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Explaining the elegant and simple math that opened the door for modern online cryptography. RSA defends its users with a math problem that frustrated mathematicians for centuries -- when they tried to solve it for fun. Now major hacking organizations attack the same problem for profit, big profit -- how long will RSA survive? Edward Snowden claims that the NSA did solve the RSA challenge to factor large numbers. Who else? Get the math here, and think for yourself!