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Test-Signing a Driver File

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Use SignTool to embed a signature in a driver file.

Using a MakeCert Test Certificate or a Commercial Test Certificate to Embed a Test Signature in a Driver File

Use the following SignTool command to embed a signature in a driver file by using a MakeCert test certificate or a commercial test certificate.

SignTool sign /v /s TestCertStoreName /n TestCertName /t http://timestamp.digicert.com DriverFileName.sys

Where:

  • The sign command configures SignTool to embed a signature in the driver file DriverFileName.sys.

  • The /v verbose option configures SignTool to print execution and warning messages.

  • The /s TestCertStoreName option supplies the name of the test certificate store that contains the test certificate named TestCertName.

  • The /n TestCertName option supplies the name of the test certificate that is installed in the certificate store named TestCertStoreName. The test certificate can be either a MakeCert test certificate or a commercial test certificate.

  • The /t http://timestamp.digicert.com option supplies the URL to the publicly-available time-stamp server that DigiCert provides.

  • DriverFileName.sys is the name of the driver file.

The following command shows how to use SignTool to test-sign a driver file. This example embeds a signature in Toaster.sys, which is in the amd64 subdirectory under the directory in which the command is run. The test certificate is named "contoso.com(test)" and it is installed in the certificate store named "PrivateCertStore."

SignTool sign /v /s PrivateCertStore /n contoso.com(test) /t http://timestamp.digicert.com amd64\toaster.sys

Using an Enterprise CA Test Certificate to Embed a Test Signature in a Driver File

The following SignTool command assumes that an Enterprise CA issues the test certificate that you use to test-sign a driver package. If the Enterprise CA test certificate is the only test certificate that is present in your certificate stores, you can use the following command where you specify only the /a option and the name of the driver file. In this situation, SignTool will locate and use your Enterprise CA test certificate by default.

If you have created or obtained other test certificates in addition to an Enterprise CA test certificate, you must use the SignTool options /s and /n to specify the name of the test certificate store and the name of the test certificate that is installed in the test certificate store.

SignTool sign /v /a /t http://timestamp.digicert.com DriverFileName.sys