def from_pem(cls, pem):
"""
:param pem: A private key previously encoded as PEM.
:type pem: ``bytes``
:rtype: :class:`~core.PrivateKey`
"""
return PrivateKey(ECPrivateKey.from_pem(pem))
def __init__(self, server_sk=None, server_pk=None):
if server_sk is not None:
self.server_sk = PrivateKey.from_pem(server_sk)
self.server_sk = server_sk
self.server_pk = None
if server_pk is not None:
if isinstance(server_pk, str):
self.server_pk = hex2pub(server_pk)
elif isinstance(server_pk, bytes):
self.server_pk = PublicKey(server_pk)
else:
raise TypeError("Invalid public key type")