Chapter 13. Cryptography
The King hath note of all they intend, By interception, which they dream not of. | ||
| --Shakespeare, Henry V | ||
Keeping Secrets
Cryptography, from the Greek word for “secret writing,” is the science of communication over untrusted communications channels. Historically, cryptography has been associated with spies, governments, and the military. It has been used in warfare for thousands of years, with some of the most famous cases, including the German Enigma machine, coming from World War II. Over the last 50 years, however, cryptography has acquired a sound mathematical and practical foundation and has moved from being a tool of military and diplomatic application to one that embraces commercial applications as ...
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