Difference between revisions of "CommonETicket"
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[[Category:File formats]] | [[Category:File formats]] | ||
| − | '''CommonETicket''' (for short, '''cetk''') is a format used to store an encrypted titlekey (using 128-Bit AES-CBC). | + | '''CommonETicket''' (for short, '''cetk''') is a format as a ticket used to store an encrypted titlekey (using 128-Bit AES-CBC). |
== Notice == | == Notice == | ||
| Line 108: | Line 108: | ||
| 0xA1C||52||Padding | | 0xA1C||52||Padding | ||
|} | |} | ||
| − | The Signature Type is the same const as that in TMD. | + | The Signature Type is the same const as that in [[TMD]]. |
== Some facts== | == Some facts== | ||
* '''CETK''' can be fetched through HTTP using the link to default update server, with only one word different from those of [[TMD]]s, while the 3ds use ''GetCommonETicket'' function (with SOAP). | * '''CETK''' can be fetched through HTTP using the link to default update server, with only one word different from those of [[TMD]]s, while the 3ds use ''GetCommonETicket'' function (with SOAP). | ||
* However only 3 cetk files has been discovered (those of Firmware Titles). Diff those files you will see there is only a few differences. The files seem to be '''just the same''' except those segments : 0x04-0x104,0x1BF-0x1CF,0x1D2-0x1D8,0x1DC-0x1E4,0x1E4-0x1E8. | * However only 3 cetk files has been discovered (those of Firmware Titles). Diff those files you will see there is only a few differences. The files seem to be '''just the same''' except those segments : 0x04-0x104,0x1BF-0x1CF,0x1D2-0x1D8,0x1DC-0x1E4,0x1E4-0x1E8. | ||
Revision as of 17:03, 26 March 2013
CommonETicket (for short, cetk) is a format as a ticket used to store an encrypted titlekey (using 128-Bit AES-CBC).
Notice
There is some part that not analysed, marked "Unknown Mark" or "(?)". There may also be mistakes. You can improve it freely if you can. When you finished the whole analysis of this, you can remove this Notice segment.
Structure
All the data in the file represented in Big Endian.
Content
| Offset | Size | Description |
| 0x000 | 4 | Signature Type |
| 0x004 | 256 | Signature |
| 0x104 | 60 | Padding modulo 64 |
| 0x140 | 64 | Issuer |
| 0x180 | 60 | Padding |
| 0x1BC | 1 | Index, Always 01 |
| 0X1BD | 2 | Unknown Mark, Padding (?) |
| 0x1BF | 16 | Encrypted TitleKey |
| 0x1CF | 1 | Unknown Mark, Padding (?) |
| 0x1D0 | 2 | Unknown Mark, 00 04 |
| 0x1D2 | 6 | Unknown Mark |
| 0x1D8 | 4 | Unknown Mark, Padding (?) |
| 0x1DC | 8 | TitleID |
| 0x1E4 | 4 | Version |
| 0x1E8 | 188 | Padding |
| 0x2A4 | 4 | Unknown Mark, 00 01 00 14 |
| 0x2A8 | 4 | Unknown Mark, 00 00 00 AC |
| 0x2AC | 4 | Unknown Mark, 00 00 00 14 |
| 0x2B0 | 4 | Unknown Mark, 00 01 00 14 |
| 0x2B4 | 4 | Unknown Mark, Padding (?) |
| 0x2B8 | 4 | Unknown Mark, 00 00 00 28 |
| 0x2BC | 4 | Unknown Mark, 00 00 00 01 |
| 0x2C0 | 4 | Unknown Mark, 00 00 00 84 |
| 0x2C4 | 4 | Unknown Mark, 00 00 00 84 |
| 0x2C8 | 4 | Unknown Mark, 00 03 00 00 |
| 0x2CC | 4 | Unknown Mark, 00 00 00 00 |
| 0x2D0 | 4 | Unknown Mark, 01 00 00 00 |
| 0x2D4 | 124 | Padding (?) |
| 0x350 | 4 | Signature Type |
| 0x354 | 256 | Signature |
| 0x454 | 60 | Padding |
| 0x490 | 64 | IssuerCA |
| 0x4D0 | 4 | Unknown Mark, 00 00 00 01 |
| 0x4D4 | 64 | IssuerXS |
| 0x514 | 260 | Product of Odds in Signature |
| 0x618 | 4 | Unknown Mark, 00 01 00 01 |
| 0x61C | 52 | Padding (?) |
| 0x650 | 4 | Signature Type |
| 0x654 | 512 | Signature |
| 0x854 | 60 | Padding |
| 0x890 | 64 | IssuerCALevel |
| 0x8D0 | 4 | Unknown Mark, 00 00 00 01 |
| 0x8D4 | 64 | IssuerCAName |
| 0x914 | 260 | Product of Odds in Signature |
| 0xA18 | 4 | Unknown Mark, 00 01 00 01 |
| 0xA1C | 52 | Padding |
The Signature Type is the same const as that in TMD.
Some facts
- CETK can be fetched through HTTP using the link to default update server, with only one word different from those of TMDs, while the 3ds use GetCommonETicket function (with SOAP).
- However only 3 cetk files has been discovered (those of Firmware Titles). Diff those files you will see there is only a few differences. The files seem to be just the same except those segments : 0x04-0x104,0x1BF-0x1CF,0x1D2-0x1D8,0x1DC-0x1E4,0x1E4-0x1E8.