Question: In the text we computed that a cipher-breaking machine with a billion processors that could analyze a key in 1 picosecond would take only 1010

In the text we computed that a cipher-breaking machine with a billion processors that could analyze a key in 1 picosecond would take only 1010 years to break the 128-bit version of AES. However, current machines might have 1024 processors and take 1 msec to analyze a key, so we need a factor of 1015 improvement in performance just to obtain the AES-breaking machine. If Moore's law (computing power doubles every 18 months) continues to hold, how many years will it take to even build the machine?

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