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A cryptography method used by the Romans where letters were substituted for other letters by shifting them a certain amount down the alphabet. -
A form of the Caesar Cipher that uses a square where each row shifts the alphabet by one letter. A key word is used to determine how the message will be encoded. -
A cryptography method used by Freemasons where symbols and dots were used to represent letters. -
An expansion on the Caesar cipher where instead of just shifting the letters, multiplication is involved. The formula is y = [a*x+b] mod 26.
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