View source for CTXT

This page describes the structure of the .ctx files located at [[Title_Data_Structure|nand:/title/<titlepath>/00000000.ctx]].

=Structure=
{| class="wikitable" border="1"
!  Offset
!  Size
!  Description
|-
| 0x0
| 0x10
| AESMAC over SHA256 of bytes 0x10..0x30
|-
| 0x10
| 0x4
| Magic "CTXT"
|-
| 0x14
| 0x4
| Value 0 usually?
|-
| 0x18
| 0x4
| Value 1 usually?
|-
| 0x1C
| 0x4
| Value 0 usually?
|-
| 0x20
| 0x8
| TitleID
|-
| 0x28
| 0x4
| Unknown u32
|-
| 0x2C
| 0x1D4
| All-zero
|-
| 0x200
| 0x10
| AES-MAC?
|-
| 0x210
| 0x8
| TitleID
|-
| 0x218
| 0x4
| contentID for contentindex0
|-
| 0x21C
| 0x4
| Unknown u32 for contentindex0
|-
| 0x220
| 0x8
| content-size for contentindex0
|-
| 0x228
| 0x8
| Usually zero?
|-
| 0x230
| 0x3CC
| Usually 0xFF?
|-
| 0x5FC
| 0x4
| This has the same value as the u32 at 0x28.
|}