Re: ``Better DES challenge'' solved by John Gilmore and ``Deep Crack''

Paulo Barreto (pbarreto@nw.com.br)
Fri, 17 Jul 1998 20:24:01 -0300

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At 02:57 1998.07.17 -0400, Matt Blaze wrote:

>I am pleased to announce that the prize has been claimed. On July 2,
>1998, John Gilmore, of the Electronic Frontier Foundation, informed me
>that:
>
> With a (parity-padded) key of 0E 32 92 32 EA 6D 0D 73, the plaintext
> of 8787878787878787 becomes the ciphertext 0000000000000000
[snip]
>Note that although the prize has been claimed and the contest is now
>officially closed, there may be other solution keys (in fact, we'd
>expect to find about 255 more, if DES emulates a random permutation).

Well, in fact we already have two solutions here, due to the DES
complementation property ;-)

Paulo Barreto.

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