Re: Chaumian blinding in ECC and ElGamal?

Enzo Michelangeli (em@who.net)
Tue, 9 Feb 1999 08:04:32 +0800

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-----Original Message-----
From: Mike Rosing <eresrch@msn.fullfeed.com>
Date: Tuesday, February 09, 1999 12:52 AM

>
>On Mon, 8 Feb 1999, Lucky Green wrote:
>
[...]
>> Furthermore, is anybody on this list aware of a royalty and patent free
ECC
>> library?
>
>Yup! Check out http://www.msn.fullfeed.com/~eresrch for code and
>http://www.manning.com/Rosing for documentation. It's all free and clear.
>(but the book costs US$48 :-)

Hold on! That settles the copyright's issue for the library, but not the
patent's for the underlying algorithms. As you can see at
http://grouper.ieee.org/groups/1363/patents.html , there are claims on
several areas of ECC cryptography. Most of them come from Certicom
(http://grouper.ieee.org/groups/1363/letters/Certicom.txt), but apparently
also R3 Security Engineering has a patent and a patent application covering
the Nyberg-Rueppel digital signature key agreement method.

Cheers --

Enzo

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