Re: Elliptic Curve Digital Signature Algorithm (ECDSA) Cryptographic Service Provider (CSP)

arik_at_codebuildingblocks.com
Date: 11/24/05 

Date: 24 Nov 2005 14:30:41 -0800

Hi,

I am not a lawyer. I have only done a basic search.
The result of my check showed that there are no patents on GF(2^m) with
a polynomial basis (http://www.cryptoman.com/elliptic.htm). Most of the
patents are for efficient implementations and not on the cryptosystem
itself (http://www.rsasecurity.com/rsalabs/node.asp?id=2325).
This is not a legal opinion and I am not licensing the cryptosystem. I
am offering to license the implementation only.
Certicom does have an implementation of ECC algorithms but I don't
know of any Cryptographic Service Provider for MS Cryptography API. If
you have any more information I will love to hear it. Thanks for your
comment.

Arik Yavilevich.
CodeBuildingBlocks.

Valery Pryamikov wrote:
> About licensing out of your csp - did you check that you didn't violate any
> of EC patents hold by Certicom? http://www.certicom.com/index.php they are
> currently holding more than 300 patents with most of them related to every
> aspect of Elliptic Curve Cryptography.
> and if I remember it correctly - they also have commerical ecc csp...
> (note - I'm not associated with certicom in anyway).
>
> -Valery.
> http://www.harper.no/valery
>
> <arik@codebuildingblocks.com> wrote in message
> news:1132523732.372224.96280@f14g2000cwb.googlegroups.com...
> > Hello,
> >
> > We have implemented an ECDSA CSP based on Crypto++ Library 5.2.3.
> > It supports a subset of the standard curves with key sizes varying from
> > 113 to 571 bits.
> > ECDSA has the advantage of shorter keys (ten folds) than RSA
> > signatures.
> > We are using it in our applications and are interested in licensing it
> > to other companies or individuals.
> > Please contact me for further details.
> >
> > Thank you,
> > Arik Yavilevich.
> > CodeBuildingBlocks.
> >

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