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microsoft / Windows-driver-samples

This repo contains driver samples prepared for use with Microsoft Visual Studio and the Windows Driver Kit (WDK). It contains both Universal Windows Driver and desktop-only driver samples.
Microsoft Public License
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Does one need a "Certificate" as well to build and use APO (Audio Processing Objects)? #1242

Open karl-police opened 3 days ago

karl-police commented 3 days ago

I heard that if you want to create a driver e.g. test.sys and use it without restriction, it needs to be signed. I know that one can build driver and run in test mode, but that doesn't speak for me as a non-profit thing at all.

 

But what about APO? These COM things or whatever it is. Do custom APO also have to be signed or not?

Can someone please tell me?

v-junyli commented 1 day ago

@microsoft/windowsaudio can you please take a look

mvaneerde commented 1 day ago

Audio processing objects load in audiodg.exe which runs as a child process of the audiosrv service in session 0, and therefore need to be signed. If you're installing on a test system, test-signing is okay. If you're installing a production system they need to be production-signed; Microsoft will production-sign your driver for you if you submit it to Hardware Dev Center.

Test instructions here: https://github.com/microsoft/Windows-driver-samples/tree/main/audio/sysvad

Submission to Hardware Dev Center instructions here: https://learn.microsoft.com/en-us/windows-hardware/drivers/dashboard/hardware-submission-create

More on signing drivers: https://learn.microsoft.com/en-us/windows-hardware/drivers/develop/signing-a-driver