Newer XP3 encryption? [Grisaia Phantom Trigger]

[BenCat07]

So it seems there is a new Encryption for .xp3 files since a while, aluigi managed to make an extractor for the old format ( see nekopara.xp3 ), this encryption is used for newer Visual Novel Games like e.g. Grisaia Phantom trigger, additionally there is also a .sig file ( which is probably only used for checking the contents ), due to me finding no way to extract these new xp3 files i am asking here if someone maybe has either a program for it, or if aluigi could possibly add a script for the new format? i can provide a sample, just need to know which of the ones i have provided below i should provide as they all are pretty massive (besides the voice xp3 which i don't know what file format is stored inside), help is appreciated

~ BenCat07
( Also sorry for the fuss about the Bloons TD Battles Password from a while ( a year or two ) ago, i'm truly sorry for that now that i have more knowledge and am older )

data.xp3 (900mb)
fgimage.xp3 (342mb)
voice.xp3 (3,6mb)
vol2.xp3 (986mb) (vol2 due to the Grisaia Phantom Trigger VN being split into multiple parts, this is the volume 2's name)

[aluigi]

There are already 3 topics open about Nekopara xp3, what exact game is this one?
viewtopic.php?t=576
viewtopic.php?t=3389
viewtopic.php?t=4218

[BenCat07]

Grisaia Phantom Trigger, https://store.steampowered.com/app/6065 ... gger_Vol1/ is volume 1, In My case i was trying to reverse Volume 2 Though, is the encryption unique for each game now?

[BenCat07]

I'm pretty sure all Volumes use the same obfuscation/encryption though

[BenCat07]

There are already 3 topics open about Nekopara xp3, what exact game is this one?
viewtopic.php?t=576
viewtopic.php?t=3389
viewtopic.php?t=4218

These games use an old xp3 encryption btw

[BenCat07]

Further Clarification: extractt
ing these .xp3 files gives thousands of .dat files and wrongly formatted .ogg or .dll files