Editing EDAT files

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EDATA is a file format used on PSP and PS3 to store encrypted data. There is also on PS3 only the SDATA file format which is very similar to EDATA (to detail). This page is for now about PS3 EDATA/SDATA only.
{{Wikify}}


= Info on the talk page =
= Info on the talk page =
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'''Info on the talk page''': please digest the info and move it here'''
'''Info on the talk page''': please digest the info and move it here'''


= Location =
'''The info on this page is an extract of conversations, forum posts and from the talk page.


EDAT files are stored under .edat extension. They are often packed in NPDRM [[PKG files]], downloaded from PS Store then extracted to the PS3 HDD. There are also PSP EDAT files which have a different format (to document).
=== EDAT Decryption ===


= Structure (Encrypted Format) =
EDAT decryption requires a key, the klicensee. Depending on the license type, klicensee is got in different ways:
* License type Local: act.dat + rif + idps combo
* License type Free: constant npdrm1 klicensee (see NPDRM Keys and appldr keys)


== Header ==
===== Structure (Encrypted Format) =====


{| class="wikitable" style="text-align: center;"
{| class="wikitable" style="text-align: center;"
|-
|-
! style="background-color:#ffffff; border-left:1px solid #ffffff; border-top:1px solid #ffffff;" |
! style="background-color:#ffffff; border-left:1px solid #ffffff; border-top:1px solid #ffffff;" |
! Offset !! Name !! Size !! Type !! Notes
! Offset
! Name
! Size
! Type
! Notes
|-
|-
! rowspan="10" | Header
! rowspan="19" | Header
|-
|-
| 0x0 || NPD || 0x80 || PS3_NPD || See [[NPD]].
| 0x00 || magic || 4 || char[4] ||"NPD\0" (4E 50 44 00)
|-
|-
| 0x80 || Type || 1 || ?uint8_t? || (separated from Metadata type for wiki format)
| 0x04 || version || 4 || uint32_t ||
*00: EDAT
*01
*01: SDAT
*02
*80: Non Finalized (unsigned)
*03
*04
|-
| 0x08 || [[License_Types|License Types]] || 4 || uint32_t || 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.
|-
| 0x0C || [[App Types|Application Type]] || 4 || uint32_t ||
|-
| 0x10 || [[PARAM.SFO#CONTENT_ID|CONTENT ID]] || 0x30 || uint8_t[0x30] || Content ID (with padding to fit 48 bytes)
|-
| 0x40 || Digest || 0x10 || uint8[0x10] || 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, so it cannot be used as a check, however it can be used as watermark or zeroed on forged file.
|-
| 0x50 || NPD hash 1 || 0x10 || uint8_t[0x10] || CID-FN hash. It is an AES-CMAC hash of concatenation of Content ID (48 bytes) and EDAT file name (eg MINIS.EDAT) using the third [[Keys#NPDRM_OMAC_Keys|NPDRM OMAC key]] as AES-CMAC key). Example: aes_cmac(55 50 30 35 37 36 2D 4E 50 55 5A 30 30 31 34 39 5F 30 30 2D 56 41 4E 47 55 41 52 44 32 30 30 30 30 30 30 31 00 00 00 00 00 00 00 00 00 00 00 00 4D 49 4E 49 53 2E 45 44 41 54, npd_cid_fn_hash_omac_key).
|-
| 0x60 || NPD hash 2 || 0x10 || uint8_t[0x10] || header hash (an AES CMAC hash of the 0x60 bytes from the beginning of the file using xored bytes of the developer's klicensee and the second [[Keys#NPDRM_OMAC_Keys|NPDRM OMAC key]] as AES-CMAC key)
|-
| 0x70 || Activation time || 8 || ?64-bit time? || Start of the validity period, filled with 00 if not used.
|-
| 0x78 || Activation time || 8 || ?64-bit time? || End of the validity period, filled with 00 if not used.
|-
| 0x80 || NPD type || 1 || ?uint8_t? || (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_t[3]? || (Outdated Flags description from talk page)
| 0x81 || Metadata type || 3 || ?uint8_t[3]? || (Outdated Flags description from talk page)
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*3C: Data/misc?
*3C: Data/misc?
|-
|-
| 0x84 || Block size || 4 || uint32_t || Default block size is 16 KB (0x4000 bytes). Max block size is 32 KB (0x8000 bytes). Working block sizes are: 1, 2, 4, 8, 16, 32 KB.
| 0x84 || Segment size || 4 || uint32_t || Default block is 16 KB (16384 bytes) = 0x4000, max is 0x8000.
|-
|-
| 0x88 || Data size || 8 || uint64_t || Decoded data size.
| 0x88 || Data size || 8 || uint64_t || Decoded data size.
|-
|-
| 0x90 || Metadata sections hash || 0x10 || uint8_t[0x10] ||  
| 0x90 || Meta data sections hash || 0x10 || uint8_t[0x10] ||  
|-
|-
| 0xA0 || Extended header hash || 0x10 || uint8_t[0x10] || AES-CMAC hash of 160 bytes from the beginning of EDAT file. It uses the hash key as AES-CMAC key and it depends on the file flags and keys. ?What does this mean, see make_npdata by Hykem?
| 0xA0 || Extended header hash || 0x10 || uint8_t[0x10] || An AES-CMAC hash of 160 bytes from the beginning of file. It uses the hash key as AES-CMAC key and it depends on the file flags and keys.
|-
|-
| 0xB0 || ECDSA Metadata signature || 0x28 || uint8_t[0x28] || ECDSA curve type is vsh type 2. ECDSA public key is vsh public key (to check). It can be zeroed on forged file.
| 0xB0 || ECDSA Metadata signature || 0x28 || uint8_t[0x28] || Can be zeroed on forged file. curve_type is vsh type 0x02, pub is vsh public key,
|-
|-
| 0xD8 || ECDSA Header signature || 0x28) || uint8_t[0x28] || ECDSA curve type is vsh type 2. ECDSA public key is vsh public key (to check). Enabled (only?) for PS2 classic contents: all PS3 CFWs are patched to skip the ECDSA signature check. It can be zeroed on forged file.
| 0xD8 || ECDSA Header signature || 0x28) || uint8_t[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 2, pub is vsh public key.
|-
|-
! colspan=6 |       
! colspan=6 |       
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! rowspan="3" | Body
! rowspan="3" | Body
|-
|-
| 0x100 || Encrypted file || Variable || uint8_t[variable] || The file is encrypted using AES128CBC.
| 0x100 || Encrypted file || Variable || uint8_t[variable] || The file is encrypted using an AES algorithm in CBC mode.
|-
|-
| 0x** || Padding || Variable || uint8_t[variable] || Aligned on ?? bytes.
| 0x** || Padding || Variable || uint8_t[variable] || Aligned on ?? bytes.
|}
|}


== Footer ==
===== Footer Structure (Encrypted Format) =====


{| class="wikitable" style="text-align: center;"
{| class="wikitable" style="text-align: center;"
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| Space character || 1 || ' ' = 0x20
| Space character || 1 || ' ' = 0x20
|-
|-
| Packager Version || 8 ||
| Tool Version || 8 ||
*Version 1: "packager"
*Version 1: "packager"
*Version 2: "2.4.0.L "
*Version 2: "2.4.0.L "
*Version 2: "2.4.0.W "
*Version 2: "2.4.0.W "
*Version 2: "2.7.0.W "
*Version 2: "2.7.0.L "
*Version 2: "2.7.0.L "
*Version 3: "3.1.0.W "
*Version 3: "3.1.0.W "
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|}
|}


The footer is plaintext. It seems that the footer is not present in some EDAT files version 1 (e.g. in some Ridge Racer 7 additional contents) although it should theoretically be present with version = "packager".
= EDAT Versions =
There are 4 PS3 EDAT (and NPD) format major versions:
* 1: compatible with SDK 2.1x or older. Supported since at least PS3 System Software version 1.01.
* 2: compatible with SDK 3.0x or older
* 3: compatible with SDK 3.7x or older
* 4: compatible with SDK ?.?? or older. Supported since certainly some 4.0x System Software version.
= EDAT Extraction =
EDAT decryption, and complete verification, requires Klicensee. See [[NPDRM]].
= EDAT Generation =
To document.
= Tools =
== Official tools ==
=== make_edata_npdrm version 1.0.0 ===
Found in SCE PS3 SDK 1.92.
=== make_edata_npdrm version 2.7.0.W ===
make_edata_npdrm version 2.7.0.W (2009-08-18)
Found in SCE PS3 SDK 3.00.
=== make_edata_npdrm version 3.3.0.W ===
make_edata_npdrm version 3.3.0.W (2011-03-04)
Found in SCE PS3 SDK 3.60.
=== make_edata_npdrm version 4.0.0.W ===
make_edata_npdrm version 4.0.0.W (?date?)
Found in SCE PS3 SDK 4.75.
<pre>
make_edata_npdrm -h
make_edata_npdrm: version 4.0.0.W
usage:
  make_edata_npdrm [-options] <input file> <output file>
options:
  -h, --help    : print this usage and exit
  -v, --version  : print program version and exit
  -p, --progress : print progress [%]
  [create option]
  -b <size(KB)>  : block size (default 16, max 32)
  -z, --compress : data compress
  --format1      : old format (compatible with SDK 2.1x or older)
  --format2      : old format (compatible with SDK 3.0x or older)
  --format3      : old format (compatible with SDK 3.7x or older)
  [extract/check option]
  -x, --extract  : extract raw image from developing EDATA
  -i, --info    : print file information
</pre>
== Unofficial tools ==
=== make_npdata by Hykem ===
* [https://github.com/ErikPshat/make_npdata-hykem make_npdata by Hykem]
=== True Ancestor EDAT Rebuilder by JjKkYu ===
To document.


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