Cryptology in the U.S.—Then and Now

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Presentation transcript:

Cryptology in the U.S.—Then and Now Meghan Kimber

Target Population and Objective This V.F.T. is intended for high school or college level math students interested in Cryptology Students taking this V.F.T. should be able to: Discuss what Cryptology is about Talk about various tools or methods used in Cryptology Note a few times in history that cryptology has been used and whether or not that was successful

Cryptology is… the study of mathematical, linguistic, and other coding patterns and histories The word Cryptology comes from the Greek word kryptos, which means hidden and logos, which means word. It is the branch of science that deals with secret communications.

Codes Are Used to… Encrypt personal information as it travels through the WWW. For example, bank account information, social security number or pin numbers. Aid branches of the military and government in keeping secret matters secret. Send a friend a secret message.

Early Cryptology Travel to this website to read about early cryptology. Answer the following questions: 1) Who invented the first substitution cipher? 2) Who established the first military cryptography? 3) What did the English monk Roger Bacon do?

Tools that Code and Decode

Cryptology Used in U.S. History Visit the National Cryptologic Museum exhibits and look around! 1) Who were the Code Talkers? Did they have a successful program? 2) How did the German Enigma work? Was it successful? 3) How is cryptography involved with postal metering?

Sending Secret Messages to Friends Check out this website where you can send a coded message to a friend. 1) Send a coded message to a friend 2) Make your own code by assigning a number to a letter in the alphabet. Use the numbers to write your message and give your friend the code to crack it.

Sources Definition of Cryptology The Science of Secret Codes and Ciphers Published Works on Cryptology Early Cryptology National Cryptologic Museum Mike’s Math Club Secret Code The Problem Site (check of the different codes and try a game)