Discussion:  Roundtable 
Topic:  Caesar Cipher Tool 
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Subject:  Ciphering 
Author:  Craig Russell 
Date:  Feb 4 2004 
coding is unique. Thus, the only possible multiplier "keys" are
3,5,7,9,11,15,17,19,21,23, and 25. You might try an exercise: add three symbols
to the alphabet (a space, period, and comma are reasonable choices). Then you
have 29 symbols, and 28 potential keys!
By the way, all Caesar ciphers are examples of substitution ciphers, the type of
"code" used in the "cryptoquote" puzzles published in many newspapers daily.
 
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