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+---- Thread: Savedata Encryption/Decryption (/showthread.php?tid=3673)
RE: Savedata Encryption/Decryption - DragonNeos - 01-15-2014
Hykem doesn't have direct control over the buildbot. Either the buildbot has broken down (in which case someone will need to contact Orphis) or there was an error in building JPCSP with Hykem's latest changes.
RE: Savedata Encryption/Decryption - popsdeco - 01-16-2014
Thank you so much... But as I said before I don't have test environment of jpcsp.
Do savedatas from r3436 are working on real PSP?
RE: Savedata Encryption/Decryption - Hykem - 01-16-2014
(01-15-2014, 09:22 PM)DragonNeos Wrote: Hykem doesn't have direct control over the buildbot. Either the buildbot has broken down (in which case someone will need to contact Orphis) or there was an error in building JPCSP with Hykem's latest changes.
Sorry about that. I've contacted Orphis and is indeed a SVN issue in the buildbot.
Should be fixed tonight.
(01-16-2014, 09:35 AM)popsdeco Wrote: Thank you so much... But as I said before I don't have test environment of jpcsp.
Do savedatas from r3436 are working on real PSP?
Unfortunately I couldn't test the changes with a real PSP (I currently don't have mine available). But I did compare the hashing algorithm with PPSSPP and the results appear identical (using the same SHA-1 seed, otherwise the results would always be random).
RE: Savedata Encryption/Decryption - akaya - 01-17-2014
Loading SoraYume savefile still gives the error message in r3437.
RE: Savedata Encryption/Decryption - thelight - 01-17-2014
(01-17-2014, 01:50 AM)akaya Wrote: Loading SoraYume savefile still gives the error message in r3437.
If you try read SoraYume savefile in PSP or PPSSPP, it will ask you : "Do you want to read this save" But the old jpcsp skip this. The new jpcsp, however will try ask you "Do you want to read this save" like psp. That may be what cause this bug.
The another bug is if you try to delete in you psp, it also ask you : "Do you want to delete this save" the new jpcsp will skip asking and delete savedata Without asking.
and you should not try delete game save which jpcsp is already run it, even the game ask you to do that. jpcsp can not delete that save, or jpcsp will stop there. （Endless loop）
I am not good at English, I hope you know what I say.
RE: Savedata Encryption/Decryption - popsdeco - 01-17-2014
(01-16-2014, 03:06 PM)Hykem Wrote:Oh oh oh... Should I switch sce functions to this?(01-16-2014, 09:35 AM)popsdeco Wrote: Thank you so much... But as I said before I don't have test environment of jpcsp.
Do savedatas from r3436 are working on real PSP?
Unfortunately I couldn't test the changes with a real PSP (I currently don't have mine available). But I did compare the hashing algorithm with PPSSPP and the results appear identical (using the same SHA-1 seed, otherwise the results would always be random).
https://github.com/hrydgard/ppsspp/blob/master/Core/HLE/sceChnnlsv.cpp
Though it seems I still use savedata side functions from jpcsp :p
RE: Savedata Encryption/Decryption - Hykem - 01-17-2014
(01-17-2014, 11:33 AM)popsdeco Wrote:(01-16-2014, 03:06 PM)Hykem Wrote:Oh oh oh... Should I switch sce functions to this?(01-16-2014, 09:35 AM)popsdeco Wrote: Thank you so much... But as I said before I don't have test environment of jpcsp.
Do savedatas from r3436 are working on real PSP?
Unfortunately I couldn't test the changes with a real PSP (I currently don't have mine available). But I did compare the hashing algorithm with PPSSPP and the results appear identical (using the same SHA-1 seed, otherwise the results would always be random).
https://github.com/hrydgard/ppsspp/blob/master/Core/HLE/sceChnnlsv.cpp
Though it seems I still use savedata side functions from jpcsp :p
Right now the algorithm is exactly the same for PPSSPP and JPCSP, but since you're writing the application in C/C++ I strongly recommend using the PPSSPP code because it is much easier to adapt (specially since it was written to use the kirk-engine). The only differences are in the second PARAM.SFO hash, because JPCSP tries to generate it while PPSSPP can't. However, this hash may not be necessary at all and I'm currently only investigating it due to some games having issues with SAVEDATA authentication (e.g.: God Eater 2).
RE: Savedata Encryption/Decryption - popsdeco - 01-18-2014
(01-17-2014, 03:45 PM)Hykem Wrote: The only differences are in the second PARAM.SFO hash, because JPCSP tries to generate it while PPSSPP can't.
Yes. Although https://github.com/cielavenir/psp-savedata-endecrypter/commits/master doesn't work well yet, I hope you can win.
RE: Savedata Encryption/Decryption - Hykem - 01-18-2014
In r3438 the issue with SoraYume's SAVEDATA should now be fixed. Also, deleting the SAVEDATA should no longer cause an infinite loop.
I've also changed the PARAM.SFO hashing to match the one used by PPSSPP (always uses mode 0x21).
Could you all please test these issues again? Thanks!
RE: Savedata Encryption/Decryption - akaya - 01-18-2014
(01-18-2014, 05:54 PM)Hykem Wrote: In r3438 the issue with SoraYume's SAVEDATA should now be fixed. Also, deleting the SAVEDATA should no longer cause an infinite loop.
I've also changed the PARAM.SFO hashing to match the one used by PPSSPP (always uses mode 0x21).
Could you all please test these issues again? Thanks!
Yes, it's now fixed. Thank you so much, Hykem.