Cryptography is no mean field. After all, the science was invented by humans for the purpose of concealing information from other humans. That means that the best cryptographers have to be blindingly smart, with a mastery of mathematics but also a firm grasp of human psychology and, these days, fields such as computer science.

Paul Kocher, president and chief scientist of Cryptography Research is a good example of the breed. A cryptography superstar, Kocher is credited with helping discover two different techniques for defeating certain kinds of encryption algorithms. He

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