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Electronic signature addition method, electronic signature verification method, and system and computer program product using these methods

  • US 5,915,024 A
  • Filed: 06/17/1997
  • Issued: 06/22/1999
  • Est. Priority Date: 06/18/1996
  • Status: Expired due to Term
First Claim
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1. A method of adding an electronic signature to document data, comprising the steps of:

  • dividing the document data into a plurality of divided document data using as a delimiter a predetermined character appearing in a document represented by the document data;

    generating an electronic signature for each of the divided document data on the basis of the divided document data; and

    storing the divided document data, the electronic signature based on the divided document data, and information for associating the divided document data with the electronic signature.

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