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Self-authenticating negotiable documents

  • US 6,170,744 B1
  • Filed: 09/24/1998
  • Issued: 01/09/2001
  • Est. Priority Date: 09/24/1998
  • Status: Expired due to Term
First Claim
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1. A method of providing a self-authenticating negotiable document, the method comprising the steps of:

  • a) receiving, by a single entity, data to be included on the negotiable document;

    b) signing, by the single entity, the negotiable document with a digital signature key;

    c) providing, by the single entity, an authenticating data value by computing a one-way hash value from the data and the digital signature; and

    d) outputting, by the single entity, a data packet that includes the authenticating data value, wherein the data packet is used to provide data for creating a self-authentication symbol for the negotiable document.

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