Re: Are all parts of ECC royalty free?

From: Roger Schlafly (rogersc_at_mindspring.com)
Date: 11/26/03 

Date: Wed, 26 Nov 2003 19:50:30 GMT

"Jon Malm" <sc@imalm.com> wrote:
> Just out of curiousity, what does Certicom have patents on? What
> obscure tricks are you talking about?

The Certicom patents mainly involve elliptic curves using normal
bases over non-prime fields. Most people would rather use prime
fields, because the non-prime fields have various security problems.
Even if you want to use the non-prime fields, the polynomial bases
are more efficient than the normal bases. There is no good reason
to use what Certicom has patented.

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