:py:mod:`dissect.fve.bde.key`
=============================

.. py:module:: dissect.fve.bde.key




Module Contents
---------------


Functions
~~~~~~~~~

.. autoapisummary::
   :nosignatures:

   dissect.fve.bde.key.stretch
   dissect.fve.bde.key.derive_user_key
   dissect.fve.bde.key.derive_recovery_key
   dissect.fve.bde.key.check_recovery_password



.. py:function:: stretch(password: bytes, salt: bytes, rounds: int = 1048576) -> bytes

   Stretch a password with a specified salt.

   Bitlocker uses this as the key derivation algorithm.


.. py:function:: derive_user_key(user_password: str) -> bytes

   Derive an AES key from a given user passphrase.


.. py:function:: derive_recovery_key(recovery_password: str) -> bytes

   Derive an AES key from a given recovery password.


.. py:function:: check_recovery_password(recovery_password: str) -> bool

   Check if a given recovery password is valid.