09-18-2010, 03:04 PM
All games have a main boot file that tells the PSP what to do and which files to load. JPCSP, like a PSP, interprets this file for the same purpose, but sometimes, and in most recent games, we can't access it because it's encrypted.
What prevents us from decrypting that file, is the fact that no one knows how to decrypt them and it's not easy at all to figure it out. The PSP uses a dedicated hardware solution (KIRK chip) to process this encryption and no one but Sony knows how it works and which keys are needed in the process.
By using a real PSP, homebrew applications can communicate with this chip and tell it to decrypt that file without having to know how it does it. That's why we say you need a real PSP for that, atleast until the encryption mechanism is not figured out.
What prevents us from decrypting that file, is the fact that no one knows how to decrypt them and it's not easy at all to figure it out. The PSP uses a dedicated hardware solution (KIRK chip) to process this encryption and no one but Sony knows how it works and which keys are needed in the process.
By using a real PSP, homebrew applications can communicate with this chip and tell it to decrypt that file without having to know how it does it. That's why we say you need a real PSP for that, atleast until the encryption mechanism is not figured out.