Dont understand how signature works

[hebisnake]

Sorry im kinda lost and need help, im trying to retrieve an LSAV video with a different md5, and i dont really understand what i should do or modify with the tool, could you clarify? thanks in advance

VID_20231231_113125.de45bc78bc32bcb22cda1723855cf2da.lsav

this is the file name

[ObikBobik]

basically you need the .apk of the gallery app that the video was encrypted in so you can extract its signature and set the secretKey to the signature as described in README.md