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Method and apparatus for encryption, decryption and authentication using dynamical systems

  • US 5,365,589 A
  • Filed: 02/07/1992
  • Issued: 11/15/1994
  • Est. Priority Date: 02/07/1992
  • Status: Expired due to Term
First Claim
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1. A method for encrypting information comprising the steps of:

  • establishing a plurality of dynamical systems to be used as keys for encryption;

    selecting from said plurality of dynamical systems a plurality of current-key dynamical systems to be used as current keys for encryption;

    choosing at least one of said current-key dynamical system, the chosen dynamical system being an irreversible dynamical system;

    defining a current state of at least one of the current-key dynamical systems in correspondence with at least a portion of an information stream to be encrypted; and

    applying said at least one of said current-key dynamical systems over a selected number of iteration cycles to produce from said current state a new state of said at least one of said current-key dynamical systems, said new state representing an encryption of the information.

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