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
All the data in the file represented in Big Endian.
Header
| Offset | Size | 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 |
| 0x1E2 | 0x2E2 | 2 | Padding |
| 0x1E4 | 0x2E4 | 32 | SHA-256 hash of the 36*64 byte long content info record blob (next field) |
| 0x204 | 0x304 | 36*64 | Content info records |
| 0xB04 | 0xC04 | 48*contcount | Content chunk records |
Content info records
| Offset | Size | Description |
|---|---|---|
| 0x00 | 2 | Content index offset |
| 0x02 | 2 | Content command count [k] |
| 0x04 | 32 | SHA-256 hash of the next k content records that have not been hashed yet |
Content chunk records
| Offset | Size | Description |
|---|---|---|
| 0x00 | 4 | Content id |
| 0x04 | 2 | Content index |
| 0x06 | 2 | Content type |
| 0x08 | 8 | Content size |
| 0x10 | 32 | SHA-256 hash |
Content Index flags
This indicates the type of content the "Content" is:
| Flag | Content Type |
|---|---|
| 0000 | Main Executable (.CXI for 3DS content/.SRL for DSiWare) |
| 0001 | Home Menu Manual (.CFA) |
| 0002 | DLP Child Container (.CFA) |
Content Type flags
| Flags | Description |
|---|---|
| 1 | Encrypted |
| 2 | Disc |
| 4 | CFM (abbreviation for?) |
| 0x4000 | Optional |
| 0x8000 | Shared |
Certificates
| Offset | Size | 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.