What changed in the driver signature requirements for Windows 8?

c++ installation driver digital-signature windows-8
jeffm picture jeffm · Mar 9, 2012 · Viewed 9k times · Source

I've got a passthrough NDIS intermediate driver, consisting of two .inf files (one standard and one miniport) and a .sys file. Because of the Windows 7 driver signing requirements, I had to get a code-signing certificate and sign the .sys file in order for the driver to install on a 64-bit system. This works fine, and I have many successful Windows 7 installs.

However, the same installer fails on the Windows 8 Consumer Preview (64-bit). If I boot with Windows Signature Enforcement turned off, it installs correctly, so it's definitely a signature issue. What new requirements were added between Windows 7 & Windows 8 that I need to follow in order to get my driver to install?

Answer

Roger Stewart picture Roger Stewart · Mar 9, 2012

Regenerate your cat file(s) so that they comply with the signing requirements for the new Window OS.

For example, in my build script I had to add 8_X86,8_X64 to my inf2cat command:

inf2cat /driver:"%CD%" /os:XP_X86,XP_X64,Vista_X86,Vista_X64,7_X86,7_X64,8_X86,8_X64

For Windows 8.1, you will need the inf2cat included in Windows Driver Kit (WDK) 8.1 and depending on your target(s) add 6_3_X64, 6_3_X86, or 6_3_ARM to the /os:WindowsVersionList.

Reference, Inf2Cat

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