Editing Crypto / DRM

'''Update: AES Content Keys'''

== AES Content Keys ==
'''84 41 07 03 DA A8 4E 86 AC D4 F4 DF A2 44 1F 37'''

== Boot Signature ==

'''/BOOT/SESS/STRT/bsig=DL_GameDev-0012345-Exampl-Devel-Test1&vers=PG&edtn=0'''

'''''(Not posting actual bsig of games or apps to stop this from being fixed before its useful)'''''

First 2 bytes of the sig "0012345" are dev specific and dont change when an update or patch is issued.

3rd Byte is predictable based on prior update for the application.

'''/BOOT/SESS/HRDW/mntd=1&knct=0'''


(Extra Auth/Boot Signature ID)

'''''Retail BootSigID Update 1: e9b803''''' 

'''dbf4c9a69f7cc46952e9b803'''

'''''Retail BootSigID Update 2: f3df56'''''

'''dbf4c9a69f7cc46952f3df56'''


'''/BSID/STR0/TLM3/data=dbf4c9a6 (8 Bytes)'''

'''/BSID/STR1/TLM3/data=9f7cc469 (8 Bytes)'''

'''/BSID/STR2/TLM3/data=52UPDATE (8 Bytes)'''

'''Last 6 bytes of /STR2/ change every time a new update or patch is issued. Others stay constant and are app specific.'''


'''/BSID/STR0/STR1/bsid=dbf4c9a69f7cc46952UPDATE (24 Bytes)'''


'''Updates for certain apps and games can be skipped by making the BootSig and the BootSigID match the most recent patch when the check is done. '''

Note: Some apps also check ''"minRequiredAppVersion"''.

== Compression & Encryption ==
Some games are packaging game updates/script files with lzma. After you decompress the lzma the files you get have an additional layer of encryption.

== Registry ==
'''HardwareId= getRegistry().hardwareId'''

'''Manufacturing Id= getRegistry().hardwareId:sub(1, 4)'''

'''Model Id= getRegistry().hardwareId:sub(1, 8)'''

'''registerStateType(default, cancel, reset)'''

==  PseudoRandom Number Generator ==
'''''math.randomseed(Time)'''''

''The Randomseed for software based PRNG is just time, allowing you to predict the seed due to low entropy''

<ref>The choice of a good random seed is crucial in the field of computer security. When a secret encryption key is pseudo-randomly generated, having the seed will allow one to obtain the key.</ref>

 <references>http://en.wikipedia.org/wiki/Random_seed</references>

== Video DRM ==

=== PlayReady ===
[http://en.wikipedia.org/wiki/PlayReady PlayReady DRM] (used by PS4/PS3 [http://en.wikipedia.org/wiki/Netflix Netflix] e.g.) - note: 4K is not supported as that would require PlayReady 3.0

=== Marlin ===
[http://en.wikipedia.org/wiki/Marlin_%28DRM%29 Marlin DRM] (used by PS4/PS3/PSP)

=== Advanced Access Content System (AACS) ===
[http://en.wikipedia.org/wiki/Advanced_Access_Content_System AACS] (used by BluRay Video / BD]

=== AES encrypted video ===
[http://en.wikipedia.org/wiki/Advanced_Encryption_Standard AES]-128 (used for [http://www.unified-streaming.com/support/documentation/drm-packaging/hls-aes-encryption/ Live Streaming]?)

AMD64 has [http://en.wikipedia.org/wiki/AES_instruction_set AES-NI] support

=== Key selection vector (KSV) ===
[http://en.wikipedia.org/wiki/Key_selection_vector KSV] (used by [[HDCP]])

=== Content Scramble System (CSS) ===
[http://en.wikipedia.org/wiki/Content_Scramble_System CSS] (used by DVD-Video)

=== Cinavia ===
[https://en.wikipedia.org/wiki/Cinavia Cinavia] - in short terms, PS4 has Cinavia built-in the [[System Firmware]]. Message Code 3 = CE-37960-5



{{Reverse Engineering}}
<noinclude>[[Category:Main]]</noinclude>