"""Helper function for BitLocker Drive Encryption (BDE) support."""
[docs]
def BDEOpenVolume(bde_volume, path_spec, file_object, key_chain):
"""Opens the BDE volume using the path specification.
Args:
bde_volume (pybde.volume): BDE volume.
path_spec (PathSpec): path specification.
file_object (FileIO): file-like object.
key_chain (KeyChain): key chain.
"""
password = key_chain.GetCredential(path_spec, "password")
if password:
bde_volume.set_password(password)
recovery_password = key_chain.GetCredential(path_spec, "recovery_password")
if recovery_password:
bde_volume.set_recovery_password(recovery_password)
startup_key = key_chain.GetCredential(path_spec, "startup_key")
if startup_key:
bde_volume.read_startup_key(startup_key)
bde_volume.open_file_object(file_object)
[docs]
def BDEUnlockVolume(bde_volume, path_spec, key_chain):
"""Unlocks a BDE volume using the path specification.
Args:
bde_volume (pybde.volume): BDE volume.
path_spec (PathSpec): path specification.
key_chain (KeyChain): key chain.
Returns:
bool: True if the volume is unlocked, False otherwise.
"""
is_locked = bde_volume.is_locked()
if is_locked:
password = key_chain.GetCredential(path_spec, "password")
if password:
bde_volume.set_password(password)
recovery_password = key_chain.GetCredential(path_spec, "recovery_password")
if recovery_password:
bde_volume.set_recovery_password(recovery_password)
startup_key = key_chain.GetCredential(path_spec, "startup_key")
if startup_key:
bde_volume.read_startup_key(startup_key)
is_locked = not bde_volume.unlock()
return not is_locked