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by random at 7:35 PM EST on January 18, 2020
I see, here is the .apk file : https://mega.nz/#!5Npn2YDD!DN3UXybCHf7lCgWTDFm0QsEok-IhKNWe_xfIsrE30qk
by bnnm at 2:22 PM EST on January 20, 2020
Oh, I already checked the .apk, as mentioned it's hard to find the key in this case. I'll try again later though.

Was just pointing out that having the .hca/awb alone isn't enough to do anything, so that people can stop uploading that.
by sandimy at 4:16 PM EST on February 19, 2020
An update on the game I asked about last Nov.

game:ブラックスター -Theater Starless-
id: jp.ne.donuts.pds
apk file: https://mega.nz/#!Plc3lS5R!qXbXHe8kK4uBdZshX3mW4JFSWOvoaWT3Phaxwx4DwKE

bnnm kindly helped me found the key but I failed to decode the hca files. Thought it was something wrong with the tools I used and left this behind.

I just found it today that the key bnnm gave me(0x0000001C5E0D3154) was used for criware movie files(usm). I used this key and decoded a movie file successfully.

Seems that this game uses different keys for audios and videos. Could someone check this please?

edited 4:32 PM EST February 19, 2020
by bnnm at 2:47 PM EST on February 22, 2020
@random - added key for Detective Connan Runner in the latest vgmstream.

Also updated cri movie unpacked tool to handle multiple streams found in Dragalia Lost
https://mega.nz/#!TJQniYwL!Dp_D-KvzVlVgTwqzVJc1n3vslBZsHdy8pdDqzhRtsOI

@sandimy - all music works fine in vgmstream, but you must open the .acb instead of extracting the .hca.
Otherwise you'll need to manually create a key per song, since there is a sub-key in every .acb.
by sandimy at 11:01 AM EST on February 24, 2020
@bnnm Ah yes I extracted the .hcas... Now it works! Thank you so much!!!!
by unisonair at 7:50 AM EST on March 1, 2020
Hi guys, I'm trying to extract the video in a game called Uni's On Air. I tried for a few days, still haven't managed to find anything decent. Can you guys please help me to find the key?

id:jp.aktsk.unisonair

The APK along with some cpk (usme files inside) files downloaded from the server:
https://drive.google.com/open?id=196wwkdk2JCP-8qak0QkbWMvJ1VQoBV9j

Any help would be much appreciated. Thank you.
by bnnm at 7:10 PM EST on March 1, 2020
Key is 0000047561F95FCF, use the cri movie unpacker tool above to decrypt.
by unisonair at 1:41 PM EST on March 2, 2020
@bnnm Thanks! It works like a treat!

And may I ask how do you derive that key?
by bnnm at 4:46 PM EST on March 2, 2020
USM keys are often the same as HCA keys (not always), so I just tried that. The HCA key is the same as Shin Tennis no Ouji-sama: Rising Beat (same dev), plus in Unity games keys are often in plain text and easy to find. (also see here)
by ChillyBilly at 12:49 AM EDT on March 22, 2020
Hey guys, I was wondering if anyone is able to decrypt the HCAs for Touhou Gensou Mahjong for the Switch? Whenever I try to play the files, they either come out silent or glitched. I have a similar problem with Billion Road (also for Switch). Thanks in advance to anyone who can help!

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