[RC5] Secret-Key Challenge status

Ralph W. Reid rreid at sunset.net
Mon May 21 10:08:12 EDT 2007

With no validation of the 'results', there seems little reason to me
to continue with RC5-72.  I believe that the point has been made that
any key based encryption will eventually be broken, and will probably
become obsolete for hiding data as computing power becomes stronger
and more abundant.  Just my personal opinion ;) .

Have a great day!

On Mon, May 21, 2007 at 12:30:51AM -0500, Jeff Lawson wrote:
> Hash: SHA1
> Dear friends,
> It is with great sadness that we must announce that RSA Labs has
> decided to terminate the RSA Secret-Key Challenge, which impacts the
> RC5-72 project and all of the remaining RC5 challenges. This means
> that RSA Labs will not confirm any solutions or award any additional
> prizes, should a correct solution be found. Furthermore, we have
> received a statement indicating that they will not be disclosing the
> solutions to the unsolved challenges. More details can be found on
> http://www.rsa.com/rsalabs/node.asp?id=2100 (Note that the page should
> state that the RC5-32/12/8 solution was recovered on 14 July 2002, not
> 28 January 1997.)
> Although RSA Labs is halting their official sponsorship, there is
> still the option open to us to continue the project without their
> prize or validation. We would like to solicit your feedback regarding
> this option. Discussion is welcome on our rc5 mailing list (see
> http://lists.distributed.net/mailman/listinfo/rc5 if you are not
> already a member). In the coming days, we will provide a facility to
> allow official votes to be made.
> If the choice to discontinue the RC5-72 project is made, the official
> transition plan will be as follows: In one week's time from the
> announced decision, the distributed.net keyservers will begin
> indicating that the RC5-72 project is closed to all connecting dnetc
> clients. All results received after that time will be discarded. A
> couple of days before then, we will begin slowing down RC5 work unit
> generation to allow the network to drain. If we receive sufficient
> feedback indicating that you would like us to continue operating the
> RC5-72 project, we will continue to generate work units and the
> project will remain open.
> We intend to continue operating the OGRp2 project, and are currently
> in the development stages of additional types of projects. More
> details regarding these future projects will be announced at a later
> date. In the mean time, we encourage everyone to continue
> participating in both the RC5-72 and OGRp2 projects.
> Moo! ]:8) 
> Version: GnuPG v1.4.6 (FreeBSD)
> lBku+YUkf/L6jxfqkGitr70=

Ralph.  N6BNO.  Wisdom comes from central processing, not from I/O.
rreid at sunset.net  http://personalweb.sunset.net/~rreid
...passing through The City of Internet at the speed of light...
TAN (x) = SIN (x) / COS (x)

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