ECDH missing from Openssl-0.9.8a-5.2 in FC5

[D. Hugh Redelmeier]

| From: Richard Barnes <rbarnes at bbn.com>

| ... all the openssl headers seem to be
| present *except* the elliptic curve ones (ec.h and ecdh.h). Can anyone give me
| an idea of why this is?

Pure guess: Certicom asserts that it has patents on this stuff.

I am not a cryptographer but I talked to Hilarie Orman and others about 
some elliptical curve stuff at an IETF meeting.  There was a disagreement 
about whether Certicom patents left enough gaps to allow useful open 
source code.

Here's a sample message that I got via google:
http://www.sandelman.ottawa.on.ca/ipsec/1998/07/msg00119.html