44 lines
1.6 KiB
Python
44 lines
1.6 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from cryptography.hazmat.backends import default_backend
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from cryptography.hazmat.primitives.asymmetric import ec
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from cryptography.hazmat.primitives import serialization
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def create_jws_keypair(private_key_path, public_key_path):
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"""Create an ECDSA key pair using an secp256r1, or NIST P-256, curve.
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:param private_key_path: location to save the private key
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:param public_key_path: location to save the public key
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"""
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private_key = ec.generate_private_key(ec.SECP256R1(), default_backend())
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with open(private_key_path, 'wb') as f:
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f.write(
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private_key.private_bytes(
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encoding=serialization.Encoding.PEM,
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format=serialization.PrivateFormat.PKCS8,
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encryption_algorithm=serialization.NoEncryption()
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)
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)
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public_key = private_key.public_key()
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with open(public_key_path, 'wb') as f:
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f.write(
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public_key.public_bytes(
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encoding=serialization.Encoding.PEM,
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format=serialization.PublicFormat.SubjectPublicKeyInfo
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)
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)
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