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Method and system for electronically signing and processing digital documents

  • US 20030078880A1
  • Filed: 11/19/2002
  • Published: 04/24/2003
  • Est. Priority Date: 10/08/1999
  • Status: Abandoned Application
First Claim
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1. A method for electronically signing a digital data file, comprising:

  • a) embedding in a first digital data file, at a document preparation terminal, at least one information block associated with at least one signing constraint, to form a second digital data file;

    b) transmitting over a first computer network said second digital data file to a document signing terminal;

    c) receiving by said document signing terminal a request from a user of said document signing terminal to electronically sign said second digital data file, said user of said document signing terminal having at least one associated digital private key;

    d) determining, at said document signing computer, whether said at least one signing constraint is satisfied;

    e) electronically signing said second digital data file using at least said digital private key associated with said user of said document signing terminal if the result of said step d) is that said at least one signing constraint is satisfied, thereby forming a third digital data file; and

    f) transmitting said third digital data file over a second computer network from said signing terminal to a central digital file server for storage.

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