It is
@url{https://www.gnu.org/philosophy/pragmatic.html, copylefted}
@url{https://www.gnu.org/philosophy/free-sw.html, free software}:
-licenced under @url{https://www.gnu.org/licenses/gpl-3.0.html, GPLv3+}.
+licenced under @url{https://www.gnu.org/licenses/gpl-3.0.html, GPLv3}.
You can read about GOST algorithms @url{http://gost.cypherpunks.ru/, more}.
Currently supported algorithms are: