decode_asn1.py 文件源码

def _decode_policy_constraints(backend, pc):
    pc = backend._ffi.cast("POLICY_CONSTRAINTS *", pc)
    pc = backend._ffi.gc(pc, backend._lib.POLICY_CONSTRAINTS_free)

    require_explicit_policy = _asn1_integer_to_int_or_none(
        backend, pc.requireExplicitPolicy
    )
    inhibit_policy_mapping = _asn1_integer_to_int_or_none(
        backend, pc.inhibitPolicyMapping
    )

    return x509.PolicyConstraints(
        require_explicit_policy, inhibit_policy_mapping
    )