/WINMDKEYFILE (Specify winmd Key File)
Specifies a key or a key pair to sign a Windows Runtime Metadata (.winmd) file.
/WINMDKEYFILE:filename
Remarks
Resembles the /KEYFILE linker option that is applied to a .winmd file.
To set this linker option in the Visual Studio development environment
Open the project's Property Pages dialog box. For details, see Modifying Project Properties.
Select the Linker folder.
Select the Windows Metadata property page.
In the Windows Metadata Key File box, enter the file location.