public static bool VerifyFile(string fileName)
{
using (var wtfi = new WinTrustFileInfo(fileName))
using (var wtd = new WinTrustData(wtfi))
{
return(WinVerifyTrust(INVALID_HANDLE, WINTRUST_ACTION_GENERIC_VERIFY_V2, wtd) == WinVerifyTrustResult.Success);
}
}
// constructor for silent WinTrustDataChoice.File check
public WinTrustData(WinTrustFileInfo _fileInfo)
{
// On Win7SP1+, don't allow MD2 or MD4 signatures
if ((Environment.OSVersion.Version.Major > 6) ||
((Environment.OSVersion.Version.Major == 6) && (Environment.OSVersion.Version.Minor > 1)) ||
((Environment.OSVersion.Version.Major == 6) && (Environment.OSVersion.Version.Minor == 1) && !string.IsNullOrEmpty(Environment.OSVersion.ServicePack)))
{
ProvFlags |= WinTrustDataProvFlags.DisableMD2andMD4;
}
WinTrustFileInfo wtfiData = _fileInfo;
FileInfoPtr = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(WinTrustFileInfo)));
Marshal.StructureToPtr(wtfiData, FileInfoPtr, false);
}
