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Method and apparatus for generating secure random numbers using chaos

  • US 5,007,087 A
  • Filed: 04/16/1990
  • Issued: 04/09/1991
  • Est. Priority Date: 04/16/1990
  • Status: Expired due to Term
First Claim
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1. A method for generating a random number from a circuit, said circuit exhibiting a positive Lyaponov exponent and characterizable by an invariant probability distribution, said method comprising:

  • operating said circuit with said positive Lyapunov exponent such that operation is chaotic; and

    after an interval, extracting a value of a state of said circuit at selected intervals as a random number sequence, said intervals selected to have a specified degree of uncertainty.

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