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Auth & security at scale

OAuth2, JWT, IAM patterns, secrets rotation, and least-privilege service auth.

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Auth & security at scale medium

Mock client credentials machine auth in Python

This code simulates the OAuth2 client-credentials flow for service-to-service calls, generating a mock bearer token with expiry and caching, plus a revoke method, using only the standard library.

oauth2 auth mock
Python 
import time
import hashlib
import secrets

class MachineAuth:
    """Mock client-credentials machine auth for service-to-service calls."""
    
    def __init__(self, client_id, client_secret):
        self.client_id = client_id
        self.client_secret = client_secret
        self._token = None
        self._expire…
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