%%% provide the typical uuid namespaces
-define(UUID_NAMESPACE_DNS,  <<16#6ba7b8109dad11d180b400c04fd430c8:128>>).
-define(UUID_NAMESPACE_URL,  <<16#6ba7b8119dad11d180b400c04fd430c8:128>>).
-define(UUID_NAMESPACE_OID,  <<16#6ba7b8129dad11d180b400c04fd430c8:128>>).
-define(UUID_NAMESPACE_X500, <<16#6ba7b8149dad11d180b400c04fd430c8:128>>).