System and method for secure three-party communications

  • US 7,181,017 B1
  • Filed: 03/25/2002
  • Issued: 02/20/2007
  • Est. Priority Date: 03/23/2001
  • Status: Active Grant
First Claim
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1. A method for processing information, comprising the steps of:

  • receiving information to be processed;

    defining a cryptographic comprehension function for the information, adapted for making at least a portion of the information incomprehensible;

    receiving asymmetric cryptographic key information, comprising at least asymmetric encryption key information and asymmetric decryption key information;

    negotiating a new cryptographic comprehension function between two parties to a communication using an intermediary;

    processing the information to invert the cryptographic comprehension function and impose the new cryptographic comprehension function in an integral process, in dependence on at least the asymmetric cryptographic key information, without providing the intermediary with sufficient asymmetric cryptographic key information to decrypt the processed information; and

    outputting processed information,wherein the ability of the asymmetric decryption key information to decrypt the processed information changes dynamically.

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