Hello,
I am trying to serialize a private key using private_bytes method. I want
to serialize a RSA private key with no password in one python module and
bring it back in another so that I can use the private key for signing
certificates.
I tried doing this :
privkey_pem = privkey.private_bytes(encoding=serialization.Encoding.PEM,\
format=serialization.PrivateFormat.PKCS8,\
encryption_algorithm=KeySerializationEncryption())
However in the private_bytes method there are a couple checks one for
KeySerializationEncryption type and another for
if not isinstance(encryption_algorithm,
serialization.KeySerializationEncryption):
raise TypeError(
"Encryption algorithm must be a KeySerializationEncryption "
"instance"
)
if isinstance(encryption_algorithm, serialization.NoEncryption):
password = b""
passlen = 0
evp_cipher = self._ffi.NULL
elif isinstance(encryption_algorithm,
serialization.BestAvailableEncryption):
# This is a curated value that we will update over time.
evp_cipher = self._lib.EVP_get_cipherbyname(
b"aes-256-cbc"
)
password = encryption_algorithm.password
passlen = len(password)
if passlen > 1023:
raise ValueError(
"Passwords longer than 1023 bytes are not supported by "
"this backend"
)
else:
raise ValueError("Unsupported encryption type")
So I am getting the unsupported encryption type value error.
Thanks,
Ram
