36 lines
1.4 KiB
ReStructuredText
36 lines
1.4 KiB
ReStructuredText
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Generate a signed URL for Amazon CloudFront
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The following example shows how to generate a signed URL for Amazon CloudFront.
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Note that you will need the ``cryptography`` `library <https://cryptography.io/en/latest/>`__ to follow this example::
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import datetime
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from cryptography.hazmat.backends import default_backend
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from cryptography.hazmat.primitives import hashes
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from cryptography.hazmat.primitives import serialization
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from cryptography.hazmat.primitives.asymmetric import padding
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from botocore.signers import CloudFrontSigner
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def rsa_signer(message):
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with open('path/to/key.pem', 'rb') as key_file:
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private_key = serialization.load_pem_private_key(
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key_file.read(),
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password=None,
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backend=default_backend()
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)
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return private_key.sign(message, padding.PKCS1v15(), hashes.SHA1())
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key_id = 'AKIAIOSFODNN7EXAMPLE'
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url = 'http://d2949o5mkkp72v.cloudfront.net/hello.txt'
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expire_date = datetime.datetime(2017, 1, 1)
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cloudfront_signer = CloudFrontSigner(key_id, rsa_signer)
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# Create a signed url that will be valid until the specific expiry date
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# provided using a canned policy.
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signed_url = cloudfront_signer.generate_presigned_url(
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url, date_less_than=expire_date)
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print(signed_url)
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