Title metadata
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Title metadata is a format used to store information about a title (a single standalone game, channel, etc.) and all its installed contents, including which contents they consist of and their SHA1 hashes.
Code is available by trap15 to parse the available information from the 3DS format of TMDs.
Structure
Header
Start | Length | Description | |
RSA 2048 | RSA 4096 | ||
0x000 | 0x000 | 4 | Signature type |
0x004 | 0x004 | 256 / 512 | Signature |
0x104 | 0x204 | 60 | Padding modulo 64 |
0x140 | 0x240 | 64 | Issuer |
0x180 | 0x280 | 1 | Version |
0x181 | 0x281 | 1 | ca_crl_version |
0x182 | 0x282 | 1 | signer_crl_version |
0x183 | 0x283 | 1 | Padding modulo 64 |
0x184 | 0x284 | 8 | System Version |
0x18C | 0x28C | 8 | Title ID |
0x194 | 0x294 | 4 | Title type |
0x198 | 0x298 | 2 | Group ID |
0x19A | 0x29A | 62 | reserved |
0x1D8 | 0x2D8 | 4 | Access rights |
0x1DC | 0x2DC | 2 | Title version |
0x1DE | 0x2DE | 2 | Number of contents (contcount) |
0x1E0 | 0x2E0 | 2 | Boot content |
0x204 | 0x304 | 36*64 | Content info records |
0xB04 | 0xC04 | 48*contcount | Content chunk records |
Content info records
Start | Length | Description |
---|---|---|
0x00 | 2 | Content index offset |
0x02 | 2 | Content command count |
0x04 | 32 | SHA-256 hash? Commands? |
Content chunk records
Start | Length | Description |
---|---|---|
0x00 | 4 | Content id |
0x04 | 2 | Content index |
0x06 | 2 | Content type |
0x08 | 8 | Content size |
0x10 | 32 | SHA-256 hash |
Certificates
Start | Length | Description |
---|---|---|
0x000 | 4 | Signature type |
0x004 | * | Signature |
0x104 | 64 | Issuer |
0x124 | 4 | Tag |
0x128 | 64 | Name |
0x168 | Key |
Example code application
enum sig_type {
RSA_2048_SHA256 = 0x00010004,
RSA_4096_SHA256 = 0x00010003,
RSA_2048_SHA1 = 0x00010001,
RSA_4096_SHA1 = 0x00010000
};
// Sorry I removed the example struct because it is wrong.