[Cryptography] paragraph with expected frequencies
Ray Dillinger
bear at sonic.net
Sat Dec 23 16:38:07 EST 2017
Actually the longer it is the easier it gets, because the "law of large
numbers" in statistics makes the frequency counts more accurate.
An alphabetic substitution is a very simple program; one you've probably
already written to produce the puzzle.
Letting your daughter edit the key, run it, see the changed message, and
edit the key again, interactively, would be fun, a rapid way for her to
get a feel for substitution ciphers, and you could let her look at a
whole page of text while she does it.
Bear
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