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EmuNewz Network › PSP Emulation › JPCSP Official Forum › svn trunk discussion v
Savedata Encryption/Decryption

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Savedata Encryption/Decryption
popsdeco Offline
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#111
02-13-2014, 04:46 AM (This post was last modified: 02-13-2014, 04:46 AM by popsdeco.)
So I modified SAVADATA.java to ignore fuse stuff. Now encryption should be completely alright.
I need testers.

Binary:
https://www.dropbox.com/s/mj92ccgvwoit74.../jpcsp.jar
Diff:
https://www.dropbox.com/s/mj92ccgvwoit74...3458.patch
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Hykem Offline
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#112
02-14-2014, 07:49 PM
(02-13-2014, 04:46 AM)popsdeco Wrote: So I modified SAVADATA.java to ignore fuse stuff. Now encryption should be completely alright.
I need testers.

Binary:
https://www.dropbox.com/s/mj92ccgvwoit74.../jpcsp.jar
Diff:
https://www.dropbox.com/s/mj92ccgvwoit74...3458.patch

Thanks. It does seem to be a KIRK (in Java) related issue, since I've also reached the same conclusions (about the hashes).
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popsdeco Offline
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#113
02-17-2014, 11:17 AM
I got a successful report via DM. So I think this patch can be merged into jpcsp svn tree.
Unfortunately he disables receiving DM.

If you watch still this thread, please enable DM or send email to popsdeco at gmail...
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Hykem Offline
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#114
03-04-2014, 09:18 PM
(02-17-2014, 11:17 AM)popsdeco Wrote: I got a successful report via DM. So I think this patch can be merged into jpcsp svn tree.
Unfortunately he disables receiving DM.

If you watch still this thread, please enable DM or send email to popsdeco at gmail...

Sorry. I just sent you a PM regarding this.
Great job! Smile
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popsdeco Offline
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#115
04-13-2014, 04:30 AM
Hykem...
I reviewed r3473 and the patch was wrong...
Please check https://code.google.com/p/jpcsp/source/detail?r=3473
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Hykem Offline
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#116
04-13-2014, 01:59 PM (This post was last modified: 04-13-2014, 09:16 PM by Hykem.)
(04-13-2014, 04:30 AM)popsdeco Wrote: Hykem...
I reviewed r3473 and the patch was wrong...
Please check https://code.google.com/p/jpcsp/source/detail?r=3473

I noticed that, but I found it odd to be required. Does this make SAVEDATA not compatible with the PSP? If so, then it would explain a few things about the algorithm.
I will change this again to match your patch, but could you please check first if the current SAVEDATA produced by JPCSP is loadable on a PSP? I'm interested on detecting exactly what causes the difference. Thanks!

EDIT: Nevermind. I found out why the order was so important in this case.
I've properly implemented SAVEDATA hashing in r3488. The generated SAVEDATA was tested on a real PSP and confirmed to be working. Thanks! Smile
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popsdeco Offline
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#117
04-14-2014, 08:57 AM
Thank you so much.
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qwikrazor87 Offline
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#118
07-12-2014, 12:36 AM
Hello Hykem.
Just wanted to let you know that Key1 is actually the ThreadManForKernel NIDs, that's why you can't find any references to it in the code. Smile
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qwikrazor87 Offline
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#119
07-20-2014, 08:07 PM
Sorry about the double post, figured out the name for the last function, sceSdCleanList. Big Grin
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