If a woman posted that on her Facebook page it would worry MIT-trained cryptographer Mark Herschberg.

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It was founded by a world-renowned cryptographer and a former U.S. Navy SEAL sniper and communications security expert.

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The movie stars Tom Hanks as Robert Langdon, an American professor who, partnered with a young French cryptographer (Audrey Tautou), untangles a knot of clues.

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It turned out he was a world-famous cryptographer, Dr. Whitfield Diffie, a pioneer of public-key encryption that to this day drives the CIA, FBI and others quite nuts.

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How your toaster or washing machine or new car will stay on top of emerging security concerns years after initial production is a very real concern, one that Kocher, a respected cryptographer, has given some thought.

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Tom Berson, a California cryptographer hired by Skype in 2005 to evaluate its security, says he met the programmers, who told him they grew up when Estonia was part of the Soviet Union and had the perils of "wiretapping in mind" when creating Skype.

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