PGD

PGD is a data format used on PSP since late firmwares, to store some games' data. PGD means "Protected Game Data".

Location

PGD data can be:

• packed inside .pgd files: seen somewhere?
• stored in DATA.PSAR (PSISOIMG0000 for PS1 games), themselves part of EBOOT.PBP. EBOOT.PBP can be stored in .pkg. There can be many .PGD files in one DATA.PSAR.

Stucture

Offset	Length	Name	Description
0x0	0x4	Magic	PGD
0x4	0x4	Version	01 00 00 00
0x8	0x4	Offset or (encryption mode + padding)	01 00 00 00
0xC	0x4	Maybe padding	00 00 00 00
0x10	0x10	Key	AES-128 bit hash key used for header decryption.
0x20	0x10	Hash	Generated hash from the 0x10 key.
0x30-5F	0x30	?encrypted?	Encrypted header of the PGD which when decrypted reveals a new hash key and four bit fields. The first is NULL, the second represents the decrypted data size, the third is the decrypting chunk size and the fourth is the data hash address.
0x60	0x10	?encrypted?	File hash.
0x70	0x10	?encrypted?	Hash generated from the sceIoIoctl key.
0x80	0x10	?encrypted?	Encrypted hash generated from the sceIoIoctl key.
0x90	0x10	?encrypted?	Data hash.
0xA0	0x10	?encrypted?	Encrypted data hash.

List of games using PGD

This is a non-exhaustive list.

• Most PS1onPSP games. ?Every?
• Kingdom Hearts: Birth by Sleep: big PGD files
• God of War: Ghost of Sparta: small PGD files
• SOCOM: FireTeam Bravo 2 (US): see psheet.
• Killzone: Liberation (US and EU): see psheet.
• Hilton Garden Inn: Ultimate Team Play (US): see psheet.
• ?Sword Art Online?
• ?Naruto Shippuden Ultimate Ninja Heroes 3?

Notes

See Hykem's explanation.