The secure shell protocol is used to connect to hosts in a way that is safe against spoofing and tempering with the connection from third parties. If you reside in such a country, this means that downloading and using ZOC's SSH feature is illegal. The RSA algorithm was patented in the U.S. by a company called RSA Data Security . However, to the best of our knowledge the patent in year 2000, so this should be a non issue now. In any case, because algorighms can not be patented in Germany and most of Europe the use of RSA and hence SSH inside Germany and in other countries of the European Community is legal anyway.
IDEA encryption is free for non commercial use.
Commercial users need to obtain a end-user license from Ascom. The U.S. government considers strong encryption a military technology and prohibits export of such. An export license can be obtained for less powerful encryption methods but the methods used in SSH are definitely covered by U.S. export laws. But, once it is inside the U.S. it is illegal to export it from the U.S. to other countries , which includes putting it on an internationally accessible ftp server, sending it by mail or email or any other means of transportation. More information about this topic can be found on RSA Data Security's web pages.