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ed25519_keygen.py
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ed25519_keygen.py
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# Copyright 2021 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# [START mediacdn_generate_ed25519_keys]
import base64
from cryptography.hazmat.primitives import serialization
from cryptography.hazmat.primitives.asymmetric import ed25519
def generate_ed25519_keypair(
private_key_filename: str = "private.key", public_key_filename: str = "public.pub"
) -> None:
"""Generate Ed25519 Keys Pairs.
Args:
private_key_filename(default private.key): private key filename as a string.
public_key_filename(default public.pub): public key filename as a string
Returns:
"""
private_key = ed25519.Ed25519PrivateKey.generate()
public_key = private_key.public_key()
private_key_str = private_key.private_bytes(
encoding=serialization.Encoding.Raw,
format=serialization.PrivateFormat.Raw,
encryption_algorithm=serialization.NoEncryption(),
)
print("Private Key:\t", base64.urlsafe_b64encode(private_key_str))
public_key_str = public_key.public_bytes(
encoding=serialization.Encoding.Raw, format=serialization.PublicFormat.Raw
)
print("Public Key:\t", base64.urlsafe_b64encode(public_key_str))
with open(private_key_filename, "wb") as fp:
fp.write(base64.urlsafe_b64encode(private_key_str))
print(f"Private Key is written to:\t{private_key_filename}")
with open(public_key_filename, "wb") as fp:
fp.write(base64.urlsafe_b64encode(public_key_str))
print(f"Public Key is written to:\t{public_key_filename}")
# [END mediacdn_generate_ed25519_keys]
if __name__ == "__main__":
generate_ed25519_keypair()