Cryptography is about scrambling data so that it looks like babble to anyone except those who know the trick to decoding it. Almost anything in the world can be hidden from sight and revealed again. The magician David Copperfield has made his living from hiding enormous things from plain view — like elephants and the Statue of Liberty — and then magically revealing them again. Any magician will tell you that in order to make things disappear and appear again, you have to have a plan of action — a formula or recipe — to make the magic work.(...)
Go with the rhythm...One big problem with ancient ciphers is that they were easily figured out, and the secret messages weren’t secret for very long...
People are really confused about Public Key Infrastructure, also known as PKI. They focus on the words “public” and “key” but they forget to include the last word, “infrastructure.” That’s the important part. Infrastructure has been used most commonly to refer to the roads, bridges, rail lines, electric power cables, water lines, and similar public works that are required for an industrial economy to function. In a network, an infrastructure is the servers, desktop computers, operating systems, application software, routers, hubs, network operating systems—the interconnectivity between all the machines. It’s what allows the Internet to work....
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