Dissidia: Final Fantasy - ULUS10437

[Itaru]

Encrypted games have tags in their headers which tells the PSP which encryption key and method are used so that the PSP is able to decrypt them using the correct key and method based on the tag. The problem is that this game as well as a couple of others that use the tag "C0CB167C" cannot be decrypted by Jpcsp since the method of encryption/mangling for that particular tag is not known yet AFAIK. The only way to decrypt such games with that particular tag is by using a real PSP since its firmware has the necessary function to do the proper decryption. Without knowing the algorithm used to encrypt/mangle those games with the "C0CB167C" tag, there's no way to emulate the proper decryption in Jpcsp even if all the keys are known.

I hope I'm wrong about this though, and that the dev team actually already knows the algorithm to decrypt games with the "C0CB167C" tag but they just haven't gotten around to implementing it in Jpcsp yet.