def __init__(self, key_handle, asn1):
PrivateKey.__init__(self, key_handle, asn1)<EOL>
:param key_handle:
    A CNG BCRYPT_KEY_HANDLE value (Vista and newer) or an HCRYPTKEY
    (XP and 2003) from loading/importing the key

:param asn1:
    An asn1crypto.keys.PublicKeyInfo object