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from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.serialization import load_pem_private_key
from cryptography.hazmat.primitives.serialization import load_pem_public_key
from cryptography.hazmat.primitives.serialization import load_ssh_public_key
from cryptography.x509 import load_pem_x509_certificate
from authlib.common.encoding import to_bytes
def load_pem_key(raw, ssh_type=None, key_type=None, password=None):
raw = to_bytes(raw)
if ssh_type and raw.startswith(ssh_type):
return load_ssh_public_key(raw, backend=default_backend())
if key_type == "public":
return load_pem_public_key(raw, backend=default_backend())
if key_type == "private" or password is not None:
return load_pem_private_key(raw, password=password, backend=default_backend())
if b"PUBLIC" in raw:
return load_pem_public_key(raw, backend=default_backend())
if b"PRIVATE" in raw:
return load_pem_private_key(raw, password=password, backend=default_backend())
if b"CERTIFICATE" in raw:
cert = load_pem_x509_certificate(raw, default_backend())
return cert.public_key()
try:
return load_pem_private_key(raw, password=password, backend=default_backend())
except ValueError:
return load_pem_public_key(raw, backend=default_backend())
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