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Want a FIPS 140-2 RNG? Look at the universe. The cosmic background radiation bathes Earth in enough random numbers to encrypt everything forever. Using the cosmic background radiation – the "echo of the Big Bang" – as a random number generation isn't a new idea, but a couple of scientists have run the slide-rule over measurements of the CMB power spectrum and reckon it offers a random number space big enough to beat any current computer.
Not in terms of protecting messages against any current decryption possibility: the CMB's power spectrum offers a key space "too large for the encryption/decryption capacities of present computer systems". A straightforward terrestrial radio telescope, this Arxiv paper states, should be good enough to make "astrophysical entropy sources accessible on comparatively modest budgets".
http://www.theregister.co.uk/2015/11/12/big_bang_left_us_with_a_perfect_random_number_generator/
(Score: 3, Informative) by Zinho on Friday November 13 2015, @09:44PM
Radio telescope not needed; you can observe cosmic rays well enough using a USB webcam in a light-proof box. [archive.org]
Original site is now offline, but the project lives on at sourceforge. [sourceforge.net]
"Space Exploration is not endless circles in low earth orbit." -Buzz Aldrin