internal static bool CheckForWin2KCrypto()
{
// cut-and-paste from Environment.OSVersion so we avoid the demand for EnvironmentPermission.
// there's a side effect here that you can do a timing attack on how long it takes to spin up this
// function and figure out whether you're pre- or post-Win2K crypto. But you could do that
// anyway by looking at what CSPs are on the system.
Microsoft.Win32.Win32Native.OSVERSIONINFO osvi = new Microsoft.Win32.Win32Native.OSVERSIONINFO();
bool r = Win32Native.GetVersionEx(osvi);
if (!r)
{
return(false);
}
if (osvi.PlatformId == Win32Native.VER_PLATFORM_WIN32_NT)
{
return(osvi.MajorVersion >= 5);
}
return(false);
}
internal static extern bool GetVersion(Microsoft.Win32.Win32Native.OSVERSIONINFO osVer);
