Cookie Run OvenBreak MIDI Stream Cipher Possibly Changed by kookeerawn at 12:41 AM EDT on July 6, 2021

The MIDI files in Cookie Run OvenBreak used the SALSA20 stream cipher since the soft launch in 2016.

As of the Season 6 update, the MIDIs are now using a different type of stream cipher, making SimonTime's gbsalsa tool useless.

edited 12:41 AM EDT July 6, 2021

edited 12:42 AM EDT July 6, 2021

Test by kookeerawn at 9:59 PM EDT on August 8, 2021

I have a ZIP file containing S6 MIDIs.

Investigation by kookeerawn at 2:08 PM EST on February 17, 2022

I tried to investigate by putting the bgm_map_land01.mid file in three different versions on Notepad.

RAW (decrypted)


SALSA20 (old encryption)


??? (new encryption)


I have a link to the encrypted MIDI file.
Link: bgm_map_land01.mid

edited 2:15 PM EST February 17, 2022

Season 6 is over! by kookeerawn at 10:27 PM EDT on June 23, 2022

Well folks, looks like Season 6 has come to an end.
Here is a link to the ZIP file of all encrypted CROB Season 6 MIDI files.

Link: Cookie Run OvenBreak Season 6 Encrypted MIDIs.zip

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