True random number generator and entropy calculation device and method
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United States of America Patent
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Mar 1, 2005
Grant Date -
Feb 20, 2003
app pub date -
Aug 15, 2001
filing date -
Aug 15, 2001
priority date (Note) -
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Abstract
A random number generator includes a first oscillator that provides a first oscillatory signal to a processor, and a second oscillator that provides a signal to a frequency multiplier, which in turn provides a second oscillatory signal to the processor. The relative jitter between the two oscillatory signals contains a calculable amount of entropy that is extracted by the processor to produce a sequence of true random numbers.
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