Prepare an exhibit on cryptography. Include devices or charts for writing and deciphering codes, coded messages, and illustrations of famous codes from history. For example, codes are found in literature in Before the Curtain Falls, by J. Rives … See the whole entry
Video:
Cryptography (time: 3:02)
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This site makes a transition from the modular arithmetic (of the last section) to writing secret codes (of this section). A Caesar cipher is a secret code in which each letter in the plain text is replaced by a letter … See the whole entry
Cryptography is the art of writing or deciphering messages in code. This is an applied section which uses essential ideas … See the whole entry