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System and method for digital user authentication

  • US 9,282,085 B2
  • Filed: 12/20/2011
  • Issued: 03/08/2016
  • Est. Priority Date: 12/20/2010
  • Status: Active Grant
First Claim
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1. A method of digital user authentication comprising:

  • receiving a request at a server from a private key module associated with a first user device;

    directing a request for a user challenge from the server to a second user device, wherein the second user device is a smartphone or a tablet, wherein successful completion of the user challenge is required to access a first portion of a private key; and

    in response to a successful user challenge completed on the second user device, creating at least a second portion of a digital signature associated with a second portion of the private key at the server to authenticate the user to a third party.

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