[RC5] RSA Secret-Key Challenge Termination

Scott Dodson sdodson at sdodson.com
Mon May 21 20:23:11 EDT 2007

Joseph Kaye wrote:
> Jim C. Nasby wrote:
>> On Mon, May 21, 2007 at 08:53:35AM -0400, Greg Lobring wrote:
>>> Personally I don't foresee myself continuing to crunch RC5-72 keys with the
>>> discontinuation of the challenge by RSA. In fact, I've already disabled the
>>> RC5-72 project on all my clients, they are doing only OGR work now. As it
>>> stands with yesterday's stats, it could be well over 1,000 years before
>>> RC5-72 is done. Even with progressing technology, I don't see that
>>> diminishing too much in my lifetime. I've put over 1,630 days (over 4 years)
>>> into the project, and seeing it at only 0.415% complete is a little
>>> depressing!
>> Personally, I think it would be a shame to officially close RC5-72
>> without at least taking these new cores for a spin.
> Absolutely! Even if only so that the developers of the core could see 
> the fruits of their labor, and see "what could have been". :)  Another 
> question - would we be able to confirm if the key was found, or can only 
> the RSA confirm this?
Only they'd be able to confirm it for sure, however, assuming that 
there's only one key that produces coherent verbage it could be assumed 
we've found it.


More information about the rc5 mailing list