EDAT files: Difference between revisions
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| 0x08 || [[License_Types|License Types]] || 4 || uint32 || for PS2 edat, the FW requires it to be with activation (also a.k.a. Paid content paired with your individual data) | | 0x08 || [[License_Types|License Types]] || 4 || uint32 || for PS2 edat, the FW requires it to be with activation (also a.k.a. Paid content paired with your individual data) | ||
for [[PKG_files#Misc.2FNote|PS1 PKG]], the FW 4.00 introduced some changes for installing them in regard of the EDAT license type. | |||
*00 Debug / SDAT | *00 Debug / SDAT | ||
*01 Network License: requires network authentication every time . [http://en.wikipedia.org/wiki/PlayStation_Network_outage#Inability_to_use_PlayStation_3_content See inability example] | *01 Network License: requires network authentication every time . [http://en.wikipedia.org/wiki/PlayStation_Network_outage#Inability_to_use_PlayStation_3_content See inability example] | ||
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| rowspan="21" style="background-color:#123EDA; color:#FFFFFF;" |'''Body''' | | rowspan="21" style="background-color:#123EDA; color:#FFFFFF;" |'''Body''' | ||
|- | |- | ||
| 0x100 || Encrypted file || Variable || || The file is encrypted using an AES | | 0x100 || Encrypted file || Variable || || The file is encrypted using an AES algorithm in CBC mode | ||
|- | |- | ||
| 0x** || Padding || Variable || || | | 0x** || Padding || Variable || || | ||
Revision as of 11:44, 6 September 2013
| This article is marked for rewrite/restructuring in proper wiki format. You can help PS3 Developer wiki by editing it. |
Info on the talk page
Info on the talk page: please digest the info and move it here
The info on this page is an extract of conversations, forum posts and from the talk page.
Decryption of EDATS
Three ways to do it:
- act.dat,rif,idps combo
- rap
- free content (npdrm1 klic)
Free Content
Simply decrypted with appldr keys and free klic
Using RAP
Overview of steps:
- Obtain rifkey from rap (flatz's rap2rifkey)
- Decrypt EDAT using corresponding klic (minis,psxclassics,etc) and rifkey
Structure (Encrypted Format)
| Offset | Name | Size | Type | Note | |
| Header | |||||
| 0x00 | magic | 4 | uint32 | "NPD" (4E 50 44 00) | |
| 0x04 | version | 4 | uint32 |
| |
| 0x08 | License Types | 4 | uint32 | for PS2 edat, the FW requires it to be with activation (also a.k.a. Paid content paired with your individual data)
for PS1 PKG, the FW 4.00 introduced some changes for installing them in regard of the EDAT license type.
| |
| 0x0B | Application Type | 4 | uint32 |
| |
| 0x10 | CONTENT ID | 48 (0x30) | uint8 | Content Identificator | |
| 0x40 | Digest | 16 (0x10) | uint8 | QA digest (seems like to be a SHA-1 hash of the non-finalized file) : hash of the original data which is unknown until the whole file is read, can not be used as check. Can be used as watermark or zeroed on forged file. | |
| 0x50 | NPD hash 1 | 16 (0x10) | uint8 | CID-FN hash (an AES CMAC hash of concatenation of Content ID and File Name using the third NPDRM OMAC key as CMAC key) | |
| 0x60 | NPD hash 2 | 16 (0x10) | uint8 | header hash (an AES CMAC hash of the 0x60 bytes from the beginning of file using xored bytes of the first NPDRM OMAC key and the second NPDRM OMAC key as CMAC key) | |
| 0x70 | Activation time | 8 | unkn | Start of the validity period, filled with 00 if not used. | |
| 0x78 | Activation time | 8 | unkn | End of the validity period, filled with 00 if not used. | |
| 0x80 | NPD type | 1 | uint8 | (Separated from Metadata type for wiki format)
| |
| 0x83 | Metadata type | 3 | uint8 | (Flags description from talk page)
| |
| 0x84 | Segment size | 4 | uint8 | default block is 16384 bytes = 0x4000. Seen also 0x8000. | |
| 0x88 | Data size | 8 | uint8 | decoded data size | |
| 0x90 | meta data sections hash | 16 (0x10) | |||
| 0xA0 | extended header hash | 16 (0x10) | An AES CMAC hash of 160 bytes from the beginning of file) uses the hash key as CMAC key and it depends on the file flags and keys | ||
| 0xB0 | Unknown data? | 40 (0x28) | Possible another unknown signature: zeroed on forged file | ||
| 0xD8 | ECDSA signature | 40 (0x28) | Enabled (only?) for PS2 classic: all custom firmwares are patched to skip the ECDSA check. Zeroed on forged file. | ||
| Body | |||||
| 0x100 | Encrypted file | Variable | The file is encrypted using an AES algorithm in CBC mode | ||
| 0x** | Padding | Variable | |||
| Description | Size | Note |
|---|---|---|
| Name | 5 | "EDATA" or "SDATA" |
| Space | 1 | 0x20 |
| Revision Version? | 8 |
|
| End of the file | 2 | 00 00 |
Note: Applied for normal ps3 edats and minis.edat