[wdmaudiodev] Re: Filter drivers and driver signing

  • From: "Frank Yerrace" <frankye@xxxxxxxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Fri, 5 Nov 2004 13:35:44 -0800

Jeff, I'm curious what your filter driver does that would benefit any
existing audio driver rather than some specific driver/device. Could you
describe what it does? I am interested in case there is something we (on
the audio devices team at Microsoft) should consider more carefully in
future releases of Windows.

 

Frank Yerrace

Microsoft Corporation

 

This posting is provided "AS IS" with no warranties, and confers no
rights.

 

________________________________

From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Tim Roberts
Sent: Friday, November 05, 2004 1:11 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Filter drivers and driver signing

 

Jeff Claar wrote: 

Hi everyone, 

I have an audio filter driver that can be installed over any existing
audio driver. Is it possible to get this filter driver signed through
the WHQL process by itself, or can it only be signed as part of a
complete driver installation package?


The only thing you can send through WHQL are drivers for a specific
device.  You could get your filter signed as part of a driver stack for
a specific device, but for a "generic" filter, there's nothing to sign.
You don't have an INF file or a CAT file, so there no place to put a
signature.  And in order for someone to use your filter, they have to
modify their own INF file, which invalidates their signature.



-- 
- Tim Roberts, timr@xxxxxxxxx
  Providenza & Boekelheide, Inc.

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