Lavarand
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Lavarand™ is Silicon Graphics' name for its method of generating pseudo-random numbers out of the patterns made by the floating material in lava lamps.
It is covered under US patent #5,732,138 (http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,732,138.WKU.&OS=PN/5,732,138&RS=PN/5,732,138), titled "Method for seeding a pseudo-random number generator with a cryptographic hash of a digitization of a chaotic system."
External links
- LavaRnd (http://www.lavarnd.org)