paramiko.ed25519key

[nilamo]

A sha256 hex is 64 characters long.
What you have looks like base64 encoded text. So, let's go fishing...

>>> import base64
>>> keydata = b"""RLhdtbhVbFXUeqZh6jm0t5ToI6b4IGbac8R2EkP+Ido="""
>>> decoded = base64.b64decode(keydata)
>>> decoded
b'D\xb8]\xb5\xb8UlU\xd4z\xa6a\xea9\xb4\xb7\x94\xe8#\xa6\xf8 f\xdas\xc4v\x12C\xfe!\xda'
>>> hexhash = decoded.hex()
>>> hexhash
'44b85db5b8556c55d47aa661ea39b4b794e823a6f82066da73c4761243fe21da'
>>> len(hexhash)
64

So maybe if you use the bytes.hex() method (as shown), paramiko can understand what you're passing? ie, try this: key = paramiko.ed25519key.Ed25519Key(data=decodebytes(keydata).hex())