// call WinTrust.WinVerifyTrust() to check embedded file signature
public static bool VerifyEmbeddedSignature(string fileName)
{
WinTrustFileInfo wtfi = null;
WinTrustData wtd = null;
try
{
wtfi = new WinTrustFileInfo(fileName);
wtd = new WinTrustData(wtfi);
Guid guidAction = new Guid(WINTRUST_ACTION_GENERIC_VERIFY_V2);
WinVerifyTrustResult result = WinVerifyTrust(INVALID_HANDLE_VALUE, guidAction, wtd);
return(result == WinVerifyTrustResult.Success);
}
finally
{
wtfi?.Dispose();
wtd?.Dispose();
}
}
private static extern WinVerifyTrustResult WinVerifyTrust(
[In] IntPtr hwnd,
[In][MarshalAs(UnmanagedType.LPStruct)] Guid pgActionID,
[In] WinTrustData pWVTData
);