Title metadata

2010-01-28T00:58:14Z

TwelveBaud: Added what title the example TMD is for.

'''Title metadata''', or '''TMD''' for short, is a format used to store information about a title (DSiWare, etc.) and all its installed contents, including which contents they consist of and their SHA1 hashes. The format between Wii and DSi Title metadata ''appears'' to be identical.

Many operations are done in terms of 64-byte blocks, which means you will often see padding out to the nearest 64-byte boundary at the end of a field.

Example of a Nintendo DSi TMD : http://nus.cdn.t.shop.nintendowifi.net/ccs/download/0003000f484e4c4a/tmd ("HNLJ", or Japanese [[Version Data]].)

== Structure ==

=== Header ===

{| class="wikitable"
|- style="background-color: #ddd;"
! Start
! Length
! Description
|-
| 0x000
| 4
| Signature type
|-
| 0x004
| 256
| Signature
|-
| 0x104
| 60
| Padding modulo 64
|-
| 0x140
| 64
| Issuer
|-
| 0x180
| 1
| Version
|-
| 0x181
| 1
| ca_crl_version
|-
| 0x182
| 1
| signer_crl_version
|-
| 0x183
| 1
| Padding modulo 64
|-
| 0x184
| 8
| System Version
|-
| 0x18C
| 8
| Title ID
|-
| 0x194
| 4
| Title type
|-
| 0x198
| 2
| Group ID
|-
| 0x19A
| 62
| reserved
|-
| 0x1D8
| 4
| Access rights
|-
| 0x1DC
| 2
| Title version
|-
| 0x1DE
| 2
| Number of contents (nbr_cont)
|-
| 0x1E0
| 2
| boot index
|-
| 0x1E2
| 2
| Padding modulo 64
|-
| 0x1E4
| 36*nbr_cont
| Contents
|}

=== Content ===
{| class="wikitable"
|-
! Start
! Length
! Description
|-
| 0x00
| 4
| Content ID
|-
| 0x04
| 2
| Index
|-
| 0x06
| 2
| Type
|-
| 0x08
| 8
| Size
|-
| 0x10
| 20
| SHA1 hash
|}

=== Certificates ===
{| class="wikitable"
|-
! Start
! Length
! Description
|-
| 0x000
| 4
| Signature type
|-
| 0x004
| 256
| Signature
|-
| 0x104
| 32
| Issuer
|-
| 0x124
| 4
| Tag
|-
| 0x128
| 64
| Name
|-
| 0x168
|
| Key
|}

DSiBrew - User contributions [en]

Title metadata