Bitcoin: a little help here please

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5. Privacy is temporary

https://nsa.gov1.info/utah-data-center/

Our Ultimate Target: 256-bit AES

The Advanced Encryption Standard (AES) algorithm is used worldwide to encrypt electronic data on hard drives, email systems, and web browsers. Computer experts have estimated it would take longer than the age of the universe to break the code using a trial-and-error brute force attack with today's computing technology.

In 2004, the NSA launched a plan to use the Multiprogram Research Facility in Oak Ridge, Tennessee to build a classified supercomputer designed specifically for cryptanalysis targeting the AES algorithm. Our classified NSA Oak Ridge facility made a stunning breakthrough that is leading us on a path towards building the first exaflop machine (1 quintillion instructions per second) by 2018. Since the capability to break the AES-256 encryption key within an actionable time period may still be decades away, our Utah facility is sized to store all encrypted (and thereby suspicious) data for safekeeping.