wooledge at kellnet.com
Sat Dec 4 12:13:57 EST 1999
Travis Kelley (travis at thekeyboard.com) wrote:
> Here's my idea....As I understand it there is a known key in the rc5
> contest....(something that the correct answer is guaranteed to contain).
> I also think that every key works out to some text message whether or
> not it is readable or not. Why not display those text messages to the
> user or at least like every 10th one so they can ohh and ahh if they
> get one that is close to the known text...just a thought
Nice idea, but there's one problem. The client doesn't actually decrypt
the *whole* message with each key -- it just checks the first 4 or 8 bytes
of the message (I forget which). This generates a few 'false positives',
but each match is checked by the dnet staff to see whether it decrypts
the *whole* message.
So, I suppose you could display the first 4 bytes of, say, every *1000th*
key (not 10th, GACK!) -- but that's probably not very interesting to
the user, since half of the bytes will be high-ASCII characters anyway.
Greg Wooledge | "Truth belongs to everybody."
wooledge at kellnet.com | Red Hot Chili Peppers
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 240 bytes
Desc: not available
Url : http://lists.distributed.net/pipermail/rc5/attachments/19991204/464ad87a/attachment-0001.bin
More information about the rc5