[cryptography] ECDSA - patent free?

Paul Hoffman paul.hoffman at vpnc.org
Wed Nov 9 13:35:38 EST 2011

On Nov 9, 2011, at 10:22 AM, Adam Back wrote:

> Anyone have informed opinions on whether ECDSA is patent free?

Define "informed". Seriously. Do you want to hear from actual lawyers? People who have talked to lawyers? People who think they understand law?

> Any suggestions on EC capable crypto library that implements things without
> tripping over any certicom claimed optimizations?

Certicom claims patents on many things, among them optimizations. They are (IMNSHO) purposely vague on what they claim.

> (Someone pointed out to me recently that the redhat shipped openSSL is devoid
> of ECC which is kind of a nuisance!)

Sure is.

> Suite B pushed use of EC you would think would increase the interest in
> having clarity on the EC patent situation..

How could that clarity possibly be achieved? Again, this is a serious question.

--Paul Hoffman

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