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Can we find the digital signature of the user-mode app inside our kernel mode WDM dispatch function, and check it to make sure the executable file of the user-mode process has our own certificate/signature or not? If so, how can i do this in kernel mode inside my dispatch function? for example inside the handler for irp_mj_device_control, how can i check the digital signature of the user mode app that is sending me the ICOTL?
Therefore make sure that only a executable with our own digital signature can communicate with us.
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