# Copyright (C) 2016-2018 Virgil Security Inc.
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from .crypto import VirgilCrypto
[docs]class PrivateKeyExporter(object):
"""
PrivateKeyExporter provides a list of methods that lets user to export and import private key.
Args:
password: The password for private key.
"""
def __init__(
self,
password=None # type: str
):
self.crypto = VirgilCrypto()
self.__password = password
[docs] def export_private_key(self, private_key):
# type: (PrivateKey) -> Union[bytes, bytearray]
"""
Exports the PrivateKey into material representation. If PrivateKeyExporter was
instantiated with password then it will be used to export private key.
Args:
private_key: The private key.
Returns:
Private key in material representation of bytes.
"""
if self.__password:
return self.crypto.export_private_key(private_key, self.__password)
else:
return self.crypto.export_private_key(private_key)
[docs] def import_private_key(self, key_data):
# type: (Union[bytes, bytearray]) -> PrivateKey
"""
Imports the private key from its material representation. If PrivateKeyExporter was
instantiated with password then it will be used to import private key.
Args:
key_data: The private key material representation bytes.
Returns:
The instance of PrivateKey imported.
"""
if self.__password:
return self.crypto.import_private_key(key_data, self.__password)
else:
return self.crypto.import_private_key(key_data)