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Dariusc123456
Joined: 12 Aug 2008
Posts: 394
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 Posted: Sat Aug 08, 2009 7:12 am Post subject: PSP with a signed ram? |
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Could it be possible that sony might have the ram signed so if any code try to modify the ram, it wont work?
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slasher2661996
Joined: 22 Feb 2009
Posts: 91
Location: Melbourne Australia ZOMG
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| Posted: Sat Aug 08, 2009 10:20 am Post subject: |
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| maybe but it wouldn't be that hard to bypass, as they would need to write a function for the older games, and we could just find and use that function |
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Davee
Joined: 22 Jun 2009
Posts: 59
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| Posted: Sat Aug 08, 2009 10:29 am Post subject: Re: PSP with a signed ram? |
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| Dariusc123456 wrote: | | Could it be possible that sony might have the ram signed so if any code try to modify the ram, it wont work? |
Erm, global variables? |
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Dariusc123456
Joined: 12 Aug 2008
Posts: 394
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| Posted: Sat Aug 08, 2009 10:43 am Post subject: |
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| slasher2661996 wrote: | | maybe but it wouldn't be that hard to bypass, as they would need to write a function for the older games, and we could just find and use that function |
But even if they write a function for it, it still need to be encrypted with a rsa key. Knowing if the AES keys are located within the psp hardware, they could also store the rsa private keys for the ram within it too.
The reason i ask because on the psp go (4k) that if sony might have new security features on there.
EDIT:
How come that the digital signature within the fw is more than 20bytes? Did they sign the eboot with sha-2 or sha-128? In 3.60ofw, the signature is 20 bytes, and the psp games/demo's form the store is 40bytes.
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m0skit0
Joined: 02 Jun 2009
Posts: 226
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| Posted: Sat Aug 08, 2009 7:57 pm Post subject: |
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I don't think that would be a nice idea. Do you imagine the amount of encryption/decryption load required to do an encrypted RAM? That would be foolish from Sony, and PSP wouldn't be able to handle that at a decent speed. Not to talk about the games and all the 3D calcs + encryption/decryption load...
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Dariusc123456
Joined: 12 Aug 2008
Posts: 394
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| Posted: Sun Aug 09, 2009 4:13 am Post subject: |
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| m0skit0 wrote: | | I don't think that would be a nice idea. Do you imagine the amount of encryption/decryption load required to do an encrypted RAM? That would be foolish from Sony, and PSP wouldn't be able to handle that at a decent speed. Not to talk about the games and all the 3D calcs + encryption/decryption load... |
Sony knows the hardware better than us, so they will think of something.
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PSX/PS1 - HACK - Game Shark
PS2 - HACK - Swap
PSP - HACK - Pandora
PS3 - ? |
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