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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.
+
+The IDEA algorithm is patented by XXXX and they should be contacted if that
+algorithm is to be used.
+
+RC4 is a trademark of RSA Data Security, so use of this label should perhaps
+only me used with RSA Data Security's permission.