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r�dZ nXej&e'�Z(de)fd��YZ*d�Z+d�Z,d�Z-d�Z.d�Z/dS(s*Tools for checking certificate revocation.i����(tdatetime(t	timedeltaN(tPIPE(tPopen(tx509(tInvalidSignature(tUnsupportedAlgorithm(tdefault_backend(thashes(t
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	cCs|j|j|j�S(s Get revoked status for a particular cert version.

        .. todo:: Make this a non-blocking call

        :param `.interfaces.RenewableCert` cert: Certificate object
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        :rtype: bool

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        :param int timeout: Timeout (in seconds) for the OCSP query

        :returns: True if revoked; False if valid or the check failed or cert is expired.
        :rtype: bool

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