Editing NPDRM
Jump to navigation
Jump to search
The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then publish the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 15: | Line 15: | ||
If a Network DRM content is to be loaded, the [[VSH]] loads the act.dat and the .rif associated to the content (it will download .rif to VSH process memory). | If a Network DRM content is to be loaded, the [[VSH]] loads the act.dat and the .rif associated to the content (it will download .rif to VSH process memory). | ||
For Local DRM content too, the [[VSH]] locates a file with the same CONTENT ID as in NPDRM header, then the signatures are checked (RIF | For Local DRM content too, the [[VSH]] locates a file with the same CONTENT ID as in NPDRM header, then the signatures are checked (last 0x28 bytes of both RIF and act.dat). | ||
If a Free DRM (DRM type 3) content is detected then there is no license check, | If a Free DRM (DRM type 3) content is detected then there is no license check, no need for .rif/act.dat, and a generic klicensee [[Keys#NPDRM_Keys|klic_ps3_free]] will be used for further steps (go to LV2). | ||
Using the RIF_KEY with the [[Keys#NPDRM_Keys|np_act_data_index_dec_key]], it will obtain the actdatIndex, then the execution passes to [[LV2_Functions_and_Syscalls#LV2_Syscalls|LV2 Syscalls 471]]. This function has different parameters depending of the [[#DRM Type]]: | |||
* Local/Network DRM content: syscall471(npd.type, &npd.titleID, NULL, &actdat.keyTable[rif.actDatIndex], &rif.key, npd.license, &npd); // is it titleID or content_id? | |||
* Free DRM content: syscall471(npd.type, &npd.titleID, klic_ps3_free, NULL, NULL, npd.license, &npd); // is it titleID or content_id? | |||
This function has different parameters depending | |||
* Local/Network DRM content: | |||
* Free DRM content: | |||
:<small>* Local DRM contents can also include free games/apps too but require this licensing check</small> | |||
* Local/ | |||
From there, the lv1 hypervisor, by loading [[Hypervisor_Reverse_Engineering#appldr|appldr]], will transform the key by using the [[Keys# | The lv2 keeps a memory table with contentID and the associated key: | ||
* Local/Network DRM content: it converts by AES128 encryption the klicensee to another key (by using a [[Keys#NPDRM_Keys|klicensee_constant value on lv2]], [[IDPS]] and the act.dat) and once transformed it is stored in a memory table. | |||
* Free DRM content: it copies the titleID and the generic klicensee (klic_ps3_free) to a memory table. | |||
From there, the lv1 hypervisor, by loading [[Hypervisor_Reverse_Engineering#appldr|appldr]], will transform the key by using the [[Keys#klic_dec_key|klic_dec_key]] and finally remove the NPDRM layer to start the [[SELF - SPRX]] decryption. | |||
= PS3 NPDRM EDAT decryption steps = | = PS3 NPDRM EDAT decryption steps = | ||
Line 45: | Line 43: | ||
! Value !! Type !! Remarks | ! Value !! Type !! Remarks | ||
|- | |- | ||
| 0 || | | 0 || Debug || Used in SDAT files. | ||
|- | |- | ||
| 1 || Network || It requires network authentication every time the content is launched. See [http://en.wikipedia.org/wiki/PlayStation_Network_outage#Inability_to_use_PlayStation_3_content inability example]. | | 1 || Network || It requires network authentication every time the content is launched. See [http://en.wikipedia.org/wiki/PlayStation_Network_outage#Inability_to_use_PlayStation_3_content inability example]. | ||
Line 51: | Line 49: | ||
| 2 || Local || It requires first time activation online (paid content but also demo and free of charge content). | | 2 || Local || It requires first time activation online (paid content but also demo and free of charge content). | ||
|- | |- | ||
| 3 || Free || On PS3, it does not require any license file nor console activation (act.dat) | | 3 || Free || On PS3, it does not require any license file nor console activation (act.dat). | ||
|- | |- | ||
| | | 0xD || "PS Vita Free" (guessed name) || Free but with license (.rif) requirement, unlike DRM Type 3. | ||
|} | |} | ||
NPDRM contents decryption requires a key, the key licensee or klicensee. Depending on the content's DRM | NPDRM contents decryption requires a key, the key licensee or klicensee. Depending on the content's DRM type, klicensee is got in different ways: | ||
* DRM type Network: klicensee is generated using | * DRM type Network: klicensee is generated using rif + ?to detail? | ||
* DRM type Local: klicensee is generated using | * DRM type Local: klicensee is generated using act.dat + associated rif + console's IDPS | ||
* DRM type Free: klicensee is the constant PS3 Free klicensee (see [[Keys | * DRM type Free: klicensee is the constant PS3 Free klicensee (see NPDRM [[Keys]] and appldr keys) | ||
* DRM type Free | * DRM type "PS Vita Free": maybe same as Local: to check. | ||
= Tools = | = Tools = |