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Trusted security zone watermark

  • US 9,104,840 B1
  • Filed: 03/05/2013
  • Issued: 08/11/2015
  • Est. Priority Date: 03/05/2013
  • Status: Active Grant
First Claim
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1. A method for creating a trusted security zone watermark during the start-up procedure of a mobile device comprising:

  • operating a mobile device comprising a trusted security zone;

    opening a start-up application executed in the trusted security zone;

    capturing an image using the mobile device while executing the start-up application;

    storing the image in the trusted security zone, wherein access to the trusted security zone is restricted to the start-up application and to one or more secure applications;

    designating the image as a watermark for the mobile device;

    in response to a user accessing ay secure application of the one or more secure applications configured to execute in the trusted security zone, presenting, by the mobile device, the watermark, wherein the presentation of the watermark verifies to the user that the secure application is being executed in the trusted security zone of the mobile device, and wherein the same watermark is presented regardless of which secure application of the one or more secure applications is accessed by the user; and

    prompting the user for confirmation that the watermark is present and correct before allowing the secure application to access trusted information in the trusted security zone.

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