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ACB+AWB encryption #56

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mayonai opened this issue Sep 20, 2019 · 1 comment
Open

ACB+AWB encryption #56

mayonai opened this issue Sep 20, 2019 · 1 comment

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@mayonai
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mayonai commented Sep 20, 2019

Hello there, I've been using this tool to try and modify the audio of the game Shadowverse, another Cygames title which has the same 00003657 F27E3B22. While I can decode and encode most acb with the current version of deretore, when the files carry an external AWB, such as bgm, all that outputs is garbage. Do acb+awb have special encryptions, and if so, is there possibility of being able to crack them for the purposes of creating custom music/etc?
I appreciate any help, and apologize for my amateur understanding on the subject.

@hozuki
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hozuki commented May 31, 2020

I don't think there is extra encryptions when using acb+awb. I guess that the problem is caused by a sub key, and DereTore v0.8.0+ has the ability to handle that. Confusing. But it's only a guess, without seeing any samples.

You can try acb2hcas (if you have vgmstream) and acb2wavs in libcgss. They worked correctly with acb+awb (at least in this issue). acb2wavs in DereTore should have the similar behavior. If that's not the case, there is a bug and could you provide a sample then?

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