×

Encryption and authentication systems and methods

  • US 8,417,956 B2
  • Filed: 08/22/2011
  • Issued: 04/09/2013
  • Est. Priority Date: 03/05/2001
  • Status: Active Grant
First Claim
Patent Images

1. A method comprising:

  • receiving user authenticating information for applying a digital signature stamp of a user to contents of an electronic document;

    receiving a selection of a region defined by the user, the region overlapping at least some contents of the electronic document for application of the digital signature stamp;

    computing, by a computing system comprising computer hardware, a digital signature based on a user key and the contents of the electronic document, excluding the selected region from said computing; and

    embedding within the contents of the electronic document, in the selected region, the digital signature stamp comprising a graphical display of digits corresponding to the computed digital signature.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×