static void unregisterCNG(IEnumerable <Oid2> oid)
{
if (oid.Select(oid2 => new Wincrypt.CRYPT_OID_INFO {
cbSize = Marshal.SizeOf(typeof(Wincrypt.CRYPT_OID_INFO)),
pszOID = oid2.Value,
pwszName = oid2.FriendlyName,
dwGroupId = (Int32)oid2.OidGroup
}).Any(oidinfo => !Crypt32.CryptUnregisterOIDInfo(oidinfo)))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}