[145670] in cryptography@c2.net mail archive
Re: 2048-bit RSA keys
daemon@ATHENA.MIT.EDU (Paul Hoffman)
Mon Aug 16 16:52:54 2010
In-Reply-To: <4C6895D3.2010207@partow.net>
Date: Mon, 16 Aug 2010 12:42:41 -0700
To: Arash Partow <arash@partow.net>, cryptography@metzdowd.com
From: Paul Hoffman <paul.hoffman@vpnc.org>
At 11:35 AM +1000 8/16/10, Arash Partow wrote:
>Paul Hoffman wrote:
>>You are under the wrong impression, unless you are reading vastly different crypto literature than the rest of us are. RSA-1024 *might* be possible to break in public at some point in the next decade, and RSA-2048 is a few orders of magnitude harder than that.
>>
>
>Just out of curiosity, assuming the optimal use of today's best of breed factoring algorithms - will there be enough energy in our solar system to factorize a 2048-bit RSA integer?
We have no idea. The methods used to factor number continue to slowly get better, and it has been quite a while since there was a single large improvement. That could mean that there are no more improvements to be made, or that some smart cryptographer who isn't focused on the SHA-3 competition is about to make another big improvement, or something in between.
--Paul Hoffman, Director
--VPN Consortium
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