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Network based temporary trust extension to a remote or mobile device enabled via specialized cloud services

  • US 9,230,085 B1
  • Filed: 07/29/2014
  • Issued: 01/05/2016
  • Est. Priority Date: 07/29/2014
  • Status: Active Grant
First Claim
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1. A method of executing a trusted application on a trusted security zone enabled electronic device, comprising:

  • examining a provisioning status of a trusted security subzone on the electronic device;

    responsive to a trusted security subzone not being provisioned on the electronic device, generating, by a server, a temporary trust token;

    transmitting the temporary trust token to the electronic device;

    comparing the temporary trust token with a plurality of trust tokens stored in the electronic device to determine the trustworthiness of the temporary trust token;

    responsive to the temporary trust token being determined to be trustworthy, provisioning the non-provisioned trusted security subzone on the electronic device to be a temporary trust enablement;

    transmitting the trusted application through an encrypted channel to the temporary trust enablement;

    executing the trusted application in the temporary trust enablement, wherein the temporary trust enablement selectively blocks at least part of a processor of the electronic device to execute the trusted application, and wherein the trusted application has restricted access to a subset of application programming interfaces and hardware peripherals of the electronic device;

    releasing the at least part of the processor when the trusted application is completed; and

    removing the trusted application, the temporary trust enablement, and the temporary trust token when the trusted application is completed.

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