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Pseudorandom number generator

  • US 6,044,388 A
  • Filed: 05/15/1997
  • Issued: 03/28/2000
  • Est. Priority Date: 05/15/1997
  • Status: Expired due to Term
First Claim
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1. A method for pseudorandomly generating numbers capable of use in a cryptographic system, comprising the steps of:

  • storing a nonrepeating current time-dependent value;

    storing a current secret value;

    generating an updated secret value as a function of said current secret value and other information;

    replacing said current secret value with said updated secret value, said updated secret value becoming a new current secret value; and

    generating a pseudorandom number as a one-way function of said current time-dependent value and said current secret value.

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