
The keys must be entered in a certain format for the applet to work. The following gives examples of each key type: Caeser: key = "2" (letters are shifted two letters to the right) Scytale: key = "7" (a rod whose circumference is 7 letters long has been used) Affine: key = "5x+22" (the linear function f(x)=5x+22 (mod 26) has been used) Vigenere: key = "MYKEYWORD" (the traditional keyword); If you are trying to crack a Vigenere Cipher without the keyword, you might find the "Do Frequency Analysis" and the "Display only every nth value starting at position k" buttons very useful... Substitution: key = "CBADEFGHIJKLMNOPQRSTUVWXZY" (swaps A's and C's, also swaps Y's and Z's) Hill: key = "5,1,11,22" (corresponds to the encrypting matrix whose first column contains 5, 1 and whose second column contains 11, 22) Playfair: key = "MYKEYWORD" (the traditional keyword) Below are links to some encrypted messages you might explore: : 