #ddd;" | |- style="background-color: #ddd;" | ||
| Line 61: | Line 62: | ||
| 24 | | 24 | ||
| Unknown | | Unknown | ||
|} | |||
=== NDHX entry === | |||
{| class="wikitable" | |||
|- style="background-color: #ddd;" | |||
! Start | |||
! Length | |||
! Description | |||
|- | |||
| 0x00 | |||
| 4 | |||
| ROM serial | |||
|- | |||
| 0x04 | |||
| 4 | |||
| ROM revision | |||
|- | |||
| 0x08 | |||
| 20 | |||
| hash3 | |||
|} | |||
=== NDHI entry === | |||
{| class="wikitable" | |||
|- style="background-color: #ddd;" | |||
! Start | |||
! Length | |||
! Description | |||
|- | |||
| 0x00 | |||
| 4 | |||
| ROM serial | |||
|- | |||
| 0x04 | |||
| 4 | |||
| ROM revision | |||
|- | |||
| 0x08 | |||
| 64 | |||
| 8 HMAC region struct | |||
{| class="wikitable" | |||
! Start | |||
! Length | |||
! Description | |||
|- | |||
| 0x0 | |||
| 4 | |||
| Unknown (offset?) | |||
|- | |||
| 0x4 | |||
| 4 | |||
| Unknown (length?) | |||
|} | |||
|- | |||
| 0x48 | |||
| 20 | |||
| Expected HMAC | |||
|} | |} | ||