Issue when loading a key

[njordr]

Hi.

If I try to load a key with the following code:

from cryptography.hazmat.primitives import serialization
from cryptography.hazmat.backends import default_backend
serialization.load_pem_private_key('test30.key', 'licupitinguanniancoffmat', default_backend())

I got the following error:
TypeError: initializer for ctype 'char[]' must be a bytes or list or tuple, not str

If I try with:
serialization.load_pem_private_key(open('test30.key', 'rb'), 'licupitinguanniancoffmat', default_backend())

I got:
TypeError: '_io.BufferedReader' object cannot be interpreted as an integer

If I try with:
serialization.load_pem_private_key(open('test30.key', 'rb').read(), 'licupitinguanniancoffmat', default_backend())

I got:
From cffi callback <function _pem_password_cb at 0x7f2f84e910d0>:
Traceback (most recent call last):
File "/usr/local/virtualenv/syseye/lib/python3.4/site-packages/cryptography/hazmat/backends/openssl/backend.py", line 676, in _pem_password_cb
pw_buf[:len(ud.password)] = ud.password
TypeError: expected an object with a buffer interface

Could you please explain me how to import a private key?

Thanks,
Giovanni
test30.zip

[Lukasa]

@njordr You need to pass the PEM data directly. Your second attempt was closest:

serialization.load_pem_private_key(open('test30.key', 'rb').read(), 'licupitinguanniancoffmat', default_backend())

[Lukasa]

See also the relevant documentation page, which calls for "the PEM encoded data".

[alex]

What @Lukasa said.

[alex]

The password must be a bytes object.

[njordr]

Apologize to not view that the password must be a byte object.

Many thanks