forums.ps2dev.org Forum Index forums.ps2dev.org
Homebrew PS2, PSP & PS3 Development Discussions
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Interesting patent 02-11-2010

 
Post new topic   Reply to topic    forums.ps2dev.org Forum Index -> PS3 Development
View previous topic :: View next topic  
Author Message
adresd



Joined: 17 Jan 2004
Posts: 43

PostPosted: Sun Feb 14, 2010 9:02 am    Post subject: Interesting patent 02-11-2010 Reply with quote

A new patent seems to have surfaced by Kanna Shimizu:

20100037068 Method to Protect Secrets Against Encrypted Section Attack 02-11-2010

As can be seen, dated 02-11-2010, so very recent.

Interesting reading as I am sure some of you will agree.

abstract:
"A method, system, and computer-usable medium are disclosed for controlling unauthorized access to encrypted application program code. Predetermined program code is encrypted with a first key. The hash value of an application verification certificate associated with a second key is calculated by performing a one-way hash function. Binding operations are then performed with the first key and the calculated hash value to generate a third key, which is a binding key. The binding key is encrypted with a fourth key to generate an encrypted binding key, which is then embedded in the application. The application is digitally signed with a fifth key to generate an encrypted and signed program code image. To decrypt the encrypted program code, the application verification key certificate is verified and in turn is used to verify the authenticity of the encrypted and signed program code image. The encrypted binding key is then decrypted with a sixth key to extract the binding key. The hash value of the application verification certificate associated with the second key is then calculated and used with the extracted binding key to extract the first key. The extracted first key is then used to decrypt the encrypted application code."

http://www.faqs.org/patents/app/20100037068
Back to top
View user's profile Send private message
Ps3Rips



Joined: 02 May 2007
Posts: 30

PostPosted: Mon Feb 15, 2010 10:40 am    Post subject: Reply with quote

Very Interesting.
Seems to be a response to Geohot and the current round of hacking taking place.

However from reading her previous work
http://dslab.lzu.edu.cn:8080/members/zhangwei/doc/Cell_Broadband_Engine_processor_vault_security_architecture.pdf

it would seem that she predicted those types of attacks and if they implemented all the security in that high level paper, then in theory at least Geohot's attack may give Lv0 command names back via the peek readout but the system should still remain rather secure.
_________________
Kicking out a bad guy
Beating up a monster
Fighting against evil
I'll rescue this town
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    forums.ps2dev.org Forum Index -> PS3 Development All times are GMT + 10 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group