Dnrweqffuwjtx Cloud Front Net 🆕 Trusted

def _url_safe_base64(self, data: bytes) -> str: return base64.urlsafe_b64encode(data).decode().rstrip("=")

import json policy_str = json.dumps(policy, separators=(",", ":")) signature = self._sign(policy_str) dnrweqffuwjtx cloud front net

policy = { "Statement": [{ "Resource": resource, "Condition": { "DateLessThan": {"AWS:EpochTime": epoch_expire} } }] } data: bytes) -&gt

def __init__(self, key_pair_id: str, private_key_path: str): self.key_pair_id = key_pair_id with open(private_key_path, "rb") as key_file: self.private_key = serialization.load_pem_private_key( key_file.read(), password=None, backend=default_backend() ) policy: str) -&gt

signed_url = f"{url}?Expires={epoch_expire}&Signature={signature}&Key-Pair-Id={self.key_pair_id}" return signed_url else: # Custom policy encoded_policy = self._url_safe_base64(policy_str.encode()) signed_url = f"{url}?Policy={encoded_policy}&Signature={signature}&Key-Pair-Id={self.key_pair_id}" return signed_url if name == " main ": generator = CloudFrontSignedUrlGenerator( key_pair_id="APKAEIBAERJR2EXAMPLE", private_key_path="./private_key.pem" ) url = generator.generate_signed_url( url="https://d111111abcdef8.cloudfront.net/private/video.mp4", expire_time=datetime.datetime.utcnow() + datetime.timedelta(hours=1), ip_range="192.0.2.0/24" ) print(url)

import datetime import re from cryptography.hazmat.primitives import hashes, serialization from cryptography.hazmat.primitives.asymmetric import padding from cryptography.hazmat.backends import default_backend import base64 class CloudFrontSignedUrlGenerator: """ Generate CloudFront signed URLs using a private key. Feature: Custom expiration, IP restriction, and URL wildcard support. """

def _sign(self, policy: str) -> str: signature = self.private_key.sign( policy.encode(), padding.PKCS1v15(), hashes.SHA1() ) return self._url_safe_base64(signature)