Decrypt psp .PGD

[stephanehl]

Please anyone can help me to decrypt this file with compression .PGD


Here is a sample.

Code: Select all

http://www.megaupload.com/?d=WFYOZ1YB

Please i really need your help.

Best Regards,
Mensinhl

[alon]

[PGD File header]:
Code:
0x00: 00 50 47 44 01 00 00 00 01 00 00 00 00 00 00 00 -> " PGD" and three bit fields that act as flags for version and encryption mode.
0x10: AES-128 bit hash key used for header decryption.
0x20: Generated hash from the 0x10 key.
0x30 - 0x50: 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: File hash.
0x70: Hash generated from the sceIoIoctl key.
0x80: Encrypted hash generated from the sceIoIoctl key.
0x90: Data hash.
0xA0: Encrypted data hash.

[Vash]

load the game using JPCSP and flag in the option to save decrypted files or just install the game content so it will decrypt it for you...

[ninuzzu]

[PGD File header]:
Code:
0x00: 00 50 47 44 01 00 00 00 01 00 00 00 00 00 00 00 -> " PGD" and three bit fields that act as flags for version and encryption mode.
0x10: AES-128 bit hash key used for header decryption.
0x20: Generated hash from the 0x10 key.
0x30 - 0x50: 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: File hash.
0x70: Hash generated from the sceIoIoctl key.
0x80: Encrypted hash generated from the sceIoIoctl key.
0x90: Data hash.
0xA0: Encrypted data hash.

using the info provided, can anyone write a bms script for this? thx

[raykingnihong]

[PGD File header]:
Code:
0x00: 00 50 47 44 01 00 00 00 01 00 00 00 00 00 00 00 -> " PGD" and three bit fields that act as flags for version and encryption mode.
0x10: AES-128 bit hash key used for header decryption.
0x20: Generated hash from the 0x10 key.
0x30 - 0x50: 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: File hash.
0x70: Hash generated from the sceIoIoctl key.
0x80: Encrypted hash generated from the sceIoIoctl key.
0x90: Data hash.
0xA0: Encrypted data hash.

using the info provided, can anyone write a bms script for this? thx

Wish I had the great god resolve this issue, or the pointing direction