Editing EDAT files

{{Wikify}}

=Info on the talk page=
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===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 ([http://pastie.org/private/pmnmsnqg6zbfnk9xactbw flatz's rap2rifkey])
* Decrypt EDAT using corresponding klic (minis,psxclassics,etc) and rifkey

====='''Structure (Encrypted Format)'''=====
{| class="wikitable" style="text-align: center;"
|-
| style="background-color:#EDAEDA; color:#FFFFFF;" |
| style="background-color:#123EDA; color:#FFFFFF;" |'''Offset'''  
| style="background-color:#123EDA; color:#FFFFFF;" |'''Name'''
| style="background-color:#123EDA; color:#FFFFFF;" |'''Size'''
| style="background-color:#123EDA; color:#FFFFFF;" |'''Type'''
| style="background-color:#123EDA; color:#FFFFFF;" |'''Note'''
|-
| rowspan="19" style="background-color:#123EDA; color:#FFFFFF;" |'''Header'''
|-
| 0x00   || magic       || 4       || uint32 ||"NPD" (4E 50 44 00)
|-
| 0x04   || version     || 4       || uint32 ||
*01
*02
*03
*04
|-
| 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 with regard to the EDAT license type.
*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]
*02 Local License: requires first time activation on-line (paid content but also demo & free of charge content).
*03 Free License: without license check.
|-
| 0x0C   || [[App Types|Application Type]]   || 4 || uint32 || 
*00
*01 (only theme/avatar/activation key, come with only PS3LOGO.DAT. [[PKG_files#File_Header_2|PKG items count]] is 0x02) and PS2 EDAT ([http://www.ps3devwiki.com/ps3/Iso.bin.edat#About_PS2_Classics Iso.bin.edat])
*20 Disc Bind (regular, psp hd remasters)
*21 Disc Bind (modules)
*30 unknown (Ridge Racer 7 Update)
|-
| 0x10   || [[PARAM.SFO#CONTENT_ID|CONTENT ID]]    || 48 (0x30) || uint8 || Content ID
|-
| 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 [[Keys#NPDRM_OMAC_Keys|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 developer's klicensee and the second [[Keys#NPDRM_OMAC_Keys|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)
*00 Finalized EDAT
*01 Finalized SDAT
*80 Non Finalized EDAT
*81 Non Finalized SDAT
|-
| 0x81   || Metadata type      || 3 || uint8 || (Outdated Flags description from talk page)
*00
*01 Compressed?
*02 Plain text?
*03 Compressed plain text?
*05 Compressed?
*06 Plain text?
*07 Compressed plain text?
*0C ?
*0D Compressed data? 
*3C data/misc? 
|-
| 0x84   || Segment size      || 4 || uint8 || Default block is 16 KB (16384 bytes) = 0x4000, max is 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   || ECDSA Metadata signature     || 40 (0x28)   ||  || Can be zeroed on forged file. curve_type is vsh type 0x02, pub is vsh public key,
|-
| 0xD8   || ECDSA Header signature   || 40 (0x28)   ||  ||  Enabled (only?) for PS2 classic: all custom firmwares are patched to skip the ECDSA check. Can be zeroed on forged file. curve_type is vsh type 0x02, pub is vsh public key.
|-
| colspan=6 style="background-color:#010EDA; color:#FFFFFF;" |      
|-
| rowspan="21" style="background-color:#123EDA; color:#FFFFFF;" |'''Body''' 
|-
| 0x100   || Encrypted file      || Variable   ||  || The file is encrypted using  an AES algorithm in CBC mode. 
|-
| 0x**   || Padding     || Variable   ||  ||
|-
|}

====='''Footer Structure (Encrypted Format)'''=====
{| class="wikitable" style="text-align: center;"
|-
! style="background-color:#123EDA; color:#FFFFFF;" |Description || style="background-color:#123EDA; color:#FFFFFF;" |Size || style="background-color:#123EDA; color:#FFFFFF;" |Note 
|-
| Name    || 5 || "EDATA" or "SDATA"
|-
| Space   || 1 || 0x20
|-
| Tool Version || 8 ||
*Version 1: "packager"
*Version 2: "2.4.0.L "
*Version 2: "2.4.0.W "
*Version 2: "2.7.0.L "
*Version 3: "3.1.0.W "
*Version 3: "3.3.0.L "
*Version 3: "3.3.0.W "
*Version 4: "4.0.0.L "
*Version 4: "4.0.0.W "
|-
| End of the file || 2 || 00 00
|}
----
Note: Applied for normal ps3 edats and minis.edat




{{File Formats}}
<noinclude>[[Category:Main]]</noinclude>