You could do worse than to confuse the meanings of "code" and "cipher"—even cryptographers sometime use the terms as though they had the same meaning. There is, however, a definite distinction between ...

The theory that statesman and scientist Francis Bacon was the ghostwriter behind Shakespeare, and embedded the Bard's plays with ciphers, had a major influence on modern cryptography. William F.

In Part I, you broke a simple cipher. Now try creating a more complex cipher. Cut out the NOVA Decoder Ring and NOVA Cipher Code Ring and the window marked INDEX. You are now going to put this simple ...