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How to implement OCSP stapling mock in Python

Simulate OCSP stapling with a caching mechanism that mocks certificate status lookups for TLS handshake validation.

import hashlib
import time

class OCSPStapler:
    def __init__(self, cert_serial: str, issuer_hash: str):
        self.cert_serial = cert_serial
        self.issuer_hash = issuer_hash
        self.cache = {}

    def _mock_query_ocsp(self, serial: str) -> dict:
        """Simulate OCSP responder lookup."""
        di…

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