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+RSA Data Security holds software patents on the RSA and RC5 algorithms.
+If there ciphers are used used inside the USA (and Japan?), you must contact
+RSA Data Security for licencing conditions. Their web page is
+http://www.rsa.com
+
+RC4 is a trademark of RSA Data Security, so use of this label should perhaps
+only me used with RSA Data Security's permission.
+
+The IDEA algorithm is patented by Ascom in Austria, France, Germany,
+Italy, Japan, Netherlands, Spain, Sweden, Switzerland, UK and the USA.
+They should be contacted if that algorithm is to be used, their web page is
+http://www.ascom.ch
+