307 digit number factored

Paul Hoffman paul.hoffman at vpnc.org
Mon May 21 23:07:24 EDT 2007


FWIW, according to Arjen Lenstra, there should be a better paper than 
the physorg.com article on the eprint.iacr.org site next week, 
hopefully.

At 4:32 PM -0400 5/21/07, Victor Duchovni wrote:
>When do the Certicom patents expire?

Which ones? They have many. Using EC depends on how brave you are and 
which country you are in.

>I really don't see ever longer RSA
>keys as the answer, and the patents are I think holding back adoption...

Because I agree with the latter, I disagree with the former, at least 
for a few more years and until a few people are braver than I am.

>The other issue is that sites will need multiple certs during any
>transition from RSA to ECC, because the entire Internet won't upgrade
>overnight. I am not expecting public CAs to cooperate by charging the
>same price for two certs (RSA and ECC) for the same subject name(s),
>this also may significantly impede migration.

That's good of you not to expect it, given that zero of the major CAs 
seem to support ECC certs today, and even if they did, those certs 
would not work in IE on XP.

--Paul Hoffman, Director
--VPN Consortium

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