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Securing multifactor authentication

  • US 9,639,825 B1
  • Filed: 06/14/2011
  • Issued: 05/02/2017
  • Est. Priority Date: 06/14/2011
  • Status: Active Grant
First Claim
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1. A system comprising:

  • one or more memories that store an image comprising an optical machine-readable representation of a challenge code; and

    one or more processing units cause the system to;

    receive a request sent by a computing system to authorize an operation, the request received over a first channel, the computing system having a seed;

    provide to the computing system information configured to cause the computing system to display the image and to allow a communications device to capture a challenge code from the image, the image comprising the optical machine-readable representation of the challenge code that can be extracted from the image by the communications device, the communications device including a networking interface for communicating with the system over a second channel; and

    receive, from the communications device, a response authorizing the operation, the response calculated using the challenge code captured by the communications device and the seed, the response received over the second channel distinct from the first channel.

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