Re: Just how does it know?

Benjamin L. Peterson (
Thu, 1 May 1997 07:48:35 -0500 (EST)

On Thu, 1 May 1997, Shaun Stuart wrote:
>I do have one question about this effort in general - How does the
>program know when the correct key has been found? Presumably, if someone
>were trying keys by hand, they'd look at the output and, if it was
>unreadable, they'd know it wasn't the right key. But how does a program

For each contest, the unknown plaintext message is preceded by
three known blocks of text that contain the 24-character phrase
"The unknown message is: ".
If a key encrypts the first 24 characters correctly, I imagine it will be
the right key.


/* Benjamin Peterson   Computer Science Senior,  University of Notre Dame */
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