[18487] in cryptography@c2.net mail archive
RE: ECC patents?
daemon@ATHENA.MIT.EDU (James A. Donald)
Sat Sep 17 11:56:34 2005
X-Original-To: cryptography@metzdowd.com
X-Original-To: cryptography@metzdowd.com
From: "James A. Donald" <jamesd@echeque.com>
To: <cryptography@metzdowd.com>
Date: Fri, 16 Sep 2005 20:52:52 -0700
In-reply-to: <9DC3EBEFB87A97498A7D25F130DE27E414BD3F@ohthree.jjj-i.com>
--
Whyte, William" <WWhyte@ntru.com>
> $25MM figure:
>
> http://lists.jammed.com/ISN/2003/10/0097.html
I stand corrected.
However as was pointed out previously:
: : Further, the license would be limited to only
: : prime field curves where the prime was
: : greater than 2255. On the NIST list of curves
: : 3 out of the 15 fit this field of use: the
: : prime field curves with primes of 256 bits,
: : 384 bits and 521 bits.
Of the NIST list of fifteen, nine are 256 bits or
longer.
Presumably, if NSA thought certicom had a case, they
would have licensed at least the other six NIST curves
as well, and most likely the other twelve.
The three curves that are licensed look different from
the other twelve, though I have no idea of the
significance of this, if any.
--digsig
James A. Donald
6YeGpsZR+nOTh/cGwvITnSR3TdzclVpR0+pr3YYQdkG
ZKrN4sA2qyTNIC90h3U/8Er848IPFGfUOQyBxm8h
4xlZJBIqZwgUkOyqgxTzTBcauENSjU46x6oDgn2X4
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