Generate ed25515 OpenSSH keys with Python3 cryptography library

gen-ssh-keys.py

#! /usr/bin/env python3

from cryptography.hazmat.primitives.asymmetric import rsa, ed25519
from cryptography.hazmat.primitives import serialization, hashes

private_key = ed25519.Ed25519PrivateKey.generate()
public_key = private_key.public_key()

our_private = private_key.private_bytes(
    encoding=serialization.Encoding.PEM,
    format=serialization.PrivateFormat.OpenSSH,
    encryption_algorithm=serialization.NoEncryption(),
)

our_public = public_key.public_bytes(
    encoding=serialization.Encoding.OpenSSH, format=serialization.PublicFormat.OpenSSH
)

print(our_private.decode("utf-8"))
print("-----BEGIN OPENSSH PUBLIC KEY-----")
print(our_public.decode("utf-8"))
print("-----END OPENSSH PUBLIC KEY-----")