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diff --git a/README.PATENTS b/README.PATENTS index 1e09003..535c825 100644 --- a/README.PATENTS +++ b/README.PATENTS
@@ -1,10 +1,18 @@ +Various companies hold various patents for various algorithms in +various locations around the world. YOU are responsible for ensuring +that your use of any algorithms is legel by checking if there are any +patents in your country. The file contains some of the patents that we +know about or are rumoured to exist. This is not a definitive list. + +---------------------------------------------------------------------- + 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 +If their 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. +only be 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.