VPK

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The scenes equivalent to sonys PKGS format but in case it's to use with a HENkaku enabled Vitas or PSTVs, it does not use any encryption over the files. So you can not install a VPK with the official PKG Installer and vice verca, VitaShell can not install PKGS files.

Make your own VPK files[edit]

Do that the same way just like it will be done for own made PKGS files. But instead of the original encrypted files, use the one from your project or what ever for non-encrypted app files.

File format[edit]

File Layout[edit]

  • The PKZip (Zip) file. (.vpk) format consists of:
File Layout
Local file header 1
File data 1
Data descriptor 1
Local file header 2
File data 2
Data descriptor 2
...
Local file header n
File data n
Data descriptor n
Archive descriptor header
Archive extra data record
Central directory

Local File[edit]

  • For a single local file:
byte index Description
[0x00-0x03] Signature of the local file header. This is always '\x50\x4b\x03\x04'.
[0x04-0x05] Version
[0x06-0x07] Flags
Bit index
00 01-02 03 04 05 06 07-10 11 12 13 14-15
encrypted file compression option data descriptor enhanced deflation compressed patched data strong encryption unused language encoding reserved mask header values reserved
[0x08-0x09] Compression
  • 00: no compression
  • 01: shrunk
  • 02: reduced with compression factor 1
  • 03: reduced with compression factor 2
  • 04: reduced with compression factor 3
  • 05: reduced with compression factor 4
  • 06: imploded
  • 07: reserved
  • 08: deflated
  • 09: enhanced deflated
  • 10: PKWare DCL imploded
  • 11: reserved
  • 12: compressed using BZIP2
  • 13: reserved
  • 14: LZMA
  • 15-17: reserved
  • 18: compressed using IBM TERSE
  • 19: IBM LZ77 z
  • 98: PPMd version I, Rev 1
[0x0A-0x0B] File modification time

stored in standard MS-DOS format:

  • Bits 00-04: seconds divided by 2
  • Bits 05-10: minute
  • Bits 11-15: hour
[0x0C-0x0D] File modification date:

stored in standard MS-DOS format:

  • Bits 00-04: day
  • Bits 05-08: month
  • Bits 09-15: years from 1980
[0x0E-0x11] Crc-32: