1. Introduction -- 2. From Julius Caesar to simple substitution -- 3. Polyalphabetic systems -- 4. Jigsaw ciphers -- 5. Two-letter ciphers -- 6. Codes -- 7. Ciphers for spies -- 8. Producing random ...
A Concord, New Hampshire, father who was banned from occupying an elementary school’s property dressed up as Julius Caesar at a school board meeting on Monday to drive his claims that a public school ...
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