How is it possible to change your master password while keeping the same encryption key?

[shimizu]

@Parzay

I hope I’m wrong, but my intuition would tell me that the master password becomes just an access token to the data, with the old encryption key being stored somewhere.

Bitwarden doesn’t store your real passwords. Your data will be encrypted/hashed on your local device before being sent to their server. Watch this video for proof. You can also test this yourself at home.

Can You Trust Online Password Managers Like Bitwarden?

Quote from the Encryption page:

Bitwarden always encrypts and/or hashes your data on your local device before anything is sent to cloud servers for storage.