cdn加速鉴权的作用

import hashlib
import time

def generate_auth_token(url, secret_key, expire_time):
    timestamp = int(time.time())
    sign = hashlib.sha256(f"{url}{timestamp}{secret_key}".encode()).hexdigest()
    return f"{url}?token={sign}&expire={timestamp + expire_time}"

def verify_auth_token(token):
    url, params = token.split('?')
    params = dict(param.split('=') for param in params.split('&'))
    sign = params['token']
    expire = int(params['expire'])
    current_time = int(time.time())
    
    if current_time > expire:
        return False
    
    expected_sign = hashlib.sha256(f"{url}{expire}{secret_key}".encode()).hexdigest()
    return sign == expected_sign

# 示例使用
url = "https://example.com/resource"
secret_key = "your_secret_key"
expire_time = 3600  # 1小时

token = generate_auth_token(url, secret_key, expire_time)
print(f"Generated Token: {token}")

is_valid = verify_auth_token(token)
print(f"Token is valid: {is_valid}")