What does sqlcipher-android actually do with password with SQLite Database Room DB?

[Pooran_Kharol]

What does sqlcipher-android actually do with password in SQLite Database with Room DB?
I already went through the code i am unable to find it?

[sjlombardo]

The password is used to derive an encryption key for the database, as described here:

https://www.zetetic.net/sqlcipher/design/