- 1 year ago
Signing kernel mode driver on windows platform
Comment
1 / 1
To sign a kernel-mode driver on the Windows platform, you need to obtain a code signing certificate and use the tools provided by Microsoft to sign the driver. Here are the general steps involved:
Obtain a Code Signing Certificate:
- Purchase a code signing certificate from a trusted certificate authority (CA). Make sure the certificate is specifically issued for code signing purposes and supports kernel-mode driver signing.
- Follow the instructions provided by the CA to generate and obtain the code signing certificate.
Prepare the Driver Package:
- Package your kernel-mode driver into a driver package (INF file and associated files) using the appropriate tools provided by Microsoft, such as the Windows Driver Kit (WDK) or the Windows Driver Frameworks (WDF).
- Ensure that your driver package adheres to the driver signing requirements and guidelines specified by Microsoft.
Install the Code Signing Certificate:
- Install the code signing certificate on the machine used for signing the driver. This is typically done by double-clicking the certificate file (.pfx or .cer) and following the certificate installation wizard.
Sign the Driver:
- Use the
signtool
utility provided by Microsoft to sign the driver package. Thesigntool
command-line tool is included in the Windows SDK or Visual Studio. - Open a command prompt with administrative privileges.
- Navigate to the directory containing the driver package (INF file and associated files).
- Use the following
signtool
command to sign the driver:bashsigntool sign /v /s <certificate_store> /n <certificate_subject_name> /t http://timestamp.digicert.com <driver_package.inf>
- Replace
<certificate_store>
with the name of the certificate store where the code signing certificate is installed (e.g.,"My"
for the current user or"LocalMachine\My"
for all users). - Replace
<certificate_subject_name>
with the subject name or thumbprint of the code signing certificate. - Replace
<driver_package.inf>
with the name of your driver package's INF file.
- Replace
- Use the
Timestamp the Driver Signature:
- Add a timestamp to the driver signature to ensure its validity beyond the certificate's expiration date. The
/t
option in thesigntool
command above specifies the timestamp server. - It's recommended to use a reputable timestamp server such as
http://timestamp.digicert.com
orhttp://timestamp.comodoca.com
.
- Add a timestamp to the driver signature to ensure its validity beyond the certificate's expiration date. The
Verify the Driver Signature:
- After signing the driver, use the
signtool
utility again with the/verify
option to verify the driver's signature:bashsigntool verify /v /kp <driver_package.inf>
- Replace
<driver_package.inf>
with the name of your driver package's INF file.
- Replace
- After signing the driver, use the
By following these steps and signing your kernel-mode driver with a trusted code signing certificate, you can ensure that the driver is properly signed and can be installed on Windows systems without triggering driver signing enforcement.