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The Alice and Bob After Dinner Speech (1984)
A humorous speech about coding theory.
Over the years Alice and Bob have tried to defraud insurance companies, they've played poker for high stakes by mail, and they've exchanged secret messages over tapped telephones. Then there are those based on names of countries:- Africa, Brazil, Chile, Denmark, England, France, Greenland, Holland, India, Japan, Khazakistan, Lithuania, Morocco, Niger, Oman, Papua, Qatar, Russia, Spain, Tanzania, Uruguay, Venezuela, Westphalia, Yemen, Xanadu, Zambia. Some correspondence from Julius Caesar to Cicero in this complex cipher have finally been deciphered by GCHQ and will be published in the June edition of Cryptologia.
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