Digital Signature Calculation

NTFSD
1

I am new to device drivers. For one of my project I need to calculated digital signature in kernel mode. Is it possible to calculate digital signature in kernel mode? Thanks in advance

2

Only if you will use undocumented fips.sys or implement all required crypto yourself.

Otherwise, proxy all of this to user mode.

–
Maxim S. Shatskih
Windows DDK MVP
xxxxx@storagecraft.com
http://www.storagecraft.com

wrote in message news:xxxxx@ntfsd…
>I am new to device drivers. For one of my project I need to calculated digital signature in kernel mode. Is it possible to calculate digital signature in kernel mode? Thanks in advance
>
>

3

Depending on your private key storage requirements you may be able to use CNG via the kernel mode library. See the documentation for BCryptSignHash. In general this is best done in user mode where there are key storage providers available.

Scott

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

-----Original Message-----
From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of Maxim S. Shatskih
Sent: Monday, February 15, 2010 5:15 AM
To: Windows File Systems Devs Interest List
Subject: Re:[ntfsd] Digital Signature Calculation

Only if you will use undocumented fips.sys or implement all required crypto yourself.

Otherwise, proxy all of this to user mode.

–
Maxim S. Shatskih
Windows DDK MVP
xxxxx@storagecraft.com
http://www.storagecraft.com

wrote in message news:xxxxx@ntfsd…
>I am new to device drivers. For one of my project I need to calculated
>digital signature in kernel mode. Is it possible to calculate digital
>signature in kernel mode? Thanks in advance
>
>

—
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